Ryuta Yagi 詳細情報
論文
Under Review
Ryoya Ebisuoka1, Takushi Oka1, Shingo Tajima1, Taiki Hirahara1, Tomoaki
Nakasuga1, Kenji Watanabe2, Takashi Taniguchi2, and Ryuta Yagi1 Magnetic
xxxxxxxxxxxxxxxxxxxxxx in Moiré Superlattice of h-BN-bilayer Graphene
Heterostructures, submitted, (Under Review). Comming Soon. Preprint is available if requested.
Published & Accepted
( * stands for papers written by other group)
[R64] Fumiya Mukai, Kota Horii, Nazuna Hata, Ryoya Ebisuoka, Kenji Watanabe,
Takashi Taniguchi and Ryuta Yagi,
On dielectric screening
in twisted double bilayer graphene
J. Phys. Soc. Jpn. 90, 1024702 (2021). Papers of Editors Choice.
[R63] Fumiya Mukai, Kota Horii, Ryoya Ebisuoka, Kenji Watanabe, Takashi
Taniguchi, Ryuta Yagi
Unconventional satellite resistance peaks in moiré superlattice of h-BN/
AB-stacked tetralayer-graphene heterostructure
Commun. Phys. 4, 109 (2021).
[R62] Tomoaki Nakasuga, Taiki Hirahara, Kota Horii, Ryoya Ebisuoka, Shingo
Tajima, Kenji Watanabe, Takashi Taniguchi, and Ryuta Yagi
Phys. Rev. B 101, 035419 (2020).
[R61] Shingo Tajima, Ryoya Ebisuoka, Kenji Watanabe, Takashi Taniguchi
and Ryuta Yagi Multiband ballistic transport and anisotropic commensurability magnetoresistance
in antidot lattices of AB-stacked trilayer graphene, .J.
Phys. Soc. Jpn 89, 044703 (2020). DOI:10.7566/JPSJ.89.04470
[R60] Kota Horii, Tomoaki Nakasuga, Taiki Hirahara, Shingo Tajima, Ryoya Ebisuoka,
Kenji Watanabe, Takashi Taniguchi, and Ryuta Yagi,
[R59] Tomoaki Nakasuga1, Shingo Tajima1, Taiki Hirahara1, Ryoya Ebisuoka1,
Takushi Oka1, Kenji Watanabe2, Takashi Taniguchi2 and Ryuta Yagi1*"Low energy band structure in Bernal stacked hexlayer graphene: Landau
fan diagram and resistance ridge ",
Phys. Rev. B 99, 085404 (2019).
DOI: 10.1103/PhysRevB.99.085404.
[R58] Takushi Oka, Shingo Tajima, Ryoya Ebisuoka, Taiki
Hirahara, Kenji Watanabe, Takashi Taniguchi, and Ryuta Yagi, Ballistic transport
experiment detects Fermi surface anisotropy of graphene,
Phys. Rev. B 99, 035440 (2019).
DOI: 10.1103/PhysRevB.99.035440.
[R57] Taiki Hirahara, Ryoya Ebisuoka, Takushi Oka, Tomoaki Nakasuga, Shingo
Tajima, Kenji Watanabe, Takashi Taniguchi and Ryuta Yagi,
Multilayer graphene shows intrinsic resistance peaks in the carrier density
dependence. Sci. Rep. 8 13992 (2018). DOI: 10.1038/s41598-018-32214-7
[R56] Ryuta Yagi, Taiki Hirahara, Ryoya Ebisuoka, Tomoaki Nakasuga,
Shingo Tajima, Kenji Watanabe, and Takashi Taniguchi ,
"Low-energy band structure and even-odd layer number effect
in AB-stacked multilayer graphene", Sci. Rep. 8 13018 (2018). DOI:10.1038/s41598-018-31291-y
[R55] T. Hirahara, R. Ebisuoka, K. Watanabe, T. Taniguchi and R. Yagi,
"Magnetoresistance measurements of tetralayer graphene device with
single gate electrode",J. Phys. Conf. Ser. 969, 012150 (2018). DOI
:10.1088/1742-6596/969/1/012150
[R54] R. Yagi, R. Sakakibara, R. Ebisuoka, J. Onishi, K. Watanabe,
T. Taniguchi and Y. Iye,
“Ballistic transport in graphene antidot lattices”, Phys. Rev. B
92, 195406 (2015).DOI:
10.1103/PhysRevB.92.195406
[R53] R. Yagi and A. Endo,
“Electric Transport of Graphene Subjected to Modulated Structures” J.
