教師資料查詢 | 類別: 期刊論文 | 教師: 李啟正 LEE, CHI-CHENG (瀏覽個人網頁)

標題: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Phys. Rev. B 61(6), 3851
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
語言英文(美國)
ISSN
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式,電子版
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