Peierls phase transition and nonlinear transport study of doped blue bronzes K0.3-xNaxMoO3

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	Peierls phase transition and nonlinear transport study of doped blue bronzes K0.3-xNaxMoO3
	D. L. Wang; Q. M. Xiao; W. F. Tang; T. Y. Zhao; J. Shi; D. C. Tian; M. L. Tian
	1999
发表期刊	Modern Physics Letters B
ISSN	0217-9849
卷号	13 期号:3-4 页码:109-117
摘要	Temperature dependence of Ohmic resistance, and nonlinear current-voltage (I-V) characteristics at 77 K were systematically studied in pure potassium blue bronze K0.3MoO3 and Na-doped alloy bronzes K0.3-xNaxMoO3 (x = 0.02, 0.05, 0.10). No considerable influence of Na ions doping in K0.3MoO3 was found on the Peierls transition temperature, while obvious enchancement on semiconductor gap and remarkable influence on the first threshold field were observed. We attribute the first phenomenon to two opposite effects of Na ions, and the depinning model is proposed to account for the latter. The analytical form of nonlinear charge-density wave current I-CDW in a moderate field range fits the power-law relation, i.e. I-CDW proportional to (V/V-T - 1)(alpha), where the exponent alpha is about 3/2 and slightly enhanced by Na ions doping.
部门归属	wuhan univ, dept phys, wuhan 430072, peoples r china. nanjing univ, natl key lab solid state microstruct, nanjing 210093, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. univ sci & technol china, struct res lab, hefei 230026, peoples r china.;tian, dc (reprint author), wuhan univ, dept phys, wuhan 430072, peoples r china
关键词	Charge-density Waves Potassium Molybdenum Bronze Non-linear Conductivity Nbse3 Impurities K0.30moo3 Threshold Noise
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WOS记录号	WOS:000080435500004
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/37516
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. L. Wang,Q. M. Xiao,W. F. Tang,et al. Peierls phase transition and nonlinear transport study of doped blue bronzes K0.3-xNaxMoO3[J]. Modern Physics Letters B,1999,13(3-4):109-117.
APA	D. L. Wang.,Q. M. Xiao.,W. F. Tang.,T. Y. Zhao.,J. Shi.,...&M. L. Tian.(1999).Peierls phase transition and nonlinear transport study of doped blue bronzes K0.3-xNaxMoO3.Modern Physics Letters B,13(3-4),109-117.
MLA	D. L. Wang,et al."Peierls phase transition and nonlinear transport study of doped blue bronzes K0.3-xNaxMoO3".Modern Physics Letters B 13.3-4(1999):109-117.