Compression mechanisms in the anisotropically bonded elements Se and Te
學年 88
學期 2
出版(發表)日期 2000-02-01
作品名稱 Compression mechanisms in the anisotropically bonded elements Se and Te
作品名稱(其他語言)
著者 H. C. Hsueh; C. C. Lee; C. W. Wang; J. Crain
單位
出版者
著錄名稱、卷期、頁數 Physical Review B 61(6), p.3851-3856
摘要 The compression mechanisms of the elements selenium and tellurium (which exhibit highly anisotropic bonding under ambient conditions) are explored. A combination of experiments and ab initio simulation (including generalized gradient corrections) is used to examine the structural and dynamic properties of these elements in detail. The effect of pressure on both these systems is to enhance the weak interchain bonding at the expense of the stronger intrachain covalent interactions. This is manifested by a pronounced mode softening of the intrachain vibrational modes under pressure as found from both Raman spectroscopy and simulation. A corresponding increase of the rigid-chain rotation mode is also revealed by the calculations. We also investigate pressure-induced polymorphism in these materials in order to resolve controversy concerning the high-pressure crystallographic structures.
關鍵字
語言 en_US
ISSN 1098-0121
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度
國別 USA
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/117390 )