Faculty Profiles - KONTANI, Hiroshi

Papers - KONTANI, Hiroshi

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Momentum-dependent sign inversion of orbital order in superconducting FeSe Open Access

Suzuki Y., Shimojima T., Sonobe T., Nakamura A., Sakano M., Tsuji H., Omachi J., Yoshioka K., Kuwata-Gonokami M., Watashige T., Kobayashi R., Kasahara S., Shibauchi T., Matsuda Y., Yamakawa Y., Kontani H., Ishizaka K.

PHYSICAL REVIEW B Vol. 92 ( 20 ) 2015.11

Revisiting orbital-fluctuation-mediated superconductivity in LiFeAs: Nontrivial spin-orbit interaction effects on the band structure and superconducting gap function Open Access

Saito Tetsuro, Yamakawa Youichi, Onari Seiichiro, Kontani Hiroshi

PHYSICAL REVIEW B Vol. 92 ( 13 ) 2015.10

$p$-orbital density wave with $d$ symmetry in high-$T_c$ cuprate superconductors predicted by the renormalization-group + constrained RPA theory Reviewed

Masahisa Tsuchiizu, Youichi Yamakawa, Hiroshi Kontani

Physical Review B Vol. 93 page： 155148 2015.7

Quasiparticle Interference in Fe-based Superconductors Based on a Five-Orbital Tight-Binding Model Reviewed Open Access

Youichi Yamakawa, Hiroshi Kontani

Physical Review B Vol. 92 page： 045124 2015.6

Spin-Fluctuation-Driven Nematic Charge-Density Wave in Cuprate Superconductors: Impact of Aslamazov-Larkin Vertex Corrections Open Access

Youichi Yamakawa and Hiroshi Kontani

Physical Review Letters Vol. 114 ( 25 ) page： 257001 2015.6

Spin-triplet superconductivity in Sr2RuO4 due to orbital and spin fluctuations: Analyses by two-dimensional renormalization group theory and self-consistent vertex-correction method Open Access

Masahisa Tsuchiizu, Youichi Yamakawa, Seiichiro Onari, Yusuke Ohno, and Hiroshi Kontani

Physical Review B Vol. 91 ( 15 ) page： 2015 2015.4

Quantum critical behavior in heavily doped LaFeAsO$_{1-x}$H$_x$ pnictide superconductors analyzed using nuclear magnetic resonance Open Access

R. Sakurai, N. Fujiwara, N. Kawaguchi, Y. Yamakawa, H. Kontani, S. Iimura, S. Matsuishi, H. Hosono

Physical Review B Vol. 91 ( 6 ) page： 064509 2015.2

Orbital plus Spin Multimode Fluctuation Theory in Iron-based Superconductors

Onari Seiichiro, Kontani Hiroshi

IRON-BASED SUPERCONDUCTIVITY Vol. 211 page： 331-376 2015

Anisotropy of the superconducting gap in the iron-based superconductor BaFe2(As1-xPx)(2) Open Access

Yoshida T., Ideta S., Shimojima T., Malaeb W., Shinada K., Suzuki H., Nishi I., Fujimori A., Ishizaka K., Shin S., Nakashima Y., Anzai H., Arita M., Ino A., Namatame H., Taniguchi M., Kumigashira H., Ono K., Kasahara S., Shibauchi T., Terashima T., Matsuda Y., Nakajima M., Uchida S., Tomioka Y., Ito T., Kihou K., Lee C. H., Iyo A., Eisaki H., Ikeda H., Arita R., Saito T., Onari S., Kontani H.

SCIENTIFIC REPORTS Vol. 4 2014.12

Linear Response Theory for Shear Modulus $C_{66}$ and Raman Quadrupole Susceptibility: Significant Evidence for Orbital Nematic Fluctuations in Fe-Based Superconductors Open Access

Hiroshi Kontani, and Youichi Yamakawa

Phys. Rev. Lett. Vol. 113 ( 4 ) page： 047001 (5p) 2014.7

Reproduction of experimental gap structure in LiFeAs based on orbital-spin fluctuation theory: s(++)-wave, s(+/-)-wave, and hole-s(+/-)-wave states

Saito Tetsuro, Onari Seiichiro, Yamakawa Youichi, Kontani Hiroshi, Borisenko Sergey V., Zabolotnyy Volodymyr B.

