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arXiv 0812.4689cond-mat.str-elcond-mat.mtrl-sci
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准一维导体o-TaS_3的电场相关能量结构

Electric-field-dependent energy structure of quasi-one-dimensional conductor o-TaS_3

V. F. Nasretdinova, S. V. Zaitsev-Zotov

摘要:

本文用光电导光谱研究了正交晶系TaS $_3$的Peierls能隙的能量结构。观察到了带隙边缘和Peierls带隙内的能级。发现能级的振幅依赖于温度和电场。10 V/cm量级的电场影响能级并导致峰之间强度的重新分布。小的电场值表明集体态参与了Peierls能隙内能级的形成。

英文摘要:

Energy structure of the Peierls gap in orthorhombic TaS$_3$ is examined by spectral study of photoconduction. The gap edge and energy levels inside the Peierls gap are observed. The amplitude of the energy levels is found to depend on both the temperature and the electric field. The electric field of the order of 10 V/cm affects the energy levels and leads to the redistribution of intensity between peaks. The small value of the electric field indicates participation of the collective state in formation of the energy levels inside the Peierls gap.

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