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Crystals 2012, 2(2), 579-589; doi:10.3390/cryst2020579
Article

Spin and Charge Transport in the X-ray Irradiated Quasi-2D Layered Compound: κ-(BEDT-TTF)2Cu[N(CN)2]Cl

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1 Condensed Matter Research Group of the Hungarian Academy of Sciences, P.O.Box 91, Budapest H-1521, Hungary 2 Institute of Physics, Budapest University of Technology and Economics, Budapest H-1111, Hungary 3 Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Takeda 4-4-37, Kofu, Yamanashi 400-8511, Japan 4 Laboratory of Physics of Complex Matter, École Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland 5 Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
* Author to whom correspondence should be addressed.
Received: 23 March 2012 / Revised: 25 April 2012 / Accepted: 11 May 2012 / Published: 24 May 2012
(This article belongs to the Special Issue Molecular Conductors)
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Abstract

The interplane spin cross relaxation time Tx measured by high frequency ESR in X-ray irradiated κ-(BEDT-TTF)2Cu[N(CN)2]Cl is compared to the interplane resisitivity ρ⊥and the in-plane resistivity ρII between 50 K and 250 K. The irradiation transforms the semiconductor behavior of the non-irradiated crystal into metallic. Irradiation decreases Tx, ρ⊥ and ρII but the ratio Tx/ρ⊥ and ρ⊥/ρII remain unchanged between 50 and 250 K. Models describing the unusual defect concentration dependence in κ-(BEDT-TTF)2Cu[N(CN)2]Cl are discussed.
Keywords: organic; two dimensional; X-ray irradiation organic; two dimensional; X-ray irradiation
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Antal, Á.; Fehér, T.; Yoneyama, N.; Forró, L.; Sasaki, T.; Jánossy, A. Spin and Charge Transport in the X-ray Irradiated Quasi-2D Layered Compound: κ-(BEDT-TTF)2Cu[N(CN)2]Cl. Crystals 2012, 2, 579-589.

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