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15 papers · 2 filters
Mott Transition in a Valence Bond Solid Insulator with a Triangular Lattice
Yasuhiro Shimizu, Hikota Akimoto, Hiroyuki Tsujii +2
We have investigated the Mott transition in a quasi-two-dimensional Mott insulator EtMeP[Pd(dmit)] with a spin-frustrated triangular lattice in hydrostatic pressure and…
Sr(Ba)VO under pressure -- an orbital switch and potential superconductor
R. Arita, A. Yamasaki, K. Held +2
We study Sr(Ba)VO under high pressure by means of the local density approximation + dynamical mean field theory method. While SrVO is a 1/6-filling three-band s…
31P-NMR and muSR Studies of Filled Skutterudite Compound SmFe4P12: Evidence for Heavy Fermion Behavior with Ferromagnetic Ground State
Kenichi Hachitani, Hideto Fukazawa, Yoh Kohori +6
The 31P-NMR (nuclear magnetic resonance) and muSR (muon spin relaxation) measurements on the filled skutterudite system SmFe4P12 have been carried out. The temperature T dependence…
CoO2-Layer-Thickness Dependence of Magnetic Properties and Possible Two Different Superconducting States in NaxCoO2.yH2O
Masahito Mochizuki, Masao Ogata
In order to understand the experimentally proposed phase diagrams of NaxCoO2.yH2O, we theoretically study the CoO2-layer-thickness dependence of magnetic and superconducting (SC) p…
A unified origin for the 3D magnetism and superconductivity in NaCoO
Kazuhiko Kuroki, Shuhei Ohkubo, Takumi Nojima +3
We analyze the origin of the three dimensional (3D) magnetism observed in nonhydrated Na-rich NaCoO within an itinerant spin picture using a 3D Hubbard model. The origin is…
Appearance of Successive Phase Transition in SmRu4P12 under High Magnetic Fields Probed by 31P Nuclear Magnetic Resonance
Kenichi Hachitani, Hideaki Amanuma, Hideto Fukazawa +5
The 31P-NMR (nuclear magnetic resonance) measurements of the filled skutterudite SmRu4P12 have been carried out in several applied magnetic fields. The line width of the 31P-NMR sp…