Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-12-06
Physics
Condensed Matter
Strongly Correlated Electrons
5 pages, 5 figures, to appear in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.75.014525
The magnetic field-induced superconductor-insulator-metal transition (SIMT) in partially deuterated $\kappa$-(BEDT-TTF)$_2$Cu[N(CN)$_2$]Br, which is just on the Mott boundary, has been observed using the infrared magneto-optical imaging spectroscopy. The infrared reflectivity image on the sample surface revealed that the metallic (or superconducting) and insulating phases coexist and they have different magnetic field dependences. One of the magnetic field dependence is SIMT that appeared on part of the sample surface. The SIMT was concluded to originate from the balance of the inhomogenity in the sample itself and the disorder of the ethylene end groups resulting from fast cooling.
Im Hojun
Ito Takahiro
Kanoda Kazushi
Kawamoto Atsushi
Kimura Shin-ichi
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