From antiferromagnetic insulator to correlated metal in pressurized and doped LaMnPO

	From antiferromagnetic insulator to correlated metal in pressurized and doped LaMnPO
	Simonson, JW; Yin, ZP; Pezzoli, M; Guo, J; Liu, J; Post, K; Efimenko, A; Hollmann, N; Hu, Z; Lin, HJ
刊名	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
	2012
卷号	109 期号:27 页码:E1815-E1819
关键词	correlated electron systems electronic delocalization transition
英文摘要	Widespread adoption of superconducting technologies awaits the discovery of new materials with enhanced properties, especially higher superconducting transition temperatures T-c. The unexpected discovery of high T-c superconductivity in cuprates suggests that the highest T(c)s occur when pressure or doping transform the localized and moment-bearing electrons in antiferromagnetic insulators into itinerant carriers in a metal, where magnetism is preserved in the form of strong correlations. The absence of this transition in Fe-based superconductors may limit their T(c)s, but even larger T(c)s may be possible in their isostructural Mn analogs, which are antiferromagnetic insulators like the cuprates. It is generally believed that prohibitively large pressures would be required to suppress the effects of the strong Hund's rule coupling in these Mn-based compounds, collapsing the insulating gap and enabling superconductivity. Indeed, no Mn-based compounds are known to be superconductors. The electronic structure calculations and X-ray diffraction measurements presented here challenge these long held beliefs, finding that only modest pressures are required to transform LaMnPO, isostructural to superconducting host LaFeAsO, from an antiferromagnetic insulator to a metallic antiferromagnet, where the Mn moment vanishes in a second pressure-driven transition. Proximity to these charge and moment delocalization transitions in LaMnPO results in a highly correlated metallic state, the familiar breeding ground of superconductivity.
学科主题	Science & Technology - Other Topics
收录类别	SCI
WOS记录号	WOS:000306641100005
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224368]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Simonson, JW,Yin, ZP,Pezzoli, M,et al. From antiferromagnetic insulator to correlated metal in pressurized and doped LaMnPO[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2012,109(27):E1815-E1819.
APA	Simonson, JW.,Yin, ZP.,Pezzoli, M.,Guo, J.,Liu, J.,...&Aronson, MC；刘景.(2012).From antiferromagnetic insulator to correlated metal in pressurized and doped LaMnPO.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,109(27),E1815-E1819.
MLA	Simonson, JW,et al."From antiferromagnetic insulator to correlated metal in pressurized and doped LaMnPO".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 109.27(2012):E1815-E1819.