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您的检索式：作者名="Tohyama Takami"
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| 1 | Induced Order in Nonequivalent Two-Leg Hubbard Ladder显示文摘 | Hiroyuki Yoshizumi Takami Tohyama and Takao Morinari | | eprint0，，： | 1 |
| 2 | Band topologies of hexaborides CaB6 and EuB6显示文摘In last decades,topological materials[1-3]have attracted lots of research interest.Topological Kondo insulator(TKI)[4],as an exotic quantum state,has been proposed theoretically in two hexaborides Sm B6and Yb B6,in which there is a d/f(p)band inversion at momentum point X[5].There are lots of experimental work supporting the TKI state and metallic surface state in typical Kondo insulator Sm B6[6-10].However,more and more experimental results demonstrated that Yb B6is trivial insulator at ambient pressure[11].Under high pressure,the band gap of Yb B6will close and the d/p band inversion can happen under pressure about 15 GPa[12]. | Zhi Li Shu-Yu Ning HaiBin Su Toshiaki Iitaka XinYu Yang Jiu-Xing Zhang Tohyama Takami | 2017 | Science China(Physics,Mechanics & Astronomy)2017，60，1： | 0 |
| 3 | Optical detection of quantum geometric tensor in intrinsic semiconductors显示文摘Quantum geometric tensor, including a symmetric real part defined as quantum metric and an antisymmetric part defined as Berry curvature, is essential for understanding many phenomena. In this study, we investigated the photogalvanic efect of semiconductors with time-reversal-invariant and spatial inversion symmetries using the quantum kinetic equation. We concluded that the integral of the symmetric(antisymmetric) part of quantum geometric tensor on the equal energy surface in momentum space, satisfying the resonance condition, is related to the generation rate of carriers in semiconductors under linearly(circularly) polarized light. Under additional bias voltage, the dc photocurrent is proportional to the bias voltage. Our study provided an alternative interpretation for the photogalvanic efect in the view of quantum geometric tensor. Additionally, it classified the intrinsic diference between linearly and circularly polarized optical fields. | Zhi Li Shengli Zhang Takami Tohyama Xiufeng Song Yu Gu Toshiaki Iitaka Haibin Su Haibo Zeng | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，10： | 0 |
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