Phys. Soc. Jpn 84, 212008 1-9 (2015). -----invited review-------DOI:10.7566/JPSJ.84.121008
[R52] Seiya Fukada, Yumi Shintani, Midori Shimomura, Fumiya Tahara and
Ryuta Yagi,
“Graphene made by mechanical exfoliation of graphite intercalation
compound”, Jpn. J. Appl. Phys. 51, 085101 (2012).DOI:
10.1143/JJAP.51.085101
[R51] Ryuta Yagi, Midori Shimomura, Fumiya Tahara, Hiroaki Kobara, and
Seiya Fukada,
“Observing Altshuler-Aronov-Spivak (AAS) oscillation in a hexagonal antidot
array of monolayer graphene”
[R50] Kazuki Tsuboi and Ryuta Yagi,
"Effect of magnetic field on charge imbalance relaxation of Non-Equilibrium
superconductivity", Physica C 470, S877-S878 (2010).DOI:
10.1016/j.physc.2009.11.088
[R49] . Ryuta Yagi, Seiya Fukada, Hiroaki Kobara, Yumi Shintani, Norio
Ogita and Masayuki Udagawa,
"Magnetoresistance oscillation at charge neutrality point in monolayer
graphene due to potential fluctuation"
[R48] Ryuta Yagi, Seiya Fukada, Hiroaki Kobara, Norio Ogita and
Masayuki Udagawa,
"Negtive magnetoresistance due to charge fluctuation in mono-layer
graphene in magnetic field",
[R47] Kazuki Tsuboi and Ryuta Yagi,
"Charge Imbalance Relaxation Due to Pair Breaking Perturbation by
magnetic field.", J. Phys. Soc. Jpn. 79, 013704 (2010).DOI:
10.1143/JPSJ.79.013704
[R46] R. Yagi, K. Tsuboi, R. Morimoto, T. Matsumura H. Kobara,
"Study of Quasi-Particle Recombination Rate by Injection Experiment
Using Narrow Superconducting Wire and dc-SQUID Junctions, J. Phys. Soc.
Jpn. 78, 54704 (2009). DOI: 10.1143/JPSJ.78.054704
[R45] R. Yagi, K. Utsunomiya, K. Tsuboi, T. Kubota, Y. Terao
and Y. Ikebuchi, “Tunneling Measurements of charge imbalance of non-equilibrium
superconductors”, Controlable Quantum States, pp.3-8, World Scientific,
Singapore, 2008.
[R44] K. Utsunomiya, K. Tsuboi, T. Kubota and R. Yagi, “Josephson
Junction with Tunable Damping using Quasi-particle Injection”, Controlable
Quantum States, pp.59-64, World Scientific, Singapore, 2008.
[R43] R. Yagi, "Observation of Charge Imbalance in Voltage Biased Superconductor-Insulator-Normal
Tunnel Junctions"
[R42] K. Utsunomiya and R. Yagi, “Control of Profile of Josephoson Junction
by Quasi-Particle Injection“,
[R41] H. Sera, Y. Ikebuchi and R. Yagi, “Observation of Non-Equilibrium
Superconductivity Using DC-SQUID”,
[R40] Kubota and R. Yagi,
“Fabrication of Cr/CrOx/Cr SET Transistors”, Physica B, 383, 57-58 (2006).DOI:
10.1016/j.physb.2006.03.055
[R39] R. Yagi,
“Spatial Decay of Nonequilibrium Quasiparticles in Narrow Superconducting
Wires with Injection”,
AIP Conference Proceedings, 850, 1419-1420 (2006).DOI:10.1063/1.2354922
[R38] Kubota and R. Yagi,
“Fabrication of Cr/CrOx/Cr SET Transistors”, AIP Conference Proceedings,
850, 751-752 (2006).DOI:10.1063/1.2355235
[R37] Y. Ikebuchi and R. Yagi ,
“Bias dependence of charge imbalance effect in superconducting narrow wires
