Pressure Effect on the Structural Transition and Suppression of the High-Spin State in the Triple-Layer T-'-La4Ni3O8

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	Pressure Effect on the Structural Transition and Suppression of the High-Spin State in the Triple-Layer T-'-La4Ni3O8
	Cheng, JG ; Zhou, JS ; Goodenough, JB ; Zhou, HD ; Matsubayashi, K ; Uwatoko, Y ; Kong, PP ; Jin, CQ ; Yang, WG ; Shen, GY
刊名	PHYSICAL REVIEW LETTERS
	2012
卷号	108 期号:23
ISSN号	0031-9007
通讯作者	Cheng, JG (reprint author), Univ Texas Austin, Mat Sci & Engn Program Mech Engn, Austin, TX 78712 USA.
中文摘要	We report a comprehensive high-pressure study on the triple-layer T-'-La4Ni3O8 with a suite of experimental probes, including structure determination, magnetic, and transport properties up to 50 GPa. Consistent with a recent ab inito calculation, application of hydrostatic pressure suppresses an insulator-metal spin-state transition at P-C approximate to 6 GPa. However, a low-spin metallic phase does not emerge after the high-spin state is suppressed to the lowest temperature. For P > 20 GPa, the ambient T-' structure transforms gradually to a T-dagger-type structure, which involves a structural reconstruction from fluorite La-O-2-La blocks under low pressures to rock-salt LaO-LaO blocks under high pressures. Absence of the metallic phase under pressure has been discussed in terms of local displacements of O(2-)ions in the fluorite block under pressure before a global T-dagger phase is established.
收录类别	SCI
资助信息	NSF [DMR0904282, MIRT DMR1122603, DMR0654118]; Robert A. Welch Foundation [F-1066]; State of Florida; MOST of China; CIW; CDAC; UNLV; LLNL; DOE-NNSA; DOE-BES
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/51402]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Cheng, JG,Zhou, JS,Goodenough, JB,et al. Pressure Effect on the Structural Transition and Suppression of the High-Spin State in the Triple-Layer T-'-La4Ni3O8[J]. PHYSICAL REVIEW LETTERS,2012,108(23).
APA	Cheng, JG.,Zhou, JS.,Goodenough, JB.,Zhou, HD.,Matsubayashi, K.,...&Shen, GY.(2012).Pressure Effect on the Structural Transition and Suppression of the High-Spin State in the Triple-Layer T-'-La4Ni3O8.PHYSICAL REVIEW LETTERS,108(23).
MLA	Cheng, JG,et al."Pressure Effect on the Structural Transition and Suppression of the High-Spin State in the Triple-Layer T-'-La4Ni3O8".PHYSICAL REVIEW LETTERS 108.23(2012).