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  Broken rotational symmetry on the Fermi surface of a high-T-c superconductor

Ramshaw, B. J., Harrison, N., Sebastian, S. E., Ghannadzadeh, S., Modic, K. A., Bonn, D. A., et al. (2017). Broken rotational symmetry on the Fermi surface of a high-T-c superconductor. npj Quantum Materials, 2: 8, pp. 1-6. doi:10.1038/s41535-017-0013-z.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-D8CC-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-D8CE-D
Genre: Journal Article

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 Creators:
Ramshaw, B. J.1, Author
Harrison, N.1, Author
Sebastian, S. E.1, Author
Ghannadzadeh, S.1, Author
Modic, K. A.2, Author              
Bonn, D. A.1, Author
Hardy, W. N.1, Author
Liang, Ruixing1, Author
Goddard, P. A.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Microstructured Quantum Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_2466701              

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 Abstract: Broken fourfold rotational (C-4) symmetry is observed in the experimental properties of several classes of unconventional superconductors. It has been proposed that this symmetry breaking is important for superconducting pairing in these materials, but in the high-T-c cuprates this broken symmetry has never been observed on the Fermi surface. Here we report a pronounced anisotropy in the angle dependence of the interlayer magnetoresistance of the underdoped high transition temperature (high-T-c) superconductor YBa2Cu3O6.58, directly revealing broken C-4 symmetry on the Fermi surface. Moreover, we demonstrate that this Fermi surface has C-2 symmetry of the type produced by a uniaxial or anisotropic density-wave phase. This establishes the central role of C-4 symmetry breaking in the Fermi surface reconstruction of YBa2Cu3O6+delta, and suggests a striking degree of universality among unconventional superconductors.

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Language(s): eng - English
 Dates: 2017-02-132017-02-13
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: ISI: 000407417100001
DOI: 10.1038/s41535-017-0013-z
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Title: npj Quantum Materials
Source Genre: Journal
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Publ. Info: [London] : Nature Publishing Group
Pages: - Volume / Issue: 2 Sequence Number: 8 Start / End Page: 1 - 6 Identifier: Other: 2397-4648
CoNE: /journals/resource/2397-4648