Quasi-two-dimensional superconductivity from dimerization of atomically ordered AuTe2Se4/3 cubes

J. G. Guo (), X. Chen, X. Y. Jia, Q. H. Zhang, N. Liu, H. C. Lei, S. Y. Li, L. Gu, S. F. Jin and X. L. Chen ()
Additional contact information
J. G. Guo: Institute of Physics, Chinese Academy of Sciences
X. Chen: Institute of Physics, Chinese Academy of Sciences
X. Y. Jia: Fudan University
Q. H. Zhang: Institute of Physics, Chinese Academy of Sciences
N. Liu: Institute of Physics, Chinese Academy of Sciences
H. C. Lei: Renmin University of China
S. Y. Li: Fudan University
L. Gu: Institute of Physics, Chinese Academy of Sciences
S. F. Jin: Institute of Physics, Chinese Academy of Sciences
X. L. Chen: Institute of Physics, Chinese Academy of Sciences

Nature Communications, 2017, vol. 8, issue 1, 1-9

Abstract: Abstract The emergent phenomena such as superconductivity and topological phase transitions can be observed in strict two-dimensional (2D) crystalline matters. Artificial interfaces and one atomic thickness layers are typical 2D materials of this kind. Although having 2D characters, most bulky layered compounds, however, do not possess these striking properties. Here, we report quasi-2D superconductivity in bulky AuTe2Se4/3, where the reduction in dimensionality is achieved through inducing the elongated covalent Te–Te bonds. The atomic-resolution images reveal that the Au, Te, and Se are atomically ordered in a cube, among which are Te–Te bonds of 3.18 and 3.28 Å. The superconductivity at 2.85 K is discovered, which is unraveled to be the quasi-2D nature owing to the Berezinsky–Kosterlitz–Thouless topological transition. The nesting of nearly parallel Fermi sheets could give rise to strong electron–phonon coupling. It is proposed that further depleting the thickness could result in more topologically-related phenomena.

Date: 2017
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-017-00947-0 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-00947-0

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-017-00947-0

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().