Low-temperature specific heat of the quasi-two-dimensional charge-density wave compound KMo6O17

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	Low-temperature specific heat of the quasi-two-dimensional charge-density wave compound KMo6O17
	J. F. Wang; R. Xiong; D. Yin; C. Z. Li; Z. Tang; Q. Q. Wang; J. Shi; Y. Wang; H. H. Wen
	2006
发表期刊	Physical Review B
ISSN	1098-0121
卷号	73 期号:19
摘要	Low temperature specific heat (C-p) of quasi-two-dimensional charge-density wave (CDW) compound KMo6O17 has been studied by a relaxation method from 2 to 48 K under zero and 12 T magnetic fields. The results show that no specific heat anomaly is found at 16 K under both zero and 12 T magnetic fields, although an anomaly is clearly observed in the resistivity and magnetoresistance measurements. From the data between 2 and 4 K, the density of states at Fermi level is estimated as 0.2 eV(-1) per molecule and the Debye temperature is extracted to be 418 K. A bump appearing in C-p/T-3 is found between 4 and 48 K centered around 12.5-15 K, indicating that the phason excitations contribute to the total specific heat similarly as in quasi-one-dimensional CDW conductors. Using a modified Debye model, a pinning frequency of 0.73 THz for KMo6O17 is estimated from the phason contribution.
部门归属	wuhan univ, key lab acoust & photon mat & devices, minist educ, wuhan 430072, peoples r china. wuhan univ, dept phys, wuhan 430072, peoples r china. acad sinica, int ctr mat phys, shenyang 110015, peoples r china. chinese acad sci, inst phys, natl lab superconduct, beijing 100080, peoples r china.;shi, j (reprint author), wuhan univ, key lab acoust & photon mat & devices, minist educ, wuhan 430072, peoples r china;jshi@whu.edu.cn
关键词	Blue Bronze K0.30moo3 Low-energy Excitations K0.9mo6o17 K0.3moo3 Potassium Conductor Thermodynamics Amo(6)o(17) Transition Particle
URL	查看原文
WOS记录号	WOS:000237950400002
引用统计	被引频次：1[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/321006/34507
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. F. Wang,R. Xiong,D. Yin,et al. Low-temperature specific heat of the quasi-two-dimensional charge-density wave compound KMo6O17[J]. Physical Review B,2006,73(19).
APA	J. F. Wang.,R. Xiong.,D. Yin.,C. Z. Li.,Z. Tang.,...&H. H. Wen.(2006).Low-temperature specific heat of the quasi-two-dimensional charge-density wave compound KMo6O17.Physical Review B,73(19).
MLA	J. F. Wang,et al."Low-temperature specific heat of the quasi-two-dimensional charge-density wave compound KMo6O17".Physical Review B 73.19(2006).