Extreme Fermi Surface Smearing in a Maximally Disordered Concentrated Solid Solution

Hannah C. Robarts; Thomas E. Millichamp; Daniel A. Lagos; Jude Laverock; David Billington; Jonathan A. Duffy; Daniel O'Neill; Sean R. Giblin; Jonathan W. Taylor; Grazyna Kontrym-Sznajd; Małgorzata Samsel-Czekała; Hongbin Bei; Sai Mu; German D. Samolyuk; G. Malcolm Stocks; Stephen B. Dugdale

doi:10.1103/PhysRevLett.124.046402

Extreme Fermi Surface Smearing in a Maximally Disordered Concentrated Solid Solution

Hannah C. Robarts, Thomas E. Millichamp, Daniel A. Lagos, Jude Laverock, David Billington, Jonathan A. Duffy, Daniel O'Neill, Sean R. Giblin, Jonathan W. Taylor, Grazyna Kontrym-Sznajd, Małgorzata Samsel-Czekała, Hongbin Bei, Sai Mu, German D. Samolyuk, G. Malcolm Stocks, Stephen B. Dugdale

Microstructural Evolution Modeling

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

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.

Original language	English
Article number	046402
Journal	Physical Review Letters
Volume	124
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.124.046402
State	Published - Jan 30 2020

Funding

Funders	Funder number
Engineering and Physical Sciences Research Council	EP/L015544/1

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Robarts, H. C., Millichamp, T. E., Lagos, D. A., Laverock, J., Billington, D., Duffy, J. A., O'Neill, D., Giblin, S. R., Taylor, J. W., Kontrym-Sznajd, G., Samsel-Czekała, M., Bei, H., Mu, S., Samolyuk, G. D., Stocks, G. M., & Dugdale, S. B. (2020). Extreme Fermi Surface Smearing in a Maximally Disordered Concentrated Solid Solution. Physical Review Letters, 124(4), Article 046402. https://doi.org/10.1103/PhysRevLett.124.046402

@article{59a7ef8187084a09858df580e9f91681,

title = "Extreme Fermi Surface Smearing in a Maximally Disordered Concentrated Solid Solution",

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.",

author = "Robarts, {Hannah C.} and Millichamp, {Thomas E.} and Lagos, {Daniel A.} and Jude Laverock and David Billington and Duffy, {Jonathan A.} and Daniel O'Neill and Giblin, {Sean R.} and Taylor, {Jonathan W.} and Grazyna Kontrym-Sznajd and Ma{\l}gorzata Samsel-Czeka{\l}a and Hongbin Bei and Sai Mu and Samolyuk, {German D.} and Stocks, {G. Malcolm} and Dugdale, {Stephen B.}",

note = "Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

year = "2020",

month = jan,

day = "30",

doi = "10.1103/PhysRevLett.124.046402",

language = "English",

volume = "124",

journal = "Physical Review Letters",

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Robarts, HC, Millichamp, TE, Lagos, DA, Laverock, J, Billington, D, Duffy, JA, O'Neill, D, Giblin, SR, Taylor, JW, Kontrym-Sznajd, G, Samsel-Czekała, M, Bei, H, Mu, S, Samolyuk, GD, Stocks, GM & Dugdale, SB 2020, 'Extreme Fermi Surface Smearing in a Maximally Disordered Concentrated Solid Solution', Physical Review Letters, vol. 124, no. 4, 046402. https://doi.org/10.1103/PhysRevLett.124.046402

TY - JOUR

T1 - Extreme Fermi Surface Smearing in a Maximally Disordered Concentrated Solid Solution

AU - Robarts, Hannah C.

AU - Millichamp, Thomas E.

AU - Lagos, Daniel A.

AU - Laverock, Jude

AU - Billington, David

AU - Duffy, Jonathan A.

AU - O'Neill, Daniel

AU - Giblin, Sean R.

AU - Taylor, Jonathan W.

AU - Kontrym-Sznajd, Grazyna

AU - Samsel-Czekała, Małgorzata

AU - Bei, Hongbin

AU - Mu, Sai

AU - Samolyuk, German D.

AU - Stocks, G. Malcolm

AU - Dugdale, Stephen B.

PY - 2020/1/30

Y1 - 2020/1/30

N2 - 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.

AB - 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.

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SN - 0031-9007

VL - 124

JO - Physical Review Letters

JF - Physical Review Letters

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M1 - 046402

ER -

Extreme Fermi Surface Smearing in a Maximally Disordered Concentrated Solid Solution

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