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Extreme Fermi surface smearing in a maximally disordered concentrated solid solution
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Robarts, Hannah C., Robarts, Thomas E., Lagos, Daniel A., Millichamp, Thomas E., Laverock, Jude, Billington, David, Duffy, J. A., O’Neill, Daniel, Giblin, Sean R., Taylor, Jonathan W., Kontrym-Sznajd, Grazyna, Samsel-Czekała, Małgorzata, Bei, Hongbin, Mu, Sai, Samolyuk, German D., Stocks, G. Malcolm and Dugdale, Stephen B. (2020) Extreme Fermi surface smearing in a maximally disordered concentrated solid solution. Physical Review Letters, 124 . 046402. doi:10.1103/PhysRevLett.124.046402 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.124.046402
Abstract
We show that the Fermi surface can survive the presence of extreme compositional disorder in the equiatomic alloy Ni0.25Fe0.25Co0.25Cr0.25. Our high-resolution Compton scattering experiments reveal a Fermi surface which is smeared across a significant fraction of the Brillouin zone (up to 40% of 2π/a). The extent of this smearing and its variation on and between different sheets of the Fermi surface have been determined, and estimates of the electron mean free path and residual resistivity have been made by connecting this smearing with the coherence length of the quasiparticle states.
Item Type: | Journal Article | ||||||||||||
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Subjects: | Q Science > QC Physics | ||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||
Library of Congress Subject Headings (LCSH): | Fermi surfaces, Compton effect, Brillouin scattering | ||||||||||||
Journal or Publication Title: | Physical Review Letters | ||||||||||||
Publisher: | American Physical Society | ||||||||||||
ISSN: | 0031-9007 | ||||||||||||
Official Date: | 30 January 2020 | ||||||||||||
Dates: |
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Volume: | 124 | ||||||||||||
Article Number: | 046402 | ||||||||||||
DOI: | 10.1103/PhysRevLett.124.046402 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Reuse Statement (publisher, data, author rights): | © 2020 American Physical Society | ||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
Date of first compliant deposit: | 29 October 2020 | ||||||||||||
Date of first compliant Open Access: | 3 November 2020 | ||||||||||||
RIOXX Funder/Project Grant: |
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