PHYSICAL REVIEW B Vol. 90 ( 3 ) 2014.7

High-Tc Superconductivity near the Anion Height Instability in Fe-Based Superconductors Open Access

Seiichiro Onari, Youichi Yamakawa, and Hiroshi Kontani

Phys. Rev. Lett. Vol. 112 ( 18 ) page： 187001 (5p) 2014.5

NMR Study on a Pnictide Superconductor LaFeAsO1-x H (x) in a H-Overdoped Regime: Revival of Antiferromagnetic Fluctuations

Fujiwara N., Iimura S., Matsuishi S., Hosono H., Yamakawa Y., Kontani H.

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM Vol. 27 ( 4 ) page： 933-936 2014.4

Microstructural Analysis of Low-cycle Fatigue Damage Process of Sn-Ag-Cu Solder Joint

Kontani Hiroyuki, Kariya Yoshiharu, Fumikura Tomoya

PROCEEDINGS OF THE ASME INTERNATIONAL TECHNICAL CONFERENCE AND EXHIBITION ON PACKAGING AND INTEGRATION OF ELECTRONIC AND PHOTONIC MICROSYSTEMS, 2013, VOL 1 2014

Infrared anomalous Hall effect in CaxSr1-xRuO3 films

Kim M. -H., Tanaka T., Ellis C. T., Mukherjee A., Acbas G., Ohkubo I., Christen H., Mandrus D., Kontani H., Cerne J.

PHYSICAL REVIEW B Vol. 88 ( 15 ) 2013.10

Orbital Nematic Instability in Two-Orbital Hubbard Model: Renormalization-Group + Constrained RPA Analysis Reviewed

Yusuke Ohno, Masahisa Tsuchiizu, Seiichiro Onari, Hiroshi Kontani

Physical Review Letters Vol. 111 page： 057003 2013.9

Language：English Publishing type：Research paper (scientific journal)

Motivated by the nematic electronic fluid phase in Sr_{3}Ru_{2}O_{7}, we develop a combined scheme of the renormalization-group method and the random-phase-approximation-type method, and analyze orbital susceptibilities of the (d_{xz},d_{yz})-orbital Hubbard model with high accuracy. It is confirmed that the present model exhibits a ferro-orbital instability near the magnetic or superconducting quantum criticality, due to the Aslamazov-Larkin-type vertex corrections. This mechanism of orbital nematic order presents a natural explanation for the nematic order in Sr_{3}Ru_{2}O_{7}, and is expected to be realized in various multiorbital systems, such as Fe-based superconductors.

Zigzag Chain Structure Transition and Orbital Fluctuations in Ni-Based Superconductors Open Access

Yamakawa Youichi, Onari Seiichiro, Kontani Hiroshi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 82 ( 9 ) 2013.9

Detection of antiferromagnetic ordering in heavily doped LaFeAsO1-xHx pnictide superconductors using nuclear-magnetic-resonance techniques Open Access

N. Fujiwara, S. Tsutsumi, S. Iimura, S. Matsuishi, H. Hosono, Y. Yamakawa, and H. Kontani

Phys. Rev. Lett. Vol. 111 ( 9 ) page： 097002 (4p) 2013.8

Orbital Nematic Instability in Two-Orbital Hubbard Model: Renormalization-Group + Constrained RPA Analysis Open Access

Masahisa Tsuchiizu, Yusuke Ohno, Seiichiro Onari, Hiroshi Kontani

Physical Review Letters Vol. 111 ( 5 ) page： 057003 2013.7

Phase diagram and superconducting states in LaFeAsO1-xHx based on the multiorbital extended Hubbard model Open Access

Yamakawa Y., Onari S., Kontani H., Fujiwara N., Iimura S., Hosono H.

PHYSICAL REVIEW B Vol. 88 ( 4 ) 2013.7

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Papers - KONTANI, Hiroshi