469 citations · 3.1k across the 37 of their papers we have counts for
37 papers
Higher harmonic resistance oscillations in micro-bridge superconducting Nb ring
Masashi Tokuda, Ryoya Nakamura, Masaki Maeda +1
We studied resistance oscillations in two types of superconducting mesoscopic Nb rings. In a simple superconducting ring device, a resistance oscillation with a period of the quant…
Thickness-induced crossover from strong to weak collective pinning in exfoliated FeTeSe thin films at 1 T
Ryoya Nakamura, Masashi Tokuda, Mori Watanabe +3
We studied flux pinning in exfoliated FeTeSe thin-film devices with a thickness from 30 to 150 nm by measuring the critical current density . In…
Negative correlation between the linear and the nonlinear conductance in magnetic tunnel junctions
Shuichi Iwakiri, Satoshi Sugimoto, Yasuhiro Niimi +4
The current-voltage () characteristics beyond the linear response regime of magnetic tunnel junction (MTJ) is systematically investigated. We find a clear negative correlation…
Itinerant ferromagnetism mediated by giant spin polarization of metallic ligand band in van der Waals magnet Fe5GeTe2
K. Yamagami, Y. Fujisawa, B. Driesen +15
We investigate near-Fermi-energy (EF) element-specific electronic and spin states of ferromagnetic van der Waals (vdW) metal Fe5GeTe2. The soft x-ray angle-resolved photoemission s…
Spin treacle in a frustrated magnet observed with spin current
Hiroki Taniguchi, Mori Watanabe, Takashi Ibe +8
By means of spin current, the flow of spin angular momentum, we find a regime of "spin treacle" in a frustrated magnetic system. To establish its existence, we have performed spin…
Negative resistance state in superconducting NbSe induced by surface acoustic waves
Masahiko Yokoi, Satoshi Fujiwara, Tomoya Kawamura +5
We report a negative resistance, namely, a voltage drop along the opposite direction of a current flow, in the superconducting gap of NbSe thin films under the irradiation of s…