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High-Field ESR Measurements of S=1/2 Kagome Lattice Antiferromagnet BaCuVO(OH)
Wei-min Zhang, Hitoshi Ohta, Susumu Okubo +5
High-field electron spin resonance (ESR) measurements have been performed on vesignieite BaCuVO(OH), which is considered as a nearly ideal model substance of =1/…
Superconducting weak link generated on a linear array of substrate steps in ultrathin films of YBa2Cu3O7-x
A. Tsurumaki, Z. Hiroi
We have studied a three-unit-cell-thick YBa2Cu3O7-x (YBCO) superconducting film grown on a slightly vicinal SrTiO3 substrate that was polished from the (001) plane by a small miscu…
Observation of Magnetic Monopoles in Spin Ice
Hiroaki Kadowaki, Naohiro Doi, Yuji Aoki +5
Excitations from a strongly frustrated system, the kagome ice state of the spin ice Dy2Ti2O7 under magnetic fields along a [111] direction, have been studied. They are theoreticall…
Glassy Spin Freezing and Gapless Spin Dynamics in a Spatially Anisotropic Triangular Antiferromagnet Ag2MnO2
S. Ji, J. -H. Kim, Y. Qiu +6
Using elastic and inelastic neutron scattering techniques, we show that upon cooling a spatially anisotropic triangular antiferromagnet AgMnO freezes below K…
Rattling-Induced Superconductiviy in the Beta-Pyrochlore Oxides AOs2O6
Yohei Nagao, Jun-ichi Yamaura, Hiroki Ogusu +2
The superconducting properties of two beta-pyrochlore oxides, CsOs2O6 and RbOs2O6, are studied by thermodynamic and transport measurements using high-quality single crystals. It is…
Phase Diagram and Spin Dynamics in Volborthite with a Distorted Kagome Lattice
M. Yoshida, M. Takigawa, H. Yoshida +2
We report 51V-NMR study on a high-quality powder sample of volborthite Cu3V2O7(OH)2/2H2O, a spin-1/2 Heisenberg antiferromagnet on a distorted kagome lattice formed by isosceles tr…