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The origin of the phase separation in partially deuterated $\kappa$-(ET)$_2$Cu[N(CN)$_2$]Br studied by infrared magneto-optical imaging spectroscopy

Authors :
T. Nishi
Hojun Im
Hiromi Taniguchi
Atsushi Kawamoto
Shin-ichi Kimura
Toshihiro Takahashi
Takahiro Ito
Yong Seung Kwon
K. Kanoda
Kazuya Miyagawa
Publication Year :
2005

Abstract

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.<br />Comment: 4 pages, 3 figures, accepted for publication in Solid State Commun

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....078c9b4d2b0305b93c1620b36db08f2d