锐钛矿Ti1-xCoxO2在低温区的反常霍尔效应
材料科学
2009-11-13 v2 强关联电子
摘要
研究了铁磁半导体锐钛矿\cotio薄膜在10K至300K温度范围内的反常霍尔效应(AHE)。反常霍尔电阻的磁场依赖性与磁化强度一致，而反常霍尔电阻在低温下减小，尽管磁化强度几乎与温度无关。发现反常霍尔电导率sigma_AHE与霍尔迁移率的平方成正比，表明电荷散射强烈影响该系统中的AHE。锐钛矿Ti1-xCoxO2也遵循sigma_AHE ~ sigma_xx^1.6的电导率sigma_xx标度关系，这在另一种多晶型金红石Ti1-xCoxO2中也观察到，表明它们的AHE机制相同。
引用
@article{arxiv.cond-mat/0701395,
title = {Anomalous Hall effect in anatase Ti1-xCoxO2 at low temperature regime},
author = {Kazunori Ueno and Tomoteru Fukumura and Hidemi Toyosaki and Masaki Nakano and Masashi Kawasaki},
journal= {arXiv preprint arXiv:cond-mat/0701395},
year = {2009}
}
备注
3 pages, 4 figures; modified Refs. 9 and 13 according to journal's queries, and modified some sentences related on sample composition of Refs. 7, 8 and 9 in order to avoid misinterpretation of these references