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Broken rotational symmetry on the Fermi surface of a high-Tc superconductor
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Ramshaw, Brad, Harrison, Neil, Suchitra, Sebastian, Ghannadzadeh, Saman, Modic, Kimberly, Bonn, Doug, Liang, Ruixing, Hardy, Walter and Goddard, Paul (2017) Broken rotational symmetry on the Fermi surface of a high-Tc superconductor. npj Quantum Materials, 2 (1). 8. doi:10.1038/s41535-017-0013-z ISSN 2397-4648.
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Official URL: https://doi.org/10.1038/s41535-017-0013-z
Abstract
Broken fourfold rotational (C4) 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-Tc 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-Tc) superconductor YBa2Cu3O6.58, directly revealing broken C4 symmetry on the Fermi surface. Moreover, we demonstrate that this Fermi surface has C2 symmetry of the type produced by a uniaxial or anisotropic density-wave phase. This establishes the central role of C4 symmetry breaking in the Fermi surface reconstruction of YBa2Cu3O6+δ , and suggests a striking degree of universality among unconventional superconductors.
| 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, Superconductors | ||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | npj Quantum Materials | ||||||||||||||||||||||||||||||||||||
| Publisher: | Nature Publishing Group | ||||||||||||||||||||||||||||||||||||
| ISSN: | 2397-4648 | ||||||||||||||||||||||||||||||||||||
| Official Date: | 13 February 2017 | ||||||||||||||||||||||||||||||||||||
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| Volume: | 2 | ||||||||||||||||||||||||||||||||||||
| Number: | 1 | ||||||||||||||||||||||||||||||||||||
| Article Number: | 8 | ||||||||||||||||||||||||||||||||||||
| DOI: | 10.1038/s41535-017-0013-z | ||||||||||||||||||||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||||||||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||||||||||||||||||||
| Date of first compliant deposit: | 20 January 2017 | ||||||||||||||||||||||||||||||||||||
| Date of first compliant Open Access: | 28 February 2017 | ||||||||||||||||||||||||||||||||||||
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