138 citations · 491 across the 18 of their papers we have counts for
4 papers · 1 filter
Observation of electronic bound states in charge-ordered YBaCuO
R. Zhou, M. Hirata, T. Wu +11
Observing how electronic states in solids react to a local symmetry breaking provides insight into their microscopic nature. A striking example is the formation of bound states whe…
Spin excitations in the quasi-two-dimensional charge-ordered insulator -(BEDT-TTF)I probed via C NMR
Kyohei Ishikawa, Michihiro Hirata, Dong Liu +3
The spin excitations from the nonmagnetic charge-ordered insulating state of -(BEDT-TTF)I at ambient pressure have been investigated by probing the static and low-freque…
Observation of an anisotropic Dirac cone reshaping and ferrimagnetic spin polarization in an organic conductor
Michihiro Hirata, Kyohei Ishikawa, Kazuya Miyagawa +6
The Coulomb interaction among massless Dirac fermions in graphene is unscreened around the isotropic Dirac points, causing a logarithmic velocity renormalization and a cone reshapi…
Cu-NMR study of oxygen disorder in ortho-II YBa2Cu3Oy
T. Wu, R. Zhou, M. Hirata +12
We show that 63Cu NMR spectra place strong constraints on both the nature and the concentration of oxygen defects in ortho-II YBa2Cu3Oy. Systematic deviation from ideal ortho-II or…