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Acta Physica Sinica (Overseas Edition), 1994, Vol. 3(6): 445-452    DOI: 10.1088/1004-423X/3/6/007
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

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.
Received:  28 May 1993      Accepted manuscript online: 
PACS:  71.45.Lr (Charge-density-wave systems)  
  64.70.Rh (Commensurate-incommensurate transitions)  
  72.15.Nj (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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