285 citations · 2.6k across the 51 of their papers we have counts for
8 papers · 1 filter
Tuning the Parity Mixing of Singlet-Septet Pairing in a Half-Heusler Superconductor
K. Ishihara, T. Takenaka, Y. Miao +12
In superconductors, electrons with spin form Cooper pairs whose spin structure is usually singlet () or triplet (). When the electronic structure near the F…
Quantum spin Hall effect from multi-scale band inversion in twisted bilayer Bi(TeSe)
Ikuma Tateishi, Motoaki Hirayama
Moiré materials have become one of the most active fields in material science in recent years due to their high tunability, and their unique properties emerge from the Moiré-scale…
Field-induced multiple metal-insulator crossovers of correlated Dirac electrons of perovskite CaIrO
R. Yamada, J. Fujioka, M. Kawamura +10
The interplay between electron correlation and topology of relativistic electrons may lead to a new stage of the research on quantum materials and emergent functions. The emergence…
Anisotropic superconductivity in topological crystalline metal PbTaS with multiple Dirac fermions
Xiaohui Yang, Tonghua Yu, Chenchao Xu +10
Topological crystalline metals/semimetals (TCMs) have stimulated a great research interest, which broaden the classification of topological phases and provide a valuable platform t…
Emergence of spin-orbit coupled ferromagnetic surface state derived from Zak phase in a nonmagnetic insulator FeSi
Yusuke Ohtsuka, Naoya Kanazawa, Motoaki Hirayama +13
A chiral compound FeSi is a nonmagnetic narrow-gap insulator, exhibiting peculiar charge and spin dynamics beyond a simple band-structure picture. Those unusual features have been…
Quantum transport observed in films of magnetic topological semimetal EuSb
Mizuki Ohno, Masaki Uchida, Ryosuke Kurihara +10
We report fabrication of EuSb single-crystalline films and investigation of their quantum transport. First-principles calculations demonstrate that EuSb is a magnetic topol…
Absence of conventional room temperature superconductivity at high pressure in carbon doped HS
Tianchun Wang, Motoaki Hirayama, Takuya Nomoto +3
In this work, we show that the same theoretical tools that successfully explain other hydrides systems under pressure seem to be at odds with the recently claimed conventional room…
Multipole representation for anisotropic Coulomb interactions
Shoma Iimura, Motoaki Hirayama, Shintaro Hoshino
Multipole representation is proposed for the anisotropic Coulomb interactions in solids. Any local interactions can be expressed as the product of two multipole operators, and the…