Pair density wave at high magnetic fields in cuprates with charge and spin orders

Shi, Z., Baity, P.G. , Terzic, J., Sasagawa, T. and Popović, D. (2020) Pair density wave at high magnetic fields in cuprates with charge and spin orders. Nature Communications, 11, 3323. (doi: 10.1038/s41467-020-17138-z) (PMID:32620752) (PMCID:PMC7335199)

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In underdoped cuprates, the interplay of the pseudogap, superconductivity, and charge and spin ordering can give rise to exotic quantum states, including the pair density wave (PDW), in which the superconducting (SC) order parameter is oscillatory in space. However, the evidence for a PDW state remains inconclusive and its broader relevance to cuprate physics is an open question. To test the interlayer frustration, the crucial component of the PDW picture, we perform transport measurements on charge- and spin-stripe-ordered La Eu Sr CuO and La Nd Sr CuO in perpendicular magnetic fields (H ), and also with an additional field applied parallel to CuO layers (H ). We detect several phenomena predicted to arise from the existence of a PDW, including an enhancement of interlayer SC phase coherence with increasing H . These data also provide much-needed transport signatures of the PDW in the regime where superconductivity is destroyed by quantum phase fluctuations.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Baity, Dr Paul
Authors: Shi, Z., Baity, P.G., Terzic, J., Sasagawa, T., and Popović, D.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Nature Communications
Publisher:Nature Research
ISSN (Online):2041-1723
Copyright Holders:Copyright © 2020 The Authors
First Published:First published in Nature Communications 11: 3323
Publisher Policy:Reproduced under a Creative Commons License

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