684 citations · 3.1k across the 32 of their papers we have counts for
12 papers · 1 filter
Epitaxial growth of topological insulator -Ag2Te thin films
Ayuki Takegawa, Kouya Imoto, Minoru Kawamura +2
We report epitaxial growth of -Ag2Te thin films by molecular beam epitaxy. -Ag2Te, recently identified as a topological insulator, was grown by depositing Ag on InP substrate…
Higher-order epitaxy: A pathway to suppressing structural instability and emergent superconductivity
Yuki Sato, Soma Nagahama, Shunsuke Kitou +11
Molecular beam epitaxy enables the growth of thin film materials with novel properties and functionalities. Typically, the lattice constants of films and substrates are designed to…
Quantum geometry in low-energy linear and nonlinear optical responses of magnetic Rashba semiconductor (Ge,Mn)Te
Tsubasa Takagi, Hikaru Watanabe, Ryutaro Yoshimi +7
Quantum geometry appears as a key factor in understanding the optical properties of quantum materials, with the anticipation on diverging or quantized responses near the Dirac and…
Emergence of ferroelectric topological insulator as verified by quantum Hall effect of surface states in (Sn,Pb,In)Te films
Ryutaro Yoshimi, Ryosuke Kurihara, Yoshihiro Okamura +9
Emergent phenomena arising from nontrivial band structures based on topology and symmetry have been attracting keen interest in contemporary condensed-matter physics. Materials suc…
Nonreciprocal electrical transport in multiferroic semiconductor (Ge,Mn)Te
Ryutaro Yoshimi, Minoru Kawamura, Kenji Yasuda +4
We have investigated the nonreciprocal electrical transport, that is a nonlinear resistance effect depending on the current direction, in multiferroic Rashba semiconductor (Ge,Mn)T…
Terahertz lattice and charge dynamics in ferroelectric semiconductor SnPbTe
Y. Okamura, H. Handa, R. Yoshimi +5
The symmetry breaking induced by the ferroelectric transition often triggers the emergence of topological electronic states such as Weyl fermions in ferroelectric-like metals/semim…