ITP OpenIR  > 理论物理所2011年知识产出
Pressure- and temperature-induced structural phase transitions of CaFe2As2 and BaFe2As2 studied in the Hund
Ji, W; Yan, XW; Lu, ZY; Ji, W (reprint author), Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China.
2011
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号83期号:13页码:132504
摘要With the proposed Hund's rule correlation picture, i.e., the fluctuating Fe local moments with the As-bridged antiferromagnetic superexchange interactions, the exceptional collapsed tetragonal phase and related phase transitions observed in CaFe2As2 are well understood. Within the same framework, a pressure-temperature phase diagram is predicted for BaFe2As2 as well, in which a paramagnetic tetragonal structure and a collinear antiferromagnetic orthorhombic structure to nonmagnetic tetragonal structure transitions take place around 4-8 GPa and 10-15 GPa, respectively, and a nonmagnetic tetragonal to a nonmagnetic collapsed tetragonal structure transition takes place over 26 GPa. Our study helps to better understand the complex correlation among crystal structure, magnetism, and electronic structure in pnictides, a precondition to understanding the superconductivity in pnictides.
部门归属[Ji, Wei; Yan, Xun-Wang; Lu, Zhong-Yi] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China; [Yan, Xun-Wang] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
关键词Superconductivity
学科领域Physics
资助者NSFC; FRFCU of MOE at RUC [10XNF085]; MOST [2011CBA00112] ; NSFC; FRFCU of MOE at RUC [10XNF085]; MOST [2011CBA00112] ; NSFC; FRFCU of MOE at RUC [10XNF085]; MOST [2011CBA00112] ; NSFC; FRFCU of MOE at RUC [10XNF085]; MOST [2011CBA00112]
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收录类别SCI
语种英语
资助者NSFC; FRFCU of MOE at RUC [10XNF085]; MOST [2011CBA00112] ; NSFC; FRFCU of MOE at RUC [10XNF085]; MOST [2011CBA00112] ; NSFC; FRFCU of MOE at RUC [10XNF085]; MOST [2011CBA00112] ; NSFC; FRFCU of MOE at RUC [10XNF085]; MOST [2011CBA00112]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14369
专题理论物理所2011年知识产出
通讯作者Ji, W (reprint author), Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China.
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GB/T 7714
Ji, W,Yan, XW,Lu, ZY,et al. Pressure- and temperature-induced structural phase transitions of CaFe2As2 and BaFe2As2 studied in the Hund[J]. PHYSICAL REVIEW B,2011,83(13):132504.
APA Ji, W,Yan, XW,Lu, ZY,&Ji, W .(2011).Pressure- and temperature-induced structural phase transitions of CaFe2As2 and BaFe2As2 studied in the Hund.PHYSICAL REVIEW B,83(13),132504.
MLA Ji, W,et al."Pressure- and temperature-induced structural phase transitions of CaFe2As2 and BaFe2As2 studied in the Hund".PHYSICAL REVIEW B 83.13(2011):132504.
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