Kobayashi, Koji (Physicist)

Publication List

　　statistics (by Google Scholar)

Giant antisymmetric magnetoresistance arising across optically controlled domain walls in the magnetic Weyl semimetal Co₃Sn₂S₂

Kohei Fujiwara, Kazuma Ogawa, Naotaka Yoshikawa, Koji Kobayashi, Kentaro Nomura, Ryo Shimano, and Atsushi Tsukazaki

Commun. Mater. 5, 239

[journal article] (open access)
Topological Spin-Orbit Torque in Ferrimagnetic Weyl Semimetal

Tomonari Meguro, Akihiro Ozawa, Koji Kobayashi, Yasufumi Araki, and Kentaro Nomura

arXiv:2409.07106

[free preprint] [mobile friendly]
Interactions between atomic-scale skyrmions in 2D chiral magnets

Mai Kameda, Koji Kobayashi, and Yuki Kawaguchi

arXiv:2311.17310

[free preprint] [mobile friendly]
Effective Tight-Binding Model of Compensated Ferrimagnetic Weyl Semimetal with Spontaneous Orbital Magnetization

Tomonari Meguro, Akihiro Ozawa, Koji Kobayashi, and Kentaro Nomura

J. Phys. Soc. Jpn. 93, 034703 (2024)

DOI: 10.7566/JPSJ.93.034703

[journal article] [free preprint] [mobile friendly]
Effective model analysis of intrinsic spin Hall effect with magnetism in stacked-kagome Weyl semimetal Co₃Sn₂S₂

Akihiro Ozawa, Koji Kobayashi, and Kentaro Nomura

Phys. Rev. Applied 21, 014041 (2024)

DOI: 10.1103/PhysRevApplied.21.014041

[journal article] [free preprint] [mobile friendly]
Magnetic orderings from spin-orbit coupled electrons on kagome lattice

Jin Watanabe, Yasufumi Araki, Koji Kobayashi, Akihiro Ozawa, and Kentaro Nomura

J. Phys. Soc. Jpn. 91, 083702 (2022)

[journal article] [free preprint] [mobile friendly]

Editors' Choice, JPS Hot Topics
Wannier-based implementation of the coherent potential approximation with applications to Fe-based transition metal alloys

Naohiro Ito, Takuya Nomoto, Koji Kobayashi, Sergey Mankovsky, Kentaro Nomura, Ryotaro Arita, Hubert Ebert, and Takashi Koretsune

Phys. Rev. B 105, 125136 (2022)

DOI: 10.1103/PhysRevB.105.125136

[journal article] [free preprint]
Intrinsic and extrinsic anomalous Hall effects in disordered magnetic Weyl semimetal

Koji Kobayashi and K. Nomura

J. Phys. Soc. Jpn. 91, 013703 (2022)

DOI: 10.7566/JPSJ.91.013703

[journal article (open access)] [free preprint]
Quantum Hall effect induced by chiral Landau levels in topological semimetal films

D.-H.-Minh Nguyen, Koji Kobayashi, Jan-Erik R. Wichmann, and Kentaro Nomura

Phys. Rev. B 104, 045302 (2021)

DOI: 10.1103/PhysRevB.104.045302

[journal article] [free preprint]
Ferromagnetic-electrodes-induced Hall effect in topological Dirac semimetals

K. Kobayashi and K. Nomura

Phys. Rev. Res. 3, 033023 (2021)

DOI: 10.1103/PhysRevResearch.3.033023

[journal article] [free preprint]
Ballistic transport in disordered Dirac and Weyl semimetals

K. Kobayashi, M. Wada, and T. Ohtsuki

Phys. Rev. Res. 2, 022061(R) (2020)

DOI: 10.1103/PhysRevResearch.2.022061

[journal article] [free preprint]
Robust magnetotransport in disordered ferromagnetic kagome layers with quantum anomalous Hall effect

K. Kobayashi, M. Takagaki, and K. Nomura

Phys. Rev. B 100, 161301(R) (2019)

DOI: 10.1103/PhysRevB.100.161301

[journal article] [free preprint]
Topological Matter in the Absence of Translational Invariance

Koji Kobayashi, Tomi Ohtsuki, Ken‐Ichiro Imura

"Advanced Topological Insulators" (Scrivener Publishing), Chapter 4, pp. 109-157 (2019)

ISBN: 9781119407317, DOI: 10.1002/9781119407317

[book chapter]
Helicity-protected domain-wall magnetoresistance in ferromagnetic Weyl semimetal

K. Kobayashi,Y. Ominato, K. Nomura

J. Phys. Soc. Jpn. 87, 073707 (2018)

DOI: 10.7566/JPSJ.87.073707

[journal article] [free preprint]
Anisotropic magnetotransport in Dirac-Weyl magnetic junctions

Y. Ominato, K. Kobayashi, K. Nomura

Phys. Rev. B 95, 085308 (2017)

DOI: 10.1103/PhysRevB.95.085308

[journal article] [free preprint]
Comparative study of Weyl semimetal, topological and Chern insulators: thin-film point of view

Y. Yoshimura, W. Onishi, K. Kobayashi, T. Ohtsuki, K.-I. Imura

Phys. Rev. B 94, 235414 (2016)

DOI: 10.1103/PhysRevB.94.235414

[journal article] [free preprint]
Engineering Dirac electrons emergent on the surface of a topological insulator

