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

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

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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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) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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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