Imaging phase separation near the mott boundary of the correlated organic superconductors κ-(BEDT-TTF)2X

T. Sasaki; N. Yoneyama; N. Kobayashi; Y. Ikemoto; H. Kimura

doi:10.1103/PhysRevLett.92.227001

Imaging phase separation near the mott boundary of the correlated organic superconductors κ-(BEDT-TTF)₂X

T. Sasaki, N. Yoneyama, N. Kobayashi, Y. Ikemoto, H. Kimura

Institute for Materials Research (IMR) (institute affiliation only)

Research output: Contribution to journal › Article › peer-review

55 Citations (Scopus)

Abstract

The organic Mott system of correlated organic superconductors κ-(BEDT-TTF)₂X were analyzed using scanning microregion infrared spectroscopy. It was observed that phase separation occurred below critical end temperature 35-40 K of first-order Mott transition. The multiple potential minima of free energy was required in phase separation and the domain grew from nucleation point which should be specific in free energy variation in space. The results show that macroscopic size of domains indicated different class of inhomogeneity from inorganic Mott systems such as high-T_c copper and manganese oxides.

Original language	English
Article number	227001
Pages (from-to)	227001-1-227001-4
Journal	Physical review letters
Volume	92
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.92.227001
Publication status	Published - 2004 Jul 4

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.92.227001

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title = "Imaging phase separation near the mott boundary of the correlated organic superconductors κ-(BEDT-TTF)2X",

abstract = "The organic Mott system of correlated organic superconductors κ-(BEDT-TTF)2X were analyzed using scanning microregion infrared spectroscopy. It was observed that phase separation occurred below critical end temperature 35-40 K of first-order Mott transition. The multiple potential minima of free energy was required in phase separation and the domain grew from nucleation point which should be specific in free energy variation in space. The results show that macroscopic size of domains indicated different class of inhomogeneity from inorganic Mott systems such as high-Tc copper and manganese oxides.",

author = "T. Sasaki and N. Yoneyama and N. Kobayashi and Y. Ikemoto and H. Kimura",

note = "Funding Information: We are grateful to T. Hirono and T. Kawase for their technical support. SR experiments were performed at SPring-8 with the approval of JASRI (2003A0075-NS1-np and 2003B0114-NSb-np). This work was partly supported by a Grant-in-Aid for Scientific Research (C) (Grant No. 15540329) from JSPS.",

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doi = "10.1103/PhysRevLett.92.227001",

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T1 - Imaging phase separation near the mott boundary of the correlated organic superconductors κ-(BEDT-TTF)2X

AU - Sasaki, T.

AU - Yoneyama, N.

AU - Kobayashi, N.

AU - Ikemoto, Y.

AU - Kimura, H.

N1 - Funding Information: We are grateful to T. Hirono and T. Kawase for their technical support. SR experiments were performed at SPring-8 with the approval of JASRI (2003A0075-NS1-np and 2003B0114-NSb-np). This work was partly supported by a Grant-in-Aid for Scientific Research (C) (Grant No. 15540329) from JSPS.

PY - 2004/7/4

Y1 - 2004/7/4

N2 - The organic Mott system of correlated organic superconductors κ-(BEDT-TTF)2X were analyzed using scanning microregion infrared spectroscopy. It was observed that phase separation occurred below critical end temperature 35-40 K of first-order Mott transition. The multiple potential minima of free energy was required in phase separation and the domain grew from nucleation point which should be specific in free energy variation in space. The results show that macroscopic size of domains indicated different class of inhomogeneity from inorganic Mott systems such as high-Tc copper and manganese oxides.

AB - The organic Mott system of correlated organic superconductors κ-(BEDT-TTF)2X were analyzed using scanning microregion infrared spectroscopy. It was observed that phase separation occurred below critical end temperature 35-40 K of first-order Mott transition. The multiple potential minima of free energy was required in phase separation and the domain grew from nucleation point which should be specific in free energy variation in space. The results show that macroscopic size of domains indicated different class of inhomogeneity from inorganic Mott systems such as high-Tc copper and manganese oxides.

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Imaging phase separation near the mott boundary of the correlated organic superconductors κ-(BEDT-TTF)₂X

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