Highly anisotropic resistivities in the double-exchange model for strained manganites

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	Highly anisotropic resistivities in the double-exchange model for strained manganites
	S. Dong; S. Yunoki; X. T. Zhang; C. Sen; J. M. Liu; E. Dagotto
	2010
发表期刊	Physical Review B
ISSN	1098-0121
卷号	82 期号:3
摘要	The highly anisotropic resistivities in strained manganites are theoretically studied using the two-orbital double-exchange model. At the nanoscale, the anisotropic double-exchange and Jahn-Teller distortions are found to be responsible for the robust anisotropic resistivities observed here via Monte Carlo simulations. An unbalance in the population of orbitals caused by strain is responsible for these effects. In contrast, the anisotropic superexchange is found to be irrelevant to explain our results. Our model study suggests that highly anisotropic resistivities could be present in a wide range of strained manganites, even without (sub)micrometer-scale phase separation. In addition, our calculations also confirm the formation of anisotropic clusters in phase-separated manganites, which magnifies the anisotropic resistivities.
部门归属	[dong, shuai] southeast univ, dept phys, nanjing 211189, peoples r china. [dong, shuai; liu, j. -m.] nanjing univ, nanjing natl lab microstruct, nanjing 210093, peoples r china. [yunoki, seiji] riken, computat condensed matter phys lab, wako, saitama 3510198, japan. [yunoki, seiji] japan sci & technol agcy, crest, kawaguchi, saitama 3320012, japan. [zhang, xiaotian; sen, cengiz; dagotto, elbio] univ tennessee, dept phys & astron, knoxville, tn 37996 usa. [zhang, xiaotian; sen, cengiz; dagotto, elbio] oak ridge natl lab, mat sci & technol div, oak ridge, tn 38231 usa. [liu, j. -m.] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;dong, s (reprint author), southeast univ, dept phys, nanjing 211189, peoples r china
关键词	Jahn-teller Distortion Magnetoresistive Manganites Colossal Magnetoresistance Tetragonal Manganites Doped Manganites Phase-separation Electronics Transition Diagram
URL	查看原文
WOS记录号	WOS:000280208000002
引用统计	被引频次：37[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/321006/31075
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Dong,S. Yunoki,X. T. Zhang,et al. Highly anisotropic resistivities in the double-exchange model for strained manganites[J]. Physical Review B,2010,82(3).
APA	S. Dong,S. Yunoki,X. T. Zhang,C. Sen,J. M. Liu,&E. Dagotto.(2010).Highly anisotropic resistivities in the double-exchange model for strained manganites.Physical Review B,82(3).
MLA	S. Dong,et al."Highly anisotropic resistivities in the double-exchange model for strained manganites".Physical Review B 82.3(2010).