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  Evidence for a vestigial nematic state in the cuprate pseudogap phase

Mukhopadhyay, S., Sharma, R., Kim, C. K., Edkins, S. D., Hamidian, M. H., Eisaki, H., et al. (2019). Evidence for a vestigial nematic state in the cuprate pseudogap phase. Proceedings of the National Academy of Sciences of the United States of America, 116(27), 13249-13254. doi:10.1073/pnas.1821454116.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-828A-D Version Permalink: http://hdl.handle.net/21.11116/0000-0004-828D-A
Genre: Journal Article

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 Creators:
Mukhopadhyay, Sourin1, Author
Sharma, Rahul1, Author
Kim, Chung Koo1, Author
Edkins, Stephen D.1, Author
Hamidian, Mohammad H.1, Author
Eisaki, Hiroshi1, Author
Uchida, Shin-ichi1, Author
Kim, Eun-Ah1, Author
Lawler, Michael J.1, Author
Mackenzie, Andrew P.2, Author              
Davis, J. C. Séamus1, Author
Fujita, Kazuhiro1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863463              

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 Abstract: The CuO2 antiferromagnetic insulator is transformed by hole-doping into an exotic quantum fluid usually referred to as the pseudogap (PG) phase. Its defining characteristic is a strong suppression of the electronic density-of-states D(E) for energies vertical bar E vertical bar < Delta*, where Delta* is the PG energy. Unanticipated broken-symmetry phases have been detected by a wide variety of techniques in the PG regime, most significantly a finite-Q density-wave (DW) state and a Q = 0 nematic (NE) state. Sublattice-phase-resolved imaging of electronic structure allows the doping and energy dependence of these distinct broken-symmetry states to be visualized simultaneously. Using this approach, we show that even though their reported ordering temperatures T-DW and T-NE are unrelated to each other, both the DW and NE states always exhibit theirmaximumspectral intensity at the same energy, and using independent measurements that this is the PG energy Delta*. Moreover, no new energy-gap opening coincides with the appearance of the DW state (which should theoretically open an energy gap on the Fermi surface), while the observed PG opening coincides with the appearance of the NE state (which should theoretically be incapable of opening a Fermi-surface gap). We demonstrate how this perplexing phenomenology of thermal transitions and energy-gap opening at the breaking of two highly distinct symmetries may be understood as the natural consequence of a vestigial nematic state within the pseudogap phase of Bi2Sr2CaCu2O8.

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Language(s): eng - English
 Dates: 2019-06-032019-06-03
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1073/pnas.1821454116
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Title: Proceedings of the National Academy of Sciences of the United States of America
  Other : Proc. Acad. Sci. USA
  Other : Proc. Acad. Sci. U.S.A.
  Other : Proceedings of the National Academy of Sciences of the USA
  Abbreviation : PNAS
Source Genre: Journal
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Publ. Info: Washington, D.C. : National Academy of Sciences
Pages: - Volume / Issue: 116 (27) Sequence Number: - Start / End Page: 13249 - 13254 Identifier: ISSN: 0027-8424
CoNE: https://pure.mpg.de/cone/journals/resource/954925427230