with superconductor/insulator/normal junctions”, Physica E 22 ( 2004)
757-760. DOI: 10.1016/j.physe.2003.12.120
[R36] R. Yagi,
“Quasi Particle Quasi-particle transport in narrow superconducting wires
with superconductor/insulator/normal tunnel junctions”, Superlattices and
Microstructures 34 (2003) 263-269. DOI: 10.1016/j.spmi.2004.03.018
[R35] T. Yamaguchi, R. Yagi, A. Kanda, Y. Ootuka, S. Kobayashi
“Phase diagram for two-dimensional arrays of small Josephson junctions
with shunt resistors” Physica C, 352 (2001) 181-185. DOI: 10.1016/S0921-4534(00)01720-2
[R34] T. Yamaguchi, R. Yagi, A. Kanda, Y. Ootuka, and S. Kobayashi
“Superconductor-insulator transition in a two-dimensional array of resistively
shunted small Josephson junctions”
[R33] R. Yagi, S. Kobayashi, and Y. Ootuka
“Superconductor-Insulator Transition in Single Small Josephson Junction
with Normal Tunneling Junction and with Ohmic Shunt Resistor”, Physica
B 280(2000)416-417.DOI:
10.1016/S0921-4526(99)01797-4
[R32] R. Yagi, S. Kobayashi, and Y. Ootuka:
“Dissipative Phase Transition in Single Small Josephson Junction with
Normal Tunneling Junction”
J. Phys. Soc. Jpn. 68 (1999) 1075-1077. DOI: 10.1143/JPSJ.68.1075
[R31] R. Yagi and S. Kobayashi:
"The Effect of Shunt Resistor on Superconductor-Insulator Transition
in Single Small Josephson Junctions",
[R30] T. Yamaguchi, R. Yagi, S. Kobayashi, and Y. Ootuka:
"Two-Dimensional Arrays of Small Josephson Junctions with Regular
and Random Defects",
J. Phys. Soc. Jpn. 66 (1998) 729-731.DOI:
10.1143/JPSJ.67.729
[R29] R. Yagi and S. Kobayashi:
"Tuning of Superconductor-Insulator Transition in Single Small Josephson
Junctions with Shunt Resistor",
J. Phys. Soc. Jpn. 66( 1997)3360-3362.DOI:
10.1143/JPSJ.66.3360
[R28] R. Yagi and S. Kobayashi:
"Phase Diagram for Superconductor-Insulator Transition in Single
Small Josephson Junction with Shunt Resistor",
J. Phys. Soc. Jpn. 66(1997)3722-3724. DOI:10.1143/JPSJ.66.3722
[R27] H. Kazawa, R. Yagi, K. Ono, Y. Ootuka and S. Kobayashi:
"Chemical Potential Dependence of Resistance of Two-Dimensional Array
of Small Tunnel Junctions",
J. Phys. Soc. Jpn. 66(1997)276-277. DOI: 10.1143/JPSJ.66.276
[R26] R. Yagi, T. Yamaguchi, H. Kazawa and S. Kobayashi:
"Study on Superconductor-Insulator Transition in Two-Dimensional
Arrays of Small Josephson Junctions",
J. Phys. Soc. Jpn. 66 (1997) 2429-2436. DOI: 10.1143/JPSJ.66.2429
[R25] H. Kazawa, R. Yagi, K. Ono, Y. Ootuka and S. Kobayashi:
"Gate Voltage Dependence of Resistance of Two-Dimensional Array of
Small Tunnel Junctions",
Jpn. J. Appl. Phys. 36 (1997) 4020-4021.DOI:
10.1143/JPSJ.66.2429
[R24] R. Yagi, T. Yamaguchi, H. Kazawa, and S. Kobayashi:
"Superconductor-Insulator Transition in Two-Dimensional Network of
Josephson Junctions",
J. Phys. Soc. Jpn. 65(1996)36-38.
DOI: 10.1143/JPSJ.65.36
[R23] R.Yagi, H. Kazawa, T. Yamaguchi, and S. Kobayashi:
