| Substitutional alloy of bi and te at high pressure. | |
| | |
MedLine Citation:
|
PMID: 21561201 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Being a best known thermoelectric material and a topological insulator at ambient condition, magic bismuth telluride (Bi_{2}Te_{3}) under pressure transforms into several superconducting phases, whose structures remain unsolved for decades. Here, we have solved the two long-puzzling low high-pressure phases as seven- and eightfold monoclinic structures, respectively, through particle-swarm optimization technique on crystal structure prediction. Above 14.4 GPa, we experimentally discovered that Bi_{2}Te_{3} unexpectedly develops into a Bi-Te substitutional alloy by adopting a body-centered cubic disordered structure stable at least up to 52.1 GPa. The continuously monoclinic distortion leads to the ultimate formation of the Bi-Te alloy, which is attributed to the Bi→Te charge transfer under pressure. Our research provides a route to find alloys made of nonmetallic elements for a variety of applications. |
| | |
Authors:
|
Li Zhu; Hui Wang; Yanchao Wang; Jian Lv; Yanmei Ma; Qiliang Cui; Yanming Ma; Guangtian Zou |
Publication Detail:
|
Type: Journal Article Date: 2011-04-08 |
Journal Detail:
|
Title: Physical review letters Volume: 106 ISSN: 1079-7114 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2011 Apr |
Date Detail:
|
Created Date: 2011-05-12 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
|
Languages: eng Pagination: 145501 Citation Subset: IM |
Affiliation:
|
State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Probing nearest-neighbor correlations of ultracold fermions in an optical lattice.
Next Document: Controlling the bonding and band gaps of solid carbon monoxide with pressure.