Faculty Profiles - KONTANI, Hiroshi

Papers - KONTANI, Hiroshi

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

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

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

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

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)

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

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

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

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

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

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

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

PHYSICAL REVIEW B Vol. 88 ( 4 ) 2013.7

Nodal gap structure in Fe-based superconductors due to the competition between orbital and spin fluctuations

Saito Tetsuro, Onari Seiichiro, Kontani Hiroshi

PHYSICAL REVIEW B Vol. 88 ( 4 ) 2013.7

Effect of realistic finite-size impurities on T-c in Fe-based superconductors based on the five-orbital tight-binding model

Yamakawa Youichi, Onari Seiichiro, Kontani Hiroshi

PHYSICAL REVIEW B Vol. 87 ( 19 ) 2013.5

Spin-Fluctuation-Driven Orbital Nematic Order in Ru-Oxides: Self-Consistent Vertex Correction Analysis for Two-Orbital Model

Ohno Yusuke, Tsuchiizu Masahisa, Onari Seiichiro, Kontani Hiroshi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 82 ( 1 ) 2013.1

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Papers - KONTANI, Hiroshi