18 citations · 45 across the 7 of their papers we have counts for
8 papers
Unique Charge-density-wave Order and Fluctuation-induced Phonon Softening in the Optimally-doped Trilayer Cuprate BiSrCaCuO
S. Nakata, K. Yamamoto, J. Okamoto +11
Charge-density-wave (CDW) order is a ubiquitous feature of cuprate superconductors that competes with superconductivity. However, its behavior remains poorly understood in trilayer…
Out-of-phase Plasmon Excitations in the Trilayer Cuprate BiSrCaCuO
S. Nakata, M. Bejas, J. Okamoto +14
Within a homologous series of cuprate superconductors, variations in the stacking of CuO layers influence the collective charge dynamics through the long-range Coulomb interact…
Spectroscopic investigations on trivalent ruthenium ions in ruthenium perovskite oxide thin films
S. Nakata, R. Takahashi, R. Matsumoto +6
The electron configurations under the crystal field, spin-orbit coupling, and Coulomb interaction give rise to a plethora of profound ground states. Ruthenium perovskite oxid…
Lattice constants and magnetism of L10-ordered FePt under high pressure
S. Sawada, K. Okai, H. Fukui +10
We studied the relationship between the lattice constant and magnetism of L10-ordered FePt under high pressure by means of first-principles calculations and synchrotron x-ray measu…
Spin-charge coupling and decoupling in perovskite-type iron oxides (SrBa)LaFeO
Masaho Onose, Hidefumi Takahashi, Takashi Saito +10
The perovskite-type iron oxide SrLaFeO is known to show characteristic spin-charge ordering (SCO), where sixfold collinear spin ordering and threefold charge or…
Optically-induced magnetization switching in NiCo2O4 thin films using ultrafast lasers
Ryunosuke Takahashi, Takuo Ohkochi, Daisuke Kan +2
Recently, all-optical magnetization control has been garnering considerable attention in realizing next-generation ultrafast magnetic information devices. Here, employing a magneto…
Ultrafast demagnetization in NiCo2O4 thin films probed by time-resolved microscopy
Ryunosuke Takahashi, Yoshiki Tani, Hirotaka Abe +5
Using a time-resolved magneto-optical Kerr effect (TR-MOKE) microscope, we observed ultrafast demagnetization of inverse-spinel-type NiCo2O4 (NCO) epitaxial thin films of the inver…
Nature of low-temperature dense ice up to 80 GPa observed by x-ray diffraction
Hiroshi Fukui, Hirokazu Kadobayashi, Hirotaka Abe +3
We have measured the lattice volume of ice VIII in different pressure-temperature pathways and found isothermal compression at low-temperature conditions makes the volume larger. I…