Lattice dynamics study of the structural transition in IrTe2
作者： Lei Zhang , Xiangde Zhu , Langsheng Ling , Changjin Zhang , Li Pi
DOI: 10.1080/14786435.2013.855333
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摘要: In this work, we perform a systematic study of the lattice dynamics IrTe using temperature dependence X-ray diffraction experiment. It is found that structural symmetry changes from trigonal (space group ) into monoclinic () below phase transition (). Remarkably, experimental results show cell still insists , which coexists intrinsically with cell. After transition, proportion almost remains unchanged. The structure temperatures determined cooling and warming are 240 K 265 K, respectively. Moreover, superlattice 13.5 suggested to be caused by destabilization polymeric Te–Te bonds.
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Paolo G. Radaelli, Y. Horibe, Matthias J. Gutmann, Hiroki Ishibashi, C. H. Chen, Richard M. Ibberson, Y. Koyama, Yew-San Hor, Valery Kiryukhin, Sang-Wook Cheong, Formation of isomorphic Ir3+ and Ir4+ octamers and spin dimerization in the spinel CuIr2S4. Nature. ,vol. 416, pp. 155- 158 ,(2002) , 10.1038/416155A
Ashvin Vishwanath, Ashvin Vishwanath, Sergey Y. Savrasov, Sergey Y. Savrasov, Xiangang Wan, Ari M. Turner, Topological semimetal and Fermi-arc surface states in the electronic structure of pyrochlore iridates Physical Review B. ,vol. 83, pp. 205101- ,(2011) , 10.1103/PHYSREVB.83.205101
M. Kamitani, M. S. Bahramy, R. Arita, S. Seki, T. Arima, Y. Tokura, S. Ishiwata, Superconductivity in Cu x IrTe 2 driven by interlayer hybridization Physical Review B. ,vol. 87, pp. 180501- ,(2013) , 10.1103/PHYSREVB.87.180501
Shoichi Nagata, Norihito Kijima, Shinichi Ikeda, Nobuhiro Matsumoto, Ryo Endoh, Susumu Chikazawa, Isao Shimono, Hironori Nishihara, Resistance anomaly in CuIr2Te4 Journal of Physics and Chemistry of Solids. ,vol. 60, pp. 163- 165 ,(1999) , 10.1016/S0022-3697(98)00281-9
Kiyoshi Mizuno, Ko-ichi Magishi, Yasuaki Shinonome, Takahito Saito, Kuniyuki Koyama, Nobuhiro Matsumoto, Shoichi Nagata, 125Te NMR study of IrTe2 Physica B-condensed Matter. ,vol. 312, pp. 818- 819 ,(2002) , 10.1016/S0921-4526(01)01262-5
Yoon Seok Oh, J. J. Yang, Y. Horibe, S.-W. Cheong, Anionic depolymerization transition in IrTe2. Physical Review Letters. ,vol. 110, pp. 127209- 127209 ,(2013) , 10.1103/PHYSREVLETT.110.127209
J.M. Léger, A.S. Pereira, J. Haines, S. Jobic, R. Brec, Phase transformations of polymeric CdI2-type IrTe2 under high pressure Journal of Physics and Chemistry of Solids. ,vol. 61, pp. 27- 34 ,(2000) , 10.1016/S0022-3697(99)00230-9
Fa Wang, T. Senthil, Twisted Hubbard Model for Sr 2 IrO 4 : Magnetism and Possible High Temperature Superconductivity Physical Review Letters. ,vol. 106, pp. 136402- ,(2011) , 10.1103/PHYSREVLETT.106.136402
Enric Canadell, Ste´phane Jobic, Raymond Brec, Jean Rouxel, Myung-Hwan Whangbo, Importance of short interlayer Te···Te contacts for the structural distortions and physical properties of CdI2-type layered transition-metal ditellurides Journal of Solid State Chemistry. ,vol. 99, pp. 189- 199 ,(1992) , 10.1016/0022-4596(92)90304-E
Jean Rouxel, Comments about Cationic-Anionic Redox Competition in the Solid State. The Formation of Anion Associations in the Solid State Comments on Inorganic Chemistry. ,vol. 14, pp. 207- 228 ,(1993) , 10.1080/02603599308048661