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Angular-dependent magnetoresistance oscillations in Na0.48CoO2 single crystals
Hu, F; Liu, GT; Luo, JL; Wu, D; Wang, NL; Xiang, T; Hu, F , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
2006
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号73期号:21页码:-
摘要We have measured the c-axis angular-dependent magnetoresistance (AMR) of a Na0.48CoO2 single crystal, with a magnetic field of 10 T rotating within Co-O planes. Below the metal-insulator transition temperature at 40 K, the AMR is dominated by a twofold oscillation due to the charge ordering. The fourfold and sixfold oscillations in AMR become pronounced below 25 K. The presence of this fourfold oscillation is consistent with the picture proposed by Choy (cond-mat/0502164) that the Co lattice will split into two orthogonal sublattices with one occupied by Co3+ ions and the other by Co4+ ions in low temperatures. Embedded in these orthogonal sublattices, a hexagonal lattice, formed by Co4+ spins, leads to the sixfold oscillation in AMR.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China; Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China
关键词Phase-transitions Na0.5coo2 Naxcoo2
学科领域Physics
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收录类别SCI
WOS记录号WOS:000238696200025
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5969
专题理论物理所1978-2010年知识产出
通讯作者Hu, F , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
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Hu, F,Liu, GT,Luo, JL,et al. Angular-dependent magnetoresistance oscillations in Na0.48CoO2 single crystals[J]. PHYSICAL REVIEW B,2006,73(21):-.
APA Hu, F.,Liu, GT.,Luo, JL.,Wu, D.,Wang, NL.,...&Hu, F , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.(2006).Angular-dependent magnetoresistance oscillations in Na0.48CoO2 single crystals.PHYSICAL REVIEW B,73(21),-.
MLA Hu, F,et al."Angular-dependent magnetoresistance oscillations in Na0.48CoO2 single crystals".PHYSICAL REVIEW B 73.21(2006):-.
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