5 citations · 8 across the 4 of their papers we have counts for
4 papers
High mobility holes at germanane/Ge(111) allotropic cross-dimensional heterointerface
Yumiko Katayama, Daiki Kobayashi, Hikaru Okuma +3
Germanane (GeH) is essentially a hydrogen-terminated Ge analog of graphene with a direct gap (~1.6 eV). Record hole mobility mu_h~67,000 cm2/Vs is found at 15 K for a single allotr…
Large Rashba spin-orbit coupling in metallic SrTaO thin films
Hikaru Okuma, Yumiko Katayama, Fukunobu Kadowaki +2
Epitaxial thin films of SrTaO with thickness () smaller than 74 nm were successfully fabricated on an insulator (LaAlO)(SrAlTaO) substrate. Films…
Large Rashba parameter for 4d strongly correlated perovskite oxide SrNbO3 ultrathin films
Hikaru Okuma, Yumiko Katayama, Kazunori Ueno
To elucidate the spin relaxation mechanism of SrNbO3 (SNO) ultrathin films, the transport properties of a series of SNO films with various thicknesses were measured on both sides o…
Transport properties around the metal-insulator transition for SrVO3 ultrathin films fabricated by electrochemical etching
Hikaru Okuma, Yumiko Katayama, Keisuke Otomo +1
By using electrochemical etching, we fabricated conductive ultrathin SrVO3 (SVO) films that exhibited metallic behavior down to 3 monolayers (ML). From an observed systematic chang…