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Title: Dense superconducting phases of copper-bismuth at high pressure

Publication Date:
Sponsoring Org.:
OSTI Identifier:
Grant/Contract Number:
FG02-07ER46433; AC02-05CH11231
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review Materials
Additional Journal Information:
Journal Volume: 1; Journal Issue: 3; Related Information: CHORUS Timestamp: 2017-08-28 10:14:37; Journal ID: ISSN 2475-9953
American Physical Society
Country of Publication:
United States

Citation Formats

Amsler, Maximilian, and Wolverton, Chris. Dense superconducting phases of copper-bismuth at high pressure. United States: N. p., 2017. Web. doi:10.1103/PhysRevMaterials.1.031801.
Amsler, Maximilian, & Wolverton, Chris. Dense superconducting phases of copper-bismuth at high pressure. United States. doi:10.1103/PhysRevMaterials.1.031801.
Amsler, Maximilian, and Wolverton, Chris. 2017. "Dense superconducting phases of copper-bismuth at high pressure". United States. doi:10.1103/PhysRevMaterials.1.031801.
title = {Dense superconducting phases of copper-bismuth at high pressure},
author = {Amsler, Maximilian and Wolverton, Chris},
abstractNote = {},
doi = {10.1103/PhysRevMaterials.1.031801},
journal = {Physical Review Materials},
number = 3,
volume = 1,
place = {United States},
year = 2017,
month = 8

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on August 28, 2018
Publisher's Accepted Manuscript

Citation Metrics:
Cited by: 1work
Citation information provided by
Web of Science

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  • We synthesized a new phase from the B-C system, cubic BC{sub 4} (c-BC{sub 4}), by direct transformation from graphitic phases at a pressure of 44 GPa and a temperature 2020 K in a laser-heated diamond anvil cell (DAC). Both x-ray diffraction and Raman spectroscopy confirm the presence of cubic BC{sub 4} from the sample recovered at ambient conditions. The zero-pressure lattice parameter of the c-BC{sub 4} calculated from diffraction peaks was found to be 3.587 {angstrom}. The composition of the new phase is determined from electron microprobe (EMP) measurements. The value of the C/B ratio is around 4 (3.91 {+-}more » 0.26).« less
  • No abstract prepared.
  • The synthesis of materials in high-pressure experiments has recently attracted increasing attention, especially since the discovery of record breaking superconducting temperatures in the sulfur–hydrogen and other hydrogen-rich systems. Commonly, the initial precursor in a high pressure experiment contains constituent elements that are known to form compounds at ambient conditions, however the discovery of high-pressure phases in systems immiscible under ambient conditions poses an additional materials design challenge. We performed an extensive multi component ab initio structural search in the immiscible Fe–Bi system at high pressure and report on the surprising discovery of two stable compounds at pressures above ≈36 GPa,more » FeBi 2 and FeBi 3. According to our predictions, FeBi 2 is a metal at the border of magnetism with a conventional electron–phonon mediated superconducting transition temperature of T c = 1.3 K at 40 GPa.« less
  • Pseudopotential {ital ab} {ital initio} calculations are performed for three high-pressure phases of sulfur (bco, {beta}-Po, and bcc). These calculations yield a value of around 550 GPa for the transition pressure of the {beta}-Po to bcc transformation; however, we do not reproduce the reported bco to {beta}-Po phase transition. {ital Ab} {ital initio} calculations of the phonon spectrum and the electron-phonon interaction for the bcc phase of sulfur are also done using the frozen phonon method. The results predict that the bcc phase of sulfur is a metal with very low resistivity and a superconducting transition temperature of 15 K.