"Meausrement of Self Capacitance via Single Electron Tunneling Transistor",
J. Phys. Soc. Jpn. 65(1996)868-869.
DOI:10.1143/JPSJ.65.868
[R22] R. Yagi, T. Yamaguchi, H. Kazawa and S. Kobayashi:
"Capacitance Dependence of Critical Tunneling Resistance for Superconductor-Insulator
Transition in Two-Dimensional Network of Josephson Junctions",
[R21] R. Yagi, T. Yamaguchi, and S. Kobayashi:
"Effect of Finite System Width in Two-Dimensional Network of Small
Tunnel Junctions",
Czech. J. Phys. 46 (1996) 695-696. DOI: 10.1007/BF02583655
[R20] R. Yagi, T. Yamaguchi, H. Kazawa, and S. Kobayashi:
"Phase Diagram for Superconductor-Insulator Transitions in Two-Dimensional
Network of Small Tunnel Junctions",
Czech. J. Phys. 46 (1996) 693-694. DOI: 10.1007/BF02583654
[R19] R. Yagi, T. Yamaguchi, and S. Kobayashi:
"Edge Effect in Two-Dimensional Network of Small Josephson Junctions",
J. Phys. Soc. Jpn. 65 (1996) 2365-2366. DOI: 10.1007/BF02583654
[R18 ] R. Yagi and S. Kobayashi:
"Charge-Vortex Duality Breaking in Small Tunnel Junction with Finite
Width",
J. Phys. Soc. Jpn. 64 (1995) 375-377.DOI:
10.1143/JPSJ.64.375
[R17] T. Uchihashi, R. Yagi and S. Kobayashi:
"Spectroscopy of a Single Superconducting Fine Particle using a Scanning
Tunneling Microscope",
J. Phys. Soc. Jpn. 64 (1995)1059-1062. DOI: 10.1143/JPSJ.64.1059
[R16] R. Yagi and S. Kobayashi:
"Breakdown of Charge-Vortex Duality in Small Tunnel Junction Arrays
with Finite Width",
Jpn. J. Appl. Phys. 34 (1995)4569-4571.DOI:
10.1143/JJAP.34.4569
[R15] Y.Iye, R.Yagi, N.Hanasaki, S.Kagoshima, H.Mori, H.Fujimoto
and G. Saito:
"The Origin of Anomalous Angular Dependent Magnetoresistance Oscillation
Effect in alpha-(BEDT-TTF)2KHg(SCN)4"
J. Phys. Soc. Jpn. 63 (1994 ) 674-684.DOI:
10.1143/JPSJ.63.674
*[R14] T . Kagayama, G. Oomi, R. Yagi, Y. Iye, Y. Onuki and T. Komatsubara:
“Effect of Pressure on the Magnetoresistance of CeInCu2”,
J. Alloy. Compd 207 (1994) 271-274. DOI: 10.1016/0925-8388(94)90219-4
[R13] R. Yagi and Y. Iye:"On the Peak Inversion of The Angular
Dependent Magnetoresistance Oscillation of Cylindrical Fermi Surfaces with
Different Corrugation Symmetries", Solid State Commun. 89(1994)275-281. DOI: 10.1016/0038-1098(94)90697-1
[R12] Y. Iye, R .Yagi, N. Hanasaki, S. Kagoshima, H. Mori, H. Fujimoto
and G. Saito,
“Study of the Angular Dependent Magnetoresistance Oscillations in alpha-(BEDT-TTF)2M(SCN)4
[M:K, NH4]”,
[R11] R.Yagi and Y.Iye:
"Oscillatory Magnetoresistance in Two-Dimensional Electron Systems
in a Periodically Modulated Magnetic Field'',
J. Phys. Soc. Jpn., 62 (1993) 1279-1285. DOI: 10.1143/JPSJ.62.1279
[R10] S. Kagoshima, T. Osada, A. Kawasumi, R. Yagi, N. Miura, M. Oshima
H. Mori, T. Nakamura, and G. Saito,
"Magnetotransport studies of Topology of Fermi Surface of the Quasi
Two-Dimensional Organic Conductors (BEDT-TTF)2KHg(SCN)4 , the Isostructural
Metal (BEDT-TTF)2(NH4)Hg(SCN)4 and the Quasi One-Dimensional Superconductor
(TMTSF)2ClO4", Mechanism of Superconductivity, eds. Y.Muto,
JJAP Series 7 (1992) 381-389.