Y. Yoshimura, K. Kobayashi, T. Ohtsuki, K.-I. Imura

Sci. Technol. Adv. Mater. 16, 014403 (2015)

DOI: 10.1088/1468-6996/16/1/014403

[journal article] [free preprint]
Modification and Control of Topological Insulator Surface States Using Surface Disorder

V. Sacksteder, T. Ohtsuki, K. Kobayashi

Phys. Rev. Applied 3, 064006 (2015)

DOI: 10.1103/PhysRevApplied.3.064006

[journal article] [free preprint]

Editor's suggestion
Dimensional crossover of transport characteristics in topological insulator nanofilms

K. Kobayashi, K.-I. Imura, Y. Yoshimura, T. Ohtsuki

Phys. Rev. B 92, 235407 (2015)

DOI: 10.1103/PhysRevB.92.235407

[journal article] [free preprint]

Cited by: 31 (2015.11.3 Google Citations)
Highly cited article (Web of Science 2015)
Density of States Scaling at the Semimetal to Metal Transition in Three Dimensional Topological Insulators

K. Kobayashi, T. Ohtsuki, K.-I. Imura, I. F. Herbut

Phys. Rev. Lett. 112, 016402 (2014)

DOI: 10.1103/PhysRevLett.112.016402

[journal article] [free preprint]
Disordered strong and weak topological insulators

K. Kobayashi, T. Ohtsuki, K.-I. Imura

Phys. Rev. Lett. 110, 236803 (2013)

DOI: 10.1103/PhysRevLett.110.236803

[journal article] [free preprint]
Critical exponent for the quantum spin Hall transition in Z₂ network model

K. Kobayashi, T. Ohtsuki, K. Slevin

International Journal of Modern Physics: Conference Series 11 (2012) 114-119

DOI: 10.1142/S2010194512005995

[journal article] [free preprint]
Universality classes and the Anderson transition in two dimensions

T. Ohtsuki, K. Kobayashi, and K. Slevin

Soryushiron kenkyu 10 (2011)

[journal article] [PDF]
Conductance distributions in disordered quantum spin-Hall systems

K. Kobayashi, T. Ohtsuki, H. Obuse, K. Slevin

Phys. Rev. B (2010) 165301

DOI: 10.1103/PhysRevB.82.165301

[journal article] [free preprint]
Point-Contact Conductance in Asymmetric Chalker-Coddington Network Model

K. Kobayashi, T. Ohtsuki, K. Slevin

J. Phys. Soc. Jpn. 78 (2009) 084708

DOI: 10.1143/JPSJ.78.084708

[journal article] [free preprint]
Transport properties in network models with perfectly conducting channels

K. Kobayashi, K. Hirose, H. Obuse, T. Ohtsuki, K. Slevin

J. Phys.: Conf. Ser. 150 (2009) 022041

DOI: 10.1088/1742-6596/150/2/022041

[journal article] [free preprint]

Publication List

Giant antisymmetric magnetoresistance arising across optically controlled domain walls in the magnetic Weyl semimetal Co3Sn2S2

Topological Spin-Orbit Torque in Ferrimagnetic Weyl Semimetal

Interactions between atomic-scale skyrmions in 2D chiral magnets

Effective Tight-Binding Model of Compensated Ferrimagnetic Weyl Semimetal with Spontaneous Orbital Magnetization

Effective model analysis of intrinsic spin Hall effect with magnetism in stacked-kagome Weyl semimetal Co3Sn2S2

Magnetic orderings from spin-orbit coupled electrons on kagome lattice

Wannier-based implementation of the coherent potential approximation with applications to Fe-based transition metal alloys

Intrinsic and extrinsic anomalous Hall effects in disordered magnetic Weyl semimetal

Quantum Hall effect induced by chiral Landau levels in topological semimetal films

Ferromagnetic-electrodes-induced Hall effect in topological Dirac semimetals

Ballistic transport in disordered Dirac and Weyl semimetals

Robust magnetotransport in disordered ferromagnetic kagome layers with quantum anomalous Hall effect

Topological Matter in the Absence of Translational Invariance

Helicity-protected domain-wall magnetoresistance in ferromagnetic Weyl semimetal

Anisotropic magnetotransport in Dirac-Weyl magnetic junctions

Comparative study of Weyl semimetal, topological and Chern insulators: thin-film point of view

Engineering Dirac electrons emergent on the surface of a topological insulator

Modification and Control of Topological Insulator Surface States Using Surface Disorder

Dimensional crossover of transport characteristics in topological insulator nanofilms

Density of States Scaling at the Semimetal to Metal Transition in Three Dimensional Topological Insulators

Disordered strong and weak topological insulators

Critical exponent for the quantum spin Hall transition in Z2 network model

Universality classes and the Anderson transition in two dimensions

Conductance distributions in disordered quantum spin-Hall systems

Point-Contact Conductance in Asymmetric Chalker-Coddington Network Model

Transport properties in network models with perfectly conducting channels

Giant antisymmetric magnetoresistance arising across optically controlled domain walls in the magnetic Weyl semimetal Co₃Sn₂S₂

Effective model analysis of intrinsic spin Hall effect with magnetism in stacked-kagome Weyl semimetal Co₃Sn₂S₂

Critical exponent for the quantum spin Hall transition in Z₂ network model