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6 papers · 1 filter
Field-induced carrier delocalization in the strain-induced Mott insulating state of an organic superconductor
Yoshitaka Kawasugi, Hiroshi M. Yamamoto, Naoya Tajima +3
We report the influence of the field effect on the dc resistance and Hall coefficient in the strain-induced Mott insulating state of an organic superconductor -(BEDT-TTF)C…
Suppression of electronic susceptibility in metal-Mott insulator alternating material, (Me-3,5-DIP)[Ni(dmit)2]2
Shigeki Fujiyama, A. Shitade, K. Kanoda +3
Frequency shifts and nuclear relaxations of 13C NMR of the metal-insulator alternating material, (Me-3,5-DIP)[Ni(dmit)2]2, are presented. The NMR absorption lines originating from…
Electronic structures of CeRu ( = Si, Ge) in the paramagnetic phase studied by soft X-ray ARPES and hard X-ray photoelectron spectroscopy
M. Yano, A. Sekiyama, H. Fujiwara +9
Soft and hard X-ray photoelectron spectroscopy (PES) has been performed for one of the heavy fermion system CeRuSi and a -localized ferromagnet CeRuGe in the pa…
Electron Correlation Driven Heavy-Fermion Formation in LiV2O4
P. E. Jönsson, K. Takenaka, S. Niitaka +3
Optical reflectivity measurements were performed on a single crystal of the d-electron heavy-fermion (HF) metal LiV2O4. The results evidence the highly incoherent character of the…
Precise Control of Band Filling in NaxCoO2
Daisuke Yoshizumi, Yuji Muraoka, Yoshihiko Okamoto +5
Electronic properties of the sodium cobaltate NaxCoO2 are systematically studied through a precise control of band filling. Resistivity, magnetic susceptibility and specific heat m…
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…