Transportation of pinned charge density waves

We investigated the transport of pinned charge density waves (CDWs) that is observed in low dimensional materials. We treated pinned CDWs as moving CDWs that were confined within a typical quantum well amongst the many different types where pinning occurs at the barrier. We calculated the current fl...

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Bibliographic Details
Published in:Solid state communications 2009, Vol.149 (3), p.142-145
Main Authors: Koo, Je Huan, Jeong, Jae Yoon, Cho, Guangsup
Format: Article
Language:English
Subjects:
A. Charge density wave
B. Polymer
C. Magnetic susceptibility
Charge-density-wave systems
Collective effects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron states
Exact sciences and technology
Physics
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Summary:We investigated the transport of pinned charge density waves (CDWs) that is observed in low dimensional materials. We treated pinned CDWs as moving CDWs that were confined within a typical quantum well amongst the many different types where pinning occurs at the barrier. We calculated the current flowing out of the quantum well by confined CDWs. The calculated conductivity is in good correspondence with experimental data in TTF–TCNQ, where the measured Fröhlich–Peierls temperature is 60 K much higher than the theoretical value of 20 K. The voltage dependence of the conductivity was calculated, where this is easily transformed into the dependence of electric field. The magnetic susceptibility was also calculated with a similar trend of experimental data. The susceptibility is a diamagnetic contribution by CDWs in addition to the constant background Pauli paramagnetic part.
ISSN:0038-1098
1879-2766
DOI:10.1016/j.ssc.2008.10.037