Selected Publications (Since 2005)

Kagome metals

• Origin of switchable quasiparticle-interference chirality in loop-current phase of kagome metals measured by scanning-tunneling-microscopy, S. Nakazawa, R. Tazai, Y. Yamakawa, S. Onari, and H. Kontani, Nature Communications 16, 9545 (2025).(Press Release)
• Quantum Metric–Induced Giant and Reversible Nonreciprocal Transport Phenomena in Chiral Loop-Current Phases of Kagome Metals, R. Tazai, Y. Yamakawa, T. Morimoto, and H. Kontani, Proc. Natl. Acad. Sci. U.S.A 122, e2503645122 (2025). (Press Release) (日刊工業新聞)
• Drastic magnetic-field-induced chiral current order and emergent current-bond-field interplay in kagome metals, R. Tazai, Y. Yamakawa, and H. Kontani, Proc. Natl. Acad. Sci. USA 121, e2303476121 (2024).(Press Release)(JST Science Japan)
• Charge-loop current order and Z₃ nematicity mediated by bond order fluctuations in kagome metals, R. Tazai, Y. Yamakawa, and H. Kontani, Nature Communications 14, 7845 (2023).(Press Release)
• Mechanism of exotic density-wave and beyond-Migdal unconventional superconductivity in kagome metal AV₃Sb₅ (A = K, Rb, Cs), R. Tazai, Y. Yamakawa, S. Onari, and H. Kontani, Science Advances 8, eabl4108 (2022).(Press Release)

Fe-based superconductors, Nickelates, Cuprates

• Unified Mechanism of Charge-Density-Wave and High-T_c Superconductivity Protected from Oxygen Vacancies in Bilayer Nickelates, D. Inoue, Y. Yamakawa, S. Onari, and H. Kontani, Commun Phys 8, 115 (2026). (Press Release)
• Discovery of mesoscopic nematicity wave in iron-based superconductors, T. Shimojima, Y. Motoyui, T. Taniuchi, C. Bareille, S. Onari, H. Kontani, M. Nakajima, S. Kasahara, T. Shibauchi, Y. Matsuda, and S. Shin, Science 373, 1122 (2021). (Press Release)
• Nematicity and Magnetism in FeSe and Other Families of Fe-Based Superconductors, Youichi Yamakawa, Seiichiro Onari, and Hiroshi Kontani, Phys. Rev. X 6, 021032 (2016).
• Sign-Reversing Orbital Polarization in the Nematic Phase of FeSe due to the C2 Symmetry Breaking in the Self-Energy, Seiichiro Onari, Youichi Yamakawa, and Hiroshi Kontani, Phys. Rev. Lett. 116, 227001 (2016).
• Spin-Fluctuation-Driven Nematic Charge-Density Wave in Cuprate Superconductors: Impact of Aslamazov-Larkin Vertex Corrections, Youichi Yamakawa and Hiroshi Kontani, Phys. Rev. Lett. 114, 257001 (2015).
• Linear Response Theory for Shear Modulus C₆₆ and Raman Quadrupole Susceptibility: Evidence for Nematic Orbital Fluctuations in Fe-based Superconductors, Hiroshi Kontani and Youichi Yamakawa, Phys. Rev. Lett. 113, 047001 (2014).
• Orbital-Fluctuation-Mediated Superconductivity in Iron Pnictides: Analysis of the Five-Orbital Hubbard-Holstein Model, H Kontani, S Onari, Physical Review Letters 104 (15), 157001 (2010).

Dirac electrons, organic metals, graphene

• Compensated Ferrimagnets with Colossal Spin Splitting in Organic Compounds, T Kawamura, K Yoshimi, K Hashimoto, A Kobayashi, and T Misawa, Phys. Rev. Lett. 132, 156502 (2024).(Press Release)
• Correlation-driven electronic nematicity in the Dirac semimetal BaNiS₂, C. J. Butler, Y. Kohsaka, Y. Yamakawa, M. S. Bahramy, S. Onari, H. Kontani, T. Hanaguri, and S. Shamoto, Proc. Natl. Acad. Sci. U.S.A. 119, e2212730119 (2022). (Press Release)
• SU(4) Valley+Spin Fluctuation Interference Mechanism for Nematic Order in Magic-Angle Twisted Bilayer Graphene: The Impact of Vertex Corrections, S. Onari and H. Kontani, Phys. Rev. Lett. 128, 066401 (2022).(Press Release)
• Chiral Excitonic Instability of Two-Dimensional Tilted Dirac Cones, D. Ohki, M. Hirata, T. Tani, K. Kanoda, and A. Kobayashi, Phys. Rev. Research 2, 033479 (2020).
• Anomalous spin correlations and excitonic instability of interacting 2D Weyl fermions, M. Hirata, K. Ishikawa, G. Matsuno, A. Kobayashi, K. Miyagawa, M. Tamura, C. Berthier, K. Kanoda, Science 358, 1403-1406 (2017).
• Electric Conductivity of the Zero-Gap Semiconducting State in α-(BEDT-TTF)₂I₃ Salt, S. Katayama, A. Kobayashi, and Y. Suzumura, J. Phys. Soc. Jpn. 75, 023708 (2006).

Quantum transport

• Intrinsic spin Hall effect and orbital Hall effect in and transition metals, T. Tanaka, H. Kontani, M. Naito, T. Naito, D.S. Hirashima, K. Yamada, J. Inoue, Physical Review B 77, 165117 (2008).
• Giant orbital Hall effect in transition metals: Origin of large spin and anomalous Hall effects, H. Kontani, T. Tanaka, D.S. Hirashima, K. Yamada, J. Inoue, Physical Review Letters 102, 016601 (2009).

Review articles

• Unconventional density waves and superconductivities in Fe-based superconductors and other strongly correlated electron systems, H. Kontani, R. Tazai, Y. Yamakawa, and S. Onari, Advances in Physics 70, 355 (2021).