渭SR Investigation of the Hollandite Vanadate K₂V₈O₁₆

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• 作者：Kim H. Chow^a ; ^{khchow@ualberta.ca} ; Martin Må ; nsson^b ; ^c ; YutakaIkedo^d ; Jun Sugiyama^d ; Oren Ofer^e ; Eduardo J. Ansaldo^e ; Jess H. Brewer^e ; ^f ; Masahiko Isobe^g ; Hirotada Gotou^g ; Takehiko Yagi^g ; Yutaka Ueda^g ; Christopher Baines^h
• 关键词：Vanadate ; low dimensional system ; K2V8O16 ; magnetism ; muon
• 刊名：Physics Procedia
• 出版年：2012
• 期刊代码：P128_18753892
• 类别：ph
• 出版时间：2012
• 卷：30
• 期：Complete
• 页码：117-120
• 文件大小：285 K

摘要

The quasi-one-dimensional hollanditevanadateK2V8O16is believedtohavea spin-singlet-like transitionat 鈮?170 K.Weinvestigateda polycrystalline sampleof K2V8O16 using zero-field 渭SR.Paramagnetic electronic fluctuations, manifested as a relaxation of the muon polarization function, exist at all temperatures. There are only smooth and slight changes in the relaxation rate as the temperature of the sample is decreased from 200 K. Below about 10 K, there is a significant increase in the relaxation rate, implying a slow-down of the paramagnetic fluctuations.