Koji Horiba

National Institutes for Quantum Science and Technology — Japan

Materials Science · Physical Sciences

43h-index7.6kcitations407works2.02yr avg
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Research Topics

Electronic and Structural Properties of Oxides(118), Magnetic and transport properties of perovskites and related materials(94), Advanced Condensed Matter Physics(75), Topological Materials and Phenomena(39), Electron and X-Ray Spectroscopy Techniques(37)

Publications407 total

Spin-degenerate bulk bands and topological surface states associated with Dirac nodal lines in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>RuO</mml:mi> <mml:mn>2</mml:mn> </mml:msub> </mml:math>
Physical review. B./Physical review. B·2026· 2 citedOpen Access
Arbitrary polarization control with a segmented APPLE-II undulator
Journal of Synchrotron Radiation·2025Open Access
Space Charge Layer Evolution in All-Solid-State Batteries Probed via Operando Kelvin Probe Force Microscopy and Nuclear Reaction Analysis
ACS Nano·2025Open Access
Interface-induced collective phase transition in VO2-based bilayers studied by layer selective spectroscopy
Scientific Reports·2025Open Access
Direct observation of band structure modifications from monolayer WSe2 to Janus WSSe
arXiv (Cornell University)·2025Open Access
Spectroscopic Evidence for Electron-Boson Coupling in Half-metallic CrO2
arXiv (Cornell University)·2025Open Access
Introduction of the new synchrotron radiation facility NanoTerasu and its applications to nanomaterials
2025
Unveiling two-dimensional electron systems on ultra-wide bandgap semiconductor $\mathrmβ$-Ga$_2$O$_3$
arXiv (Cornell University)·2025Open Access
Construction of a beamline-crossing sample transfer system for surface science
Journal of Physics Conference Series·2025Open Access
BL13U of NanoTerasu: a beamline for soft and tender X-ray absorption spectroscopy with versatile photon polarization
Journal of Physics Conference Series·2025· 1 citedOpen Access
Status of RIXS Beamline BL02U at NanoTerasu
Journal of Physics Conference Series·2025· 1 citedOpen Access
Spin-valley coupling enhanced high-TC ferromagnetism in a non-van der Waals monolayer Cr2Se3 on graphene
Nature Communications·2025· 4 citedOpen Access
Electronic Structure Dimensionality of the Quantum-Critical Ferromagnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>YbNi</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">P</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>
Physical Review Letters·2025Open Access
Universal Waterfall Feature in Cuprate Superconductors: Evidence of a Momentum-Driven Crossover
Physical Review Letters·2025· 4 citedOpen Access
Ferromagnetism triggered by band tripling in ruthenate <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Sr</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi>Ru</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>10</mml:mn></mml:msub></mml:mrow></mml:math>
Physical review. B./Physical review. B·2024
Evolution of band structure in the kagome superconductor <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mtext>Cs(V</mml:mtext><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mtext>Cr</mml:mtext><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mrow><mml:mo>)</mml:mo></mml:mrow><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mtext>Sb</mml:mtext><mml:mn>5</mml:mn></mml:msub></mml:mrow></mml:math>: Toward universal understanding of charge density wave and superconducting phase diagrams
Physical review. B./Physical review. B·2024· 3 cited
Universal role of combined symmetry for the protection of the Dirac cone in antiferromagnetic topological insulators
Physical review. B./Physical review. B·2024· 2 cited
Dynamics of Hopping of Surface Trapped Electrons on GaN High Electron Mobility Transistors Observed by Operando X-ray Photoelectron Nanospectroscopy
2024
Evolution of Band Structure in a Kagome Superconductor Cs(V1-xCrx)3Sb5: Toward Universal Understanding of CDW and Superconducting Phase Diagrams
arXiv (Cornell University)·2024Open Access
Universal Role of Combined Symmetry for the Protection of the Dirac Cone in Antiferromagnetic Topological Insulators
arXiv (Cornell University)·2024Open Access
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Frequent Co-authors

Hiroshi Kumigashira(25), M. Oshima(12), Shik Shin(11), M. Taguchi(9), A. Chainani(9), Y. Takata(9), Yoshinori Nishino(9), Kenji Tamasaku(9), Keisuke Kobayashi(9), Tetsuya Ishikawa(9), D. Miwa(8), Makina Yabashi(8), K. Yoshimatsu(7), Yasunori Senba(7), Masaharu Matsunami(7), Mikk Lippmaa(6), Hideomi Koinuma(6), Haruhiko Ohashi(6), Yoshihisa Harada(5), S. Souma(5)