[R9] R.Yagi and Y.Iye,
"On the Temperature Dependence of Hall Effect in Low Carrier Density Metals'',
J. Phys. Soc. Jpn. 61 (1992) 227-232. DOI: 10.1143/JPSJ.61.227
*[R8] T.Kagayama, G.Oomi, R.Yagi, Y.Iye, Y.Onuki and T.Komatsubara,
" Pressure-Induced Positive Magnetoresistance in the Heavy Fermion
Compound CeInCu2'',
J. Phys. Soc. Jpn. 61 (1992) 2632-2635.DOI:
10.1143/JPSJ.61.2632
[R7] R.Yagi, Y.Iye, T.Osada, and S.Kagoshima,
"Angular Dependent Oscillatory Magnetoresistance in Quasi-Two-Dimensional
Systems'',
[R6] T.Osada, R.Yagi, A.Kawasumi, S.Kagoshima, N.Miura, M.Oshima, H.Mori,
T.Nakamura, and G.Saito:
"Fermiology and unusual high-field magnetotransport in novel organicmetals
(BEDT-TTF)2XHg(SCN)4 (X=K,NH4)'', Synth. Met. 42 (1991) 2171-2174. DOI: 10.1016/0379-6779(91)92044-I
[R5] R.Yagi, Y.Iye, Y.Hashimoto, T.Odagiri, H.Noguchi, H.Sakaki, and T.Ikoma:
"Angular Dependent Magnetoresistance Oscillation in GaAs/AlxGa1-xAs
Superlattice'',
J. Phys. Soc. Jpn. 60(1991) 3784-3791. DOI: 10.1143/JPSJ.60.3784
[R4] R.Yagi, Y.Iye, T.Osada, and S.Kagoshima:
"Semiclassical Interpretation of Angular Dependent Oscillatory Magnetoresistance
in Quasi-Two-Dimensional Systems'', J. Phys. Soc. Jpn. 59 (1990)
3069-3072. DOI: 10.1143/JPSJ.59.3069
[R3] T.Osada, R.Yagi, S.Kagoshima, N.Miura, M.Oshima, and G.Saito:
"High-field Magnetotransport and Fermi-Surface Topology in the Novel
Quasi-Two-Dimensional Organic Conductor bis(ethylenedithiolo)tetrathiafulvalenium
mercuric potassium thiocyanate, (BEDT-TTF)2KHg(SCN)4"
Phys. Rev. B41 (1990) 5428-5431. DOI: 10.1103/PhysRevB.41.5428
[R2] T.Osada, R.Yagi, S.Kagoshima, N.Miura, M.Oshima, and G.Saito:
" High-field Magnetotransport in the Organic Conductor (BEDT-TTF)2KHg(SCN)4''
The Physics and Chemistry of Organic Superconductors, eds. G.Saito and
S.Kagoshima,
(Springer-Verlag,Heidelberg,1990) pp.220-223.
[R1] T.Osada, A.Kawasumi, R.Yagi, S.Kagoshima, N.Miura, M.Oshima, H.Mori,
T.Nakamura, and G.Saito:
"Quantum Oscillations of Magnetoresistance in a New Organic Superconductor
(BEDT-TTF)2(NH4 )Hg(SCN)4''
)892-898.
国際会議発表等
[S40] R. Yagi, R. Sakakibara, R. Ebisuoka, J. Onishi, K. Watanabe,
T. Taniguchi and Y. Iye,
“Commensurability magnetoresistance due to ballistic transport in highmobility
graphene antidot lattices made on h-BN”
33rd International Conference on the Physics of Semiconductors, Beijin,
China, Jul 31- Aug. 5, 2016.
[S39] R. Yagi, R. Sakakibara, R. Ebisuoka, J. Onishi, K. Watanabe, T.
Taniguchi and Y. Iye.
Magneto-transport of high-mobility graphene antidot lattices made on h-BN
– ballistic and phase coherent transport
The 22nd International Conference on High Magnetic Fields in Semiconductor
Physics, Sapporo Japan, Jul 25- 29,2016.
[S38] R. Ebisuoka, S. Uchino, T. Hirahara, J. Onishi, K. Watanabe, T.
Taniguchi and R. Yagi
“Brillouin zone folding and anisotropic ban structure in more superlattices
in bilayer graphene/h-BN heterostructure,
The 22nd International Conference on High Magnetic Fields in Semiconductor
Physics, Sapporo Japan, Jul 25- 29, 2016.
[S37] T. Hirahara, S. Uchino, R. Ebisuoka, J. Onishi, K. Watanabe T. Taniguchi
and R. Yagi
“Magnetotransport study of electronic band structure in tetralayer graphene
using high-mobility graphene fabricated on h-BN”
The 22nd International Conference on High Magnetic Fields in Semiconductor
Physics, Sapporo Japan, Jul 25-29, 2016.
