45 citations · 217 across the 11 of their papers we have counts for
11 papers
Hydrogen (deuterium) dynamics and thermal stability in ion-irradiated platinum-hydride thin films synthesized at low temperature
S. S. Das, T. Ozawa, Y. Komatsu +3
Hydrogen (H) and deuterium (D) interactions with transition metals play a central role in heterogeneous catalysis and hydrogen-related technologies. While H-Pt surface interactions…
Born-Qualified: An Autonomous Framework for Deploying Advanced Energy and Electronic Materials
Steven R. Spurgeon, Milad Abolhasani, Frederick Baddour +28
Autonomous science is transforming how we discover materials and chemical systems for advanced energy technologies. However, many initially promising systems never reach deployment…
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…
STM Studies of Isolated Mn12-Ph Single Molecule Magnets
Kelley Reaves, Kyongwan Kim, Katsuya Iwaya +5
We study Mn12O12(C6H5COO)16(H2O)4 (Mn12-Ph) single-molecule magnets on highly ordered pyrolytic graphite (HOPG) using low temperature scanning tunneling microscopy (LT-STM) experim…
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…
Valence evaluation of LiMnO2 and related battery materials by x-ray absorption spectroscopy
H. Wadati, D. G. Hawthorn, T. Z. Regier +5
We present an x-ray absorption study of the oxidation states of transition-metal-ions of LiMnO2 and its related materials, widely used as cathodes in Li-ion batteries. The comparis…
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…