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	Jahn-Teller energy dependence of Curie temperature in La1-x (Ca/Sr)(x)MnO3
	Tang, F. L. ; Zhang, X.
	2010-05-10 ; 2010-05-10
关键词	LA1-XSRXMNO3 SINGLE-CRYSTALS PHASE-DIAGRAM COLOSSAL MAGNETORESISTANCE MANGANESE PEROVSKITES ATOMISTIC-SIMULATION TRANSPORT-PROPERTIES MAGNETIC-PROPERTIES HIGH-PRESSURE DOPED LAMNO3 MANGANITES Physics, Condensed Matter
中文摘要	Atomistic simulation has been performed on La1-x (Ca/Sr)(x)MnO3 to investigate the change of Jahn-Teller energy E-JT and its quantitative dependence of the Curie temperature T-C. When the doping density x increases from 0 to 0.33 (0.25), it is found that EJT of La1-xCaxMnO3 (La1-xSrxMnO3) decreases from 0.5 eV to 0.17 (0.1) eV. When the pressure changes from 0 to 4.5 GPa, EJT of La0.75Ca0.25MnO3 (La0.89Sr0.11MnO3) decreases from 0.14 (0.18) eV to 0.07 (0.09) eV. With E-JT and estimated bandwidth W, we calculated T-C, which agrees well with experimental data, especially in the case of being under pressure. It is also found that about 75% enhancement of T-C is contributed by E-JT and the rest by W. Therefore, we propose that E-JT plays a main role, whereas W plays a much less but not negligible role on T-C.
语种	英语 ; 英语
出版者	IOP PUBLISHING LTD ; BRISTOL ; DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/20768]
专题	清华大学
推荐引用方式 GB/T 7714	Tang, F. L.,Zhang, X.. Jahn-Teller energy dependence of Curie temperature in La1-x (Ca/Sr)(x)MnO3[J],2010, 2010.
APA	Tang, F. L.,&Zhang, X..(2010).Jahn-Teller energy dependence of Curie temperature in La1-x (Ca/Sr)(x)MnO3..
MLA	Tang, F. L.,et al."Jahn-Teller energy dependence of Curie temperature in La1-x (Ca/Sr)(x)MnO3".(2010).

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