[S36] R. Yagi, M. Shimomura, and S. Fukada
“Graphene made by exfoliation of graphite intercalation compound”
The Sixteenth International Conference on the Science and Application of
Nanotubes, Nagoya, Japan,June 28- July 3, 2015.
[S35] R. Yagi, R, Sakakibara, and R. Ebisuoka
“Quantum Correction to Conductance in Graphene Antidot Lattices”
21st International Conference on Electronic Properties of Two-Dimensional
Systems, Sendai, Japan, Jul 26-31, 2015.
ISAAN
[S34] R. Yagi, R. Sakakibara, R. Ebisuoka, J. Onishi, K. Watanabe,
T. Taniguchi and Y. Iye,
“Ballistic transport in graphene antidot lattices.”
Americal Physical Society March meeting, Baltimore, USA 2016.
[S33] R. Yagi, R. Sakakibara, J. Onishi
Altshuler-Aronov-Spivak Osicllation in Graphene Antidot Lattice
Americal Physical Society March meeting, San Antonio, USA, Mar. 2-6,2015.
[S32] R. Yagi, R. Sakakibara, F. Tahara, J. Onishi, D. Takegawa
Magnetoresistance of thin film devices fabricated from bulk crystal of
Bi2Se3 and Bi2Te3
Americal Physical Society March meeting, Denver, USA, Mar. 3-7, 2014.
[S31] R. Yagi, M. Shimomura, F. Tahara, S. Fukada
“Fabricating graphene from graphite intercalation compounds”
Americal Physical Society March meeting, Baltimore, USA, Mar.18-22, 2013
[S30] R. Yagi, S. Fukada, Y. Shintani,
Fluctuation of magnetoresistance at the minimum conductivity point of
monolayer graphene due to potential fluctuation,
Americal Physical Society March meeting,Portland, USA, Mar. 15-19, 2010.
[S29] Ryuta Yagi, Seiya Fukada, Yumi Shintani
“Magnetic fingerprint of mono-layer graphene”
Recent Advances in Graphene and Related Materials,
Aug, 1-6, 2010, Singapore.
[S28] R. Yagi, S. Fukada, H. Kobara, N. Ogita and M. Udagawa
Negative magnetoresistance due to charge fluctuation in mono-layer graphene
at the minimum conductivity point,
The 18th international conference on electronic property of two dimensional
systems （EP2DS）, July 19-24, 2009 Kobe, Japan.
[S27] R. Yagi,
“Magnetotransport of graphene FET”,
The 4th International Symposium on Atomic Technology, 17-18, Nov,2009,
Maiko, Japan.
[S26] K. Tsuboi and R. Yagi,
“Relaxation of Charge Imbalance in Non-equilibrium Superconductivity Due
to Pair Breaking Perturbation by Magnetic Field”,
9th International Conference on Material and Mechanisms of Superconductivity
(M2S-IX), Tokyo, Japan. Sept 7-12, 2009.
[S25] R. Yagi,
"Physics of small tunnel junctions",
1st HU-SKKU Workshop on Advanced Materials Research, Hiroshima, Japan,
Nov 16-17, 2006.
[S24] K. Utsunomiya, K. Tsuboi, T. Kubota, Y. Terao, Y. Ikebuchi, R. Yagi,
Quasi-Particle Recombination in mesoscopic superconducting wires, Mesoscopic
Superconductivity and Spintronics (MS+S2006), Atsugi (NTT), Japan
Feb. 27-Mar.2, 2006.
[S23] K. Tsuboi, K. Utsunomiya, T. Kubota, Y. Terao, Y. Ikebuchi,
R. Yagi,
Energy Distribution of Quasi-Particle Charge Density in Mesoscopic Superconducting
Wires ,
Mesoscopic Superconductivity and Spintronics (MS+S2006), Atsugi,
Japan, Feb. 27-Mar.2 , 2006.
[S22] K. Utsunomiya and R. Yagi,
Effect of Quasi-particle injection on retrapping current of Josephson junction,
The 3rd Hiroshima Workshop NFM2F. Hiroshima University, Nov. 16-19, 2005.
[S21] T. Kubota and R. Yagi,
Transport property of Cr/CrOx/Cr Single Electron Transistor fabricated using
Plasma Oxidation ,
The 3rd Hiroshima Workshop NFM2F. Hiroshima University, Nov. 16-19, 2005.
