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Title: Discovery of a Superconducting Cu-Bi Intermetallic Compound by High-Pressure Synthesis

Journal Article · · Angewandte Chemie (International Edition)
 [1];  [1];  [2];  [1];  [3];  [4];  [3];  [2];  [1]
  1. Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry
  2. Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
  3. Univ. of Chicago, IL (United States). Center for Advanced Radiation Sources
  4. Univ. Basel (Switzerland). Dept. of Physics

A new intermetallic compound, the first to be structurally identified in the Cu–Bi binary system, is reported herein. This compound is accessed by high-pressure reaction of the elements. Its detailed characterization, physical property measurements, and ab initio calculations are described. The commensurate crystal structure of Cu11Bi7 is a unique variation of the NiAs structure type. Temperature-dependent electrical resistivity and heat capacity measurements reveal a bulk superconducting transition at Tc=1.36 K. Density functional theory calculations further demonstrate that Cu11Bi7 can be stabilized (relative to decomposition into the elements) at high pressure and temperature. These results highlight the ability of high-pressure syntheses to allow for inroads into heretofore-undiscovered intermetallic systems for which no thermodynamically stable binaries are known.

Research Organization:
Northwestern Univ., Evanston, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
Defense Advanced Research Projects Agency (DARPA); US Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF); Swiss National Science Foundation (SNF); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
Grant/Contract Number:
FG02-94ER14466; FG02-07ER46433; AC02-06CH11357; AC02-05CH11231; W911NF15100069; FA95501410358; EAR-1128799; DGE-1324585; NNCI-1542205
OSTI ID:
1596770
Journal Information:
Angewandte Chemie (International Edition), Vol. 55, Issue 43; ISSN 1433-7851
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 36 works
Citation information provided by
Web of Science

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Cited By (4)

Discovery of Cu 3 Pb journal September 2018
Metal‐Free Dearomatization: Direct Access to Spiroindol(en)ines in Batch and Continuous‐Flow journal January 2019
The Intermetalloid Cluster Cation (CuBi 8 ) 3+ journal October 2017
Discovery of Cu 3 Pb journal September 2018