Spatial mapping of electronic states in κ-(BEDT-TTF) 2X using infrared reflectivity

Takahiko Sasaki; Naoki Yoneyama

doi:10.1088/1468-6996/10/2/024306

Spatial mapping of electronic states in κ-(BEDT-TTF) ₂X using infrared reflectivity

Takahiko Sasaki, Naoki Yoneyama

IMR - Materials Property Division

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

12 Citations (Scopus)

Abstract

We review our recent work on spatial inhomogeneity of the electronic states in the strongly correlated molecular conductors κ-(BEDT-TTF) ₂X. Spatial mapping of infrared spectra (SMIS) is used for imaging the distribution of the local electronic states. In molecular materials, the infrared response of the specific molecular vibration mode with a strong electron-molecular vibration coupling can reflect the electronic states via the change in the vibration frequency. By spatially mapping the frequency shift of the molecular vibration mode, an electronic phase separation has been visualized near the first-order Mott transition in the bandwidth-controlled organic conductor κ-(BEDT-TTF)₂Cu[N(CN)₂]Br. In addition to reviewing SMIS of the phase separation, we briefly mention the electronic and optical properties of κ-(BEDT-TTF)₂X.

Original language	English
Article number	024306
Journal	Science and Technology of Advanced Materials
Volume	10
Issue number	2
DOIs	https://doi.org/10.1088/1468-6996/10/2/024306
Publication status	Published - 2009

Keywords

Imaging
Infrared spectroscopy
Mott transition
Organic conductor
Phase separation

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10.1088/1468-6996/10/2/024306

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title = "Spatial mapping of electronic states in κ-(BEDT-TTF) 2X using infrared reflectivity",

abstract = "We review our recent work on spatial inhomogeneity of the electronic states in the strongly correlated molecular conductors κ-(BEDT-TTF) 2X. Spatial mapping of infrared spectra (SMIS) is used for imaging the distribution of the local electronic states. In molecular materials, the infrared response of the specific molecular vibration mode with a strong electron-molecular vibration coupling can reflect the electronic states via the change in the vibration frequency. By spatially mapping the frequency shift of the molecular vibration mode, an electronic phase separation has been visualized near the first-order Mott transition in the bandwidth-controlled organic conductor κ-(BEDT-TTF)2Cu[N(CN)2]Br. In addition to reviewing SMIS of the phase separation, we briefly mention the electronic and optical properties of κ-(BEDT-TTF)2X.",

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T1 - Spatial mapping of electronic states in κ-(BEDT-TTF) 2X using infrared reflectivity

AU - Sasaki, Takahiko

AU - Yoneyama, Naoki

PY - 2009

Y1 - 2009

N2 - We review our recent work on spatial inhomogeneity of the electronic states in the strongly correlated molecular conductors κ-(BEDT-TTF) 2X. Spatial mapping of infrared spectra (SMIS) is used for imaging the distribution of the local electronic states. In molecular materials, the infrared response of the specific molecular vibration mode with a strong electron-molecular vibration coupling can reflect the electronic states via the change in the vibration frequency. By spatially mapping the frequency shift of the molecular vibration mode, an electronic phase separation has been visualized near the first-order Mott transition in the bandwidth-controlled organic conductor κ-(BEDT-TTF)2Cu[N(CN)2]Br. In addition to reviewing SMIS of the phase separation, we briefly mention the electronic and optical properties of κ-(BEDT-TTF)2X.

AB - We review our recent work on spatial inhomogeneity of the electronic states in the strongly correlated molecular conductors κ-(BEDT-TTF) 2X. Spatial mapping of infrared spectra (SMIS) is used for imaging the distribution of the local electronic states. In molecular materials, the infrared response of the specific molecular vibration mode with a strong electron-molecular vibration coupling can reflect the electronic states via the change in the vibration frequency. By spatially mapping the frequency shift of the molecular vibration mode, an electronic phase separation has been visualized near the first-order Mott transition in the bandwidth-controlled organic conductor κ-(BEDT-TTF)2Cu[N(CN)2]Br. In addition to reviewing SMIS of the phase separation, we briefly mention the electronic and optical properties of κ-(BEDT-TTF)2X.

KW - Imaging

KW - Infrared spectroscopy

KW - Mott transition

KW - Organic conductor

KW - Phase separation

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Spatial mapping of electronic states in κ-(BEDT-TTF) ₂X using infrared reflectivity

Abstract

Keywords

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