[S20] H. Sera, Y. Ikebuchi and R. Yagi,
Observation of Non-Equilibrium Superconductivity Using DC-SQUID,
The 3rd Hiroshima Workshop NFM2F. Hiroshima University, Nov. 16-19, 2005.
[S19] R. Yagi,
Quasi-particle recombination in Narrow Superconducting Wires, 24th International
Conference on Low Temperature Physics, Florida, USA, Aug. 10-17,
2005.
[S18] T. Kubota, R. Yagi,
Fabrication of Cr/CrOx/Cr Small Capacitance Junctions, 24th International
Conference on Low Temperature Physics, Florida, USA, Aug. 10-17,
2005
[S17] R. Yagi,
Non-equilibrium Quasi-Particle Transport in Narrow Superconducting Wires,
Mesoscopic Superconductivity and Spintronics (MS+S 2004), Atsugi
(NTT), Japan, Mar. 1-4 , 2004.
[S16] Y. Ikebuchi and R. Yagi,
The 15th International Conference on Electronic Properties of Two-Dimensional
Systems (EP2DS), Nara, Japan, Jul. 14-18, 2003.
[S15] R. Yagi,
Quasi-Particle Transport in Narrow superconducting wires with superconductor/insulator/normal
tunnel junctions,
NPMS-6 Sixth International Conference on New Phenomena in Mesoscopic Structures
and Fourth International Conference on Surfaces and Interfaces of Mesoscopic
Devices, Hawaii, USA, Dec. 1-5, 2003.
[S14] S. Sakita and R. Yagi,
Resistance Fluctuation in Narrow Ferromagnetic Wires,
International Conference on Low Temperature Physics, Hiroshima, Aug. 12-22, 2002
[S13] R．Yagi, S. Kobayashi and Y. Ootuka, “Superconductor-Insulator Transition
in Single Small Josephson Junction with Normal Tunneling Junction and Ohmic
Shunt Resistor”, 22 th International Conference on Low Temperature Physics
(LT22), Helsinki, Finland, Aug.4-11, 1999 ( invited )
[S12] R. Yagi, S. Kobayashi and Y. Ootuka, “Dependence on Shunt
Resistance and Distance on Single Small Josephson Junctions”, Fourth International
Symposium on New phenomena in Mesoscopic Structures", Hawaii, USA,
Dec. 6-12,1998.
[S11] R. Yagi, S. Kobayashi and Y. Ootuka, “Superconductor-Insulator
Transition in Single Small Josephson Junction with Shunt Resistor”, International
Workshop on Nano-Physics and Electronics, Tokyo, Japan, Sep. 18-20, 1997.
[S10] R. Yagi, S. Kobayashi,“Superconductor-Insulator Transition in Single
Small Josephson Junction with Shunt Resistor”, CMD Condensed Matter Division,
Europian Physical Society, Leuven, Belgium, Aug.18-20, 1997.
[S9] R. Yagi, T. Yamaguchi, H. Kazawa and S. Kobayashi, “Phase Diagram
for Superconductor-Insulator Transitons in Two-Dimensional Network of Small
Tunnel Junctions”, International Conference on Low Temperature Physics
(LT21), Prague, Czech, Aug. 7-15, 1996.
[S8] R. Yagi, T. Yamaguchi, and S. Kobayashi, “Effect of Finite System
Width in Two-Dimensional Network of Small Tunnel Junctions”, International
Conference on Low Temperature Physics (LT21), Prague, Czech, Aug. 7-15,
1996.
[S7] R. Yagi, T. Yamaguchi, H. Kazawa and S. Kobayashi, “Capacitance
Dependence of Critical Tunnelling Resistance for Superconductor-Insulator
Transition in Two-Dimensional Network of Josephson Junctions”, Third International
Symposium on New phenomena in Mesoscopic Structures", Hawaii, USA,
Dec.4-8,1995.
[S6] R. Yagi and S. Kobayashi, “Breakdown of Charge-Vortex Duality
in Small Tunnel Junction Arrays with Finite Width”, International Workshop
on Mesoscopic Physics and Electronics (MPE 95), Tokyo, Japan, Mar. 4-6,
1995.
[S5] Y. Iye, R. Yagi, Y. Hashimoto, and T. Ikoma, “Magnetoresistance in
Modulated Structures”, Second International Symposium on New phenomena
in Mesoscopic Structures, Hawaii, USA, Dec. 1992.
