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Fermi surface transformation at the pseudogap critical point of a cuprate superconductor
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Fang, Yawen, Grissonnanche, Gaël, Legros, Anaëlle, Verret, Simon, Laliberte, Francis, Collignon, Clément, Ataei, Amirreza, Dion, Maxime , Zhou, Jianshi, Graf, David, Lawler, M. J., Goddard, Paul, Taillefer, Louis and Ramshaw, B. J. (2022) Fermi surface transformation at the pseudogap critical point of a cuprate superconductor. Nature Physics, 18 . pp. 558-564. doi:10.1038/s41567-022-01514-1 ISSN 1745-2473.
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Official URL: https://doi.org/10.1038/s41567-022-01514-1
Abstract
The nature of the pseudogap phase remains a major puzzle in our understanding of cuprate high-temperature superconductivity. Whether or not this metallic phase is defined by any of the reported broken symmetries, the topology of its Fermi surface remains a fundamental open question. Here we use angle-dependent magnetoresistance (ADMR) to measure the Fermi surface of the La1.6–xNd0.4SrxCuO4 cuprate. Outside the pseudogap phase, we fit the ADMR data and extract a Fermi surface geometry that is in excellent agreement with angle-resolved photoemission data. Within the pseudogap phase, the ADMR is qualitatively different, revealing a transformation of the Fermi surface. We can rule out changes in the quasiparticle lifetime as the sole cause of this transformation. We find that our data are most consistent with a pseudogap Fermi surface that consists of small, nodal hole pockets, thereby accounting for the drop in carrier density across the pseudogap transition found in several cuprates.
Item Type: | Journal Article | |||||||||||||||||||||||||||||||||||||||
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Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Fermi surfaces, High temperature superconductivity, Magnetoresistance, Semiconductor doping, Energy gap (Physics) | |||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Nature Physics | |||||||||||||||||||||||||||||||||||||||
Publisher: | Nature Publishing Group | |||||||||||||||||||||||||||||||||||||||
ISSN: | 1745-2473 | |||||||||||||||||||||||||||||||||||||||
Official Date: | May 2022 | |||||||||||||||||||||||||||||||||||||||
Dates: |
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Volume: | 18 | |||||||||||||||||||||||||||||||||||||||
Page Range: | pp. 558-564 | |||||||||||||||||||||||||||||||||||||||
DOI: | 10.1038/s41567-022-01514-1 | |||||||||||||||||||||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||||||||||||||||||||
Date of first compliant deposit: | 3 February 2022 | |||||||||||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 10 September 2022 | |||||||||||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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