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Opposite pressure effects in the orbitally-induced Peierls phase transition systems CuIr2S4 and MgTi2O4

文献类型：期刊论文

作者Ma, Long1; Han, Hui1,2; Liu, Wei1,2; Yang, Kaishuai3; Zhu, Yuanyuan4; Zhang, Changjin1; Pi, Li1,5; Liu, Dayong3; Zhang, Lei1; Zhang, Yuheng1,5
刊名DALTON TRANSACTIONS
出版日期2017-05-28
卷号46期号:20页码:6708-6714
DOI10.1039/c7dt00527j
文献子类Article
英文摘要The iso-spinel structural systems CuIr2S4 and MgTi2O4 exhibit phase transitions of a similar nature at similar to 230 K and similar to 260 K respectively, which are explained as an orbitally-induced Peierls phase transition. However, in this work, we uncover that the applied pressure has opposite pressure effects on the phase transitions in CuIr2S4 and MgTi2O4. As the pressure increases, the phase transition temperature (T-MI) for CuIr2S4 increases while that for MgTi2O4 decreases. In addition, the phase transition intensity becomes weaker for CuIr2S4 but gets stronger for MgTi2O4 under pressure. Our results indicate that the applied pressure suppresses the metallic phase in CuIr2S4, while enhances that in MgTi2O4. Combining the experimental observations with first-principles electronic structure calculations, we suggest that the opposite pressure effects in CuIr2S4 and MgTi2O4 originate from the different orbital ordering configurations (d(xy), d(yz)/d(xz)) caused by different lattice distortions in these two systems. Our findings indicate directly that the interplay between the orbital and lattice degrees of freedom plays an important role in the orbitally-induced Peierls phase transition.
WOS关键词METAL-INSULATOR-TRANSITION ; THIOSPINEL CUIR2S4 ; SPINEL ; RESONANCE
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000401936700025
资助机构National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; U1332140 ; U1332140 ; U1332140 ; U1332140 ; U1332140 ; U1332140 ; U1332140 ; U1332140 ; 11574315 ; 11574315 ; 11574315 ; 11574315 ; 11574315 ; 11574315 ; 11574315 ; 11574315 ; 11504377 ; 11504377 ; 11504377 ; 11504377 ; 11504377 ; 11504377 ; 11504377 ; 11504377 ; 11574288) ; 11574288) ; 11574288) ; 11574288) ; 11574288) ; 11574288) ; 11574288) ; 11574288) ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; National Natural Science Foundation of China(11574322 ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; State Key Project of Fundamental Research of China(2011CBA00111) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; Foundation for Users with Potential of Hefei Science Center (CAS)(2015HSC-UP001) ; U1332140 ; U1332140 ; U1332140 ; U1332140 ; U1332140 ; U1332140 ; U1332140 ; U1332140 ; 11574315 ; 11574315 ; 11574315 ; 11574315 ; 11574315 ; 11574315 ; 11574315 ; 11574315 ; 11504377 ; 11504377 ; 11504377 ; 11504377 ; 11504377 ; 11504377 ; 11504377 ; 11504377 ; 11574288) ; 11574288) ; 11574288) ; 11574288) ; 11574288) ; 11574288) ; 11574288) ; 11574288)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/31946]  
专题合肥物质科学研究院_中科院强磁场科学中心
作者单位1.Chinese Acad Sci, High Field Magnet Lab, Anhui Key Lab Condensed Matter Phys Extreme Condi, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
4.Shanxi Univ Sci & Technol, Sch Arts & Sci, Xian 710021, Peoples R China
5.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Long,Han, Hui,Liu, Wei,et al. Opposite pressure effects in the orbitally-induced Peierls phase transition systems CuIr2S4 and MgTi2O4[J]. DALTON TRANSACTIONS,2017,46(20):6708-6714.
APA Ma, Long.,Han, Hui.,Liu, Wei.,Yang, Kaishuai.,Zhu, Yuanyuan.,...&Zhang, Yuheng.(2017).Opposite pressure effects in the orbitally-induced Peierls phase transition systems CuIr2S4 and MgTi2O4.DALTON TRANSACTIONS,46(20),6708-6714.
MLA Ma, Long,et al."Opposite pressure effects in the orbitally-induced Peierls phase transition systems CuIr2S4 and MgTi2O4".DALTON TRANSACTIONS 46.20(2017):6708-6714.

入库方式： OAI收割

来源：合肥物质科学研究院

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