[S4] R. Yagi, Y. Iye, Y. Hashimoto, T. Odagiri, H. Noguchi, H. Sakaki
and T. Ikoma, “Angular Dependent Magnetoresistance Oscillation in GaAs/AlxGa1-xAs
Superlattice”, Electronic Properties of Two-Dimensional Systems (The 9th
international Conference) Nara, Japan, Jul. 8-12, 1991.
[S3] R.Yagi, Y.Iye, T.Osada, and S.Kagoshima, “Angular Dependent
Oscillatory Magnetoresistance in Quasi-Two-Dimensional Systems”, International
Conference on Science and Technology of Synthetic Metals (ICSM 90) Tubingen,
Germany, Sep. 2-7, 1990.[S2] T. Osada, R. Yagi, A. Kawasumi, S. Kagoshima, N. Miura, M. Oshima,
H. Mori, T. Nakamura, and G. Saito, “Fermiology and unusual high-field
magnetotransport in novel organicmetals (BEDT-TTF)2XHg(SCN)4 (X=K,NH4)”,
International Conference on Science and Technology of Synthetic Metals
(ICSM ‘90), Tubingen, Germany, September 2-7, 1990. [S1] T. Osada, R. Yagi, S. Kagoshima, N. Miura, M. Oshima, and G. Saito,
“High Field Magnetotransport in the Organic Conductor (BEDT-TTF)2KHg(SCN)4”,
Physics and Chemistry of Organic Conductors, I.S.S.P. International Symposium,
Tokyo, Japan, Aug. 28-30, 1989.
招待公演
[R9] R. Yagi, New Aspects in Moiré Superlattice of hBN-Graphene Heterostructures,
Japan-Italy Joint Workshop, “Device science of 2D organic and inorganic
materials: from fundamental to applications”, Online, Jul, 5 2021.
[R8] 八木隆多 「多層グラフェンの電子構造」フラーレン・ナノチューブ・グラフェン学会、九州大学 (online). 9/18 (2020)
[R7] 八木隆多 「グラフェンの磁気輸送」
グラフェン・ナノ物理研究会, 秋田大学, 11/12 (2011).
[R6] 八木隆多 「グラフェンの電子輸送」
広島大学、物性セミナー第４００回記念講演会 11/1 (2011).
[R5] R. Yagi, “Magnetotransport of graphene FET”, The 4th International
Symposium on Atomic Technology, 17-18, Nov,2009, Maiko, Japan.
[R5 ]八木隆多 「グラフェンの輸送現象（レビュー）」東京大学物性研究所短期研究会、ディラック電子系の物性―グラフェンおよび関連物質の最近の研究 2009年10/22-10/24.
東京大学（柏キャンパス）
[R4] 八木隆多 「超伝導準粒子注入」 佐々木学術シンポジウム2004年,12/22-23
東京大学（本郷キャンパス）
[R3] 八木隆多 「非平衡超伝導現象」
広島大学・総合科学部・永井研究室セミナー 2004年5月
[R2] R．Yagi, S. Kobayashi and Y. Ootuka, “Superconductor-Insulator Transition
in Single Small Josephson Junction with Normal Tunneling Junction and Ohmic
Shunt Resistor”, 22 th International Conference on Low Temperature Physics
(LT22), Helsinki, Finland, August 4-11, 1999.
[R1] 八木隆多 「微小トンネル接合における量子相転移」
東京大学・物性研究所・今田研究室セミナー東京大学（六本木キャンパス）1999年7月
受賞
JPSJ papers of editor's choice (2021年11月日本物理学会) (On dielectric screening
in twisted biyaler graphene )
井上研究奨励賞 （井上財団 1996年２月) （変調構造下の磁気抵抗振動）
学会、社会貢献活動
2022年～現在 Joural of Physical Society of Japan JPSJ編集委員 Associate Editor
2018年～現在 ＮＥＤＯ 国立研究開発法人 新エネルギー・産業総合開発機構 課題選考書面審査員
Joural of Physical Society of Japan, Associate Editor
2015年 オープンキャンパス講義 未来物質グラフェン
2015年 広島大学理学部 中高生サイエンス大会 コメンテーター
2005年The 3rd Hiroshima Workshop NFM2F. Hiroshima University, Nov. 16-19,
2005, organizing committee.
2000年 低温国際会議(LT23) ポスター賞審査委員
1997-1998 日本物理学会 低温分科世話人
1988 放送大学面接授業（実験補助）