21 citations · 58 across the 13 of their papers we have counts for
13 papers
Control of band structure in the altermagnetic candidate MnTe by temperature and strain
Shin-ichi Kimura, Hironao Suwa, Kangle Yuan +4
The temperature and strain dependences of the optical conductivity spectrum of hexagonal manganese telluride (MnTe) were measured, revealing absorption in the terahertz (THz) regio…
Photo-induced phase transition on black samarium monosulfide
Hiroshi Watanabe, Yusuke Takeno, Yusuke Negoro +14
To investigate the role of the excitons for the origin of the pressure-induced phase transition (BGT) from the black-colored insulator (BI) to the golden-yellow-colored metal (GM)…
Two-dimensional heavy fermion in a monoatomic-layer Kondo lattice YbCu
Takuto Nakamura, Hiroki Sugihara, Yitong Chen +6
The Kondo effect between localized -electrons and conductive carriers leads to exotic physical phenomena. Among them, heavy-fermion (HF) systems, in which massive effective carr…
Current-Induced Metallization and Valence Transition in Black SmS
Shin-ichi Kimura, Hiroshi Watanabe, Shingo Tatsukawa +4
A strongly-correlated insulator, samarium mono-sulfide (SmS), presents not only the pressure-induced insulator-to-metal transition (IMT) with the color change from black to golden-…
Growth of 2D topological material Bi on InSb(111)B with fractal surface structures
Yoshiyuki Ohtsubo, Takuto Nakamura, Shin-ichi Kimura
Bismuth (Bi) atomic layers are known as 2D topological materials with variety of the electronic structures and topological orders depending on the number of stacking layers. Recent…
Surface valence transition in SmS by alkali metal adsorption
Takuto Nakamura, Toru Nakaya, Yoshiyuki Ohtsubo +9
The electronic structure changes of SmS surfaces under potassium (K) doping are elucidated using synchrotron-based core-level photoelectron spectroscopy and angle-resolved photoele…
Breakdown of bulk-projected isotropy in surface electronic states of topological Kondo insulator SmB(001)
Yoshiyuki Ohtsubo, Toru Nakaya, Takuto Nakamura +4
The topology and spin-orbital polarization of two-dimensional (2D) surface electronic states have been extensively studied in this decade. One major interest in them is their close…
Fluctuated spin-orbital texture of Rashba-split surface states in real and reciprocal space
Takuto Nakamura, Yoshiyuki Ohtsubo, Ayumi Harasawa +4
Spin-orbit interaction (SOI) in low-dimensional systems, namely Rashba systems and the edge states of topological materials, is extensively studied in this decade as a promising so…
Optical study on electronic structure of the locally non-centrosymmetric CeRhAs
Shin-ichi Kimura, Jörg Sichelschmidt, Seunghyun Khim
The electronic structures of the heavy-fermion superconductor CeRhAs with the local inversion symmetry breaking and the reference material LaRhAs have been investig…
One-dimensionality of the spin-polarized surface conduction and valence bands of quasi-one-dimensional Bi chains on GaSb(110)-(21)
Yoshiyuki Ohtsubo, Naoki Tokumasu, Hiroshi Watanabe +8
Surface electronic structure and its one-dimensionality above and below the Fermi level () were surveyed on the Bi/GaSb(110)-(21) surface hosting quasi-one-dimen…
Fermi level tuning of one-dimensional giant Rashba system on a semiconductor substrate: Bi/GaSb(110)-(2x1)
Takuto Nakamura, Yoshiyuki Ohtsubo, Naoki Tokumasu +10
We fabricated spin-polarized surface electronic states with tunable Fermi level from semiconductor to low-dimensional metal in the Bi/GaSb(110)-(21) surface using angle-res…
Giant Rashba splitting of quasi-1D surface states on Bi/InAs(110)-(21)
T. Nakamura, Y. Ohtsubo, Y. Yamashita +10
Electronic states on the Bi/InAs(110)-(21) surface and its spin-polarized structure are revealed by angle-resolved photoelectron spectroscopy (ARPES), spin-resolved ARPES,…
Spin-polarized quasi 1D state with finite bandgap on the Bi/InSb(001) surface
J. Kishi, Y. Ohtsubo, T. Nakamura +13
One-dimensional (1D) electronic states were discovered on 1D surface atomic structure of Bi fabricated on semiconductor InSb(001) substrates by angle-resolved photoelectron spectro…