45 citations · 195 across the 7 of their papers we have counts for
7 papers
Van Hove Singularity and Lifshitz Transition in Thickness-Controlled Li-Intercalated Graphene
S. Ichinokura, M. Toyoda, M. Hashizume +8
We demonstrate a new method to control the Fermi level around the van Hove singularity (VHS) in Li-intercalated graphene on the SiC substrate. By angle-resolved photoemission spect…
Scanning tunneling spectroscopy of superconductivity on surfaces of LiTi2O4(111) thin films
Yoshinori Okada, Yasunobu Ando, Ryota Shimizu +4
Unique superconductivity at surfaces/interfaces, as exemplified by LaAlO3/SrTiO3 interfaces, and the high transition temperature in ultrathin FeSe films, have triggered intense deb…
Quasiparticle interference on cubic perovskite oxide surfaces
Yoshinori Okada, Tay-Rong Chang, Guoqing Chang +7
We report the first observation of coherent surface states on cubic perovskite oxide SrVO3(001) thin films through spectroscopic imaging scanning tunneling microscopy. A direct lin…
Atomic-scale visualization of initial growth of homoepitaxial SrTiO3 thin film on an atomically ordered substrate
Ryota Shimizu, Katsuya Iwaya, Takeo Ohsawa +4
The initial homoepitaxial growth of SrTiO3 on a (\surd13\times\surd13) - R33.7°SrTiO3(001) substrate surface, which can be prepared under oxide growth conditions, is atomically res…
Stripe charge ordering in SrO-terminated SrTiO3(001) surfaces
Katsuya Iwaya, Ryota Shimizu, Takeo Ohsawa +2
The local electronic structure of the SrO-terminated SrTiO3(001) surface was explored using scanning tunneling microscopy. At low bias voltages in the empty states, a unidirectiona…
Thickness-dependent Local Surface Electronic Structures of Homoepitaxial SrTiO3 Thin Films
Takeo Ohsawa, Katsuya Iwaya, Ryota Shimizu +2
We have investigated the atomically-resolved substrate and homoepitaxial thin film surfaces of SrTiO3(001) using low-temperature scanning tunneling microscopy/spectroscopy (STM/STS…
Atomically Resolved Surface Structure of SrTiO3(001) Thin Films Grown in Step-Flow Mode by Pulsed Laser Deposition
Katsuya Iwaya, Takeo Ohsawa, Ryota Shimizu +2
The surface structure of SrTiO3(001) thin films homoepitaxially grown by PLD in step-flow mode was characterized using low temperature STM. It was found that one-dimensional (1D) T…