Infrared signature of the charge-density-wave gap in ZrTe3

被引：0
|
作者：
A. Perucchi
L. Degiorgi
H. Berger
机构：
[1] Laboratorium für Festkörperphysik,
[2] Department of Physics,undefined
来源：
The European Physical Journal B - Condensed Matter and Complex Systems | 2005年 / 48卷
关键词：
Spectroscopy; Neural Network; State Physics; Complex System; Nonlinear Dynamics;
D O I：
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学科分类号：
摘要：
The chain-like ZrTe3 compound undergoes a charge-density-wave (CDW) transition at TCDW=63 K, most strongly affecting the conductivity perpendicular to the chains. We measure the temperature (T) dependence of the optical reflectivity from the far infrared up to the ultraviolet with polarized light. The CDW gap Δ(T) along the direction perpendicular to the chains is compatible for T<TCDW with the behavior of an order parameter within the mean-field Bardeen-Cooper-Schrieffer (BCS) theory. Δ(T) also persists well above TCDW, which emphasizes the role played by fluctuation effects.
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页码：489 / 493
页数：4
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