PROPERTIES OF TEMPERATURE DEPENDENCE OF THRESHOLD IN PURE AND IMPUHITY-DOPED BLUE BRONZES
TIAN MING-LIANG (田明亮)a, MAO ZHI-QIANG (毛志强)a, ZHANG YU-HENG (张裕恒)a, ZHANG YI-MIN (张一民)b, SHI JING (石兢)b, TIAN DE-CHENG (田德诚)b
a Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China; b Department of Physics, Wuhan University, Wuhan 430072, China
Abstract Temperature dependence of the threshold of pure and impurity-doped blue bronzes has been studied. It is found that for pare blue bronzes the threshold field near 100K has an anomalous peak, but for impurity-doped samples no anomaly is observed in the range of liquid nitrogen temperature, and the value of the threshold field gradu-ally increases with the decrease of temperature. The results show that in the high-quality pure blue bronzes, there may exist an incommensurate to quasi-commensurate transition near 100K. But for the impurity-doped or "dirty" pure samples, such an incommensurate to quasi-commensurate transition near 100K can be extensively re-strained by impurities or defects, which leads to a pure incommensurate CDW in a wide temperature range.
(Collective modes (e.g., in one-dimensional conductors))
Fund: Project Supported by the National Natural Science Foundation of China, and also by the Education Committee of the State Council through the Foundation of Doctoral Training.
Cite this article:
TIAN MING-LIANG (田明亮), MAO ZHI-QIANG (毛志强), ZHANG YU-HENG (张裕恒), ZHANG YI-MIN (张一民), SHI JING (石兢), TIAN DE-CHENG (田德诚) PROPERTIES OF TEMPERATURE DEPENDENCE OF THRESHOLD IN PURE AND IMPUHITY-DOPED BLUE BRONZES 1994 Acta Physica Sinica (Overseas Edition) 3 445
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