Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2005-01-10
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 3 figures, accepted for publication in Solid State Commun
Scientific paper
10.1016/j.ssc.2005.01.026
The direct observation of the phase separation between the metallic and insulating states of 75 %-deuterated $\kappa$-(ET)$_2$Cu[N(CN)$_2$]Br ($d33$) using infrared magneto-optical imaging spectroscopy is reported, as well as the associated temperature, cooling rate, and magnetic field dependencies of the separation. The distribution of the center of spectral weight ($< \omega >$) of $d33$ did not change under any of the conditions in which data were taken and was wider than that of the non-deuterated material. This result indicates that the inhomogenity of the sample itself is important as part of the origin of the metal - insulator phase separation.
Im Hee-Jung
Ito Tetsuya
Kanoda Kazushi
Kawamoto Atsushi
Kimura Sachie
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