Abstract

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 La1.7Eu0.2Sr0.1CuO4 and La1.48Nd0.4Sr0.12CuO4 in perpendicular magnetic fields (H), and also with an additional field applied parallel to CuO2 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.

Among the exotic phases in underdoped cuprates, the evidence of a pair density wave (PDW) remains inconclusive. Here, Shi et al. report transport signatures consistent with the presence of PDW pairing correlations that compete with uniform superconductivity in two underdoped cuprate superconductors.

Details

Title
Pair density wave at high magnetic fields in cuprates with charge and spin orders
Author
Shi Zhenzhong 1   VIAFID ORCID Logo  ; Baity, P G 2 ; Terzic, J 3 ; Sasagawa, T 4 ; Popović Dragana 5   VIAFID ORCID Logo 

 Florida State University, National High Magnetic Field Laboratory, Tallahassee, USA (GRID:grid.255986.5) (ISNI:0000 0004 0472 0419); Duke University, Department of Physics, Durham, USA (GRID:grid.26009.3d) (ISNI:0000 0004 1936 7961) 
 Florida State University, National High Magnetic Field Laboratory, Tallahassee, USA (GRID:grid.255986.5) (ISNI:0000 0004 0472 0419); Florida State University, Department of Physics, Tallahassee, USA (GRID:grid.255986.5) (ISNI:0000 0004 0472 0419); University of Glasgow, James Watt School of Engineering, Glasgow, UK (GRID:grid.8756.c) (ISNI:0000 0001 2193 314X) 
 Florida State University, National High Magnetic Field Laboratory, Tallahassee, USA (GRID:grid.255986.5) (ISNI:0000 0004 0472 0419) 
 Tokyo Institute of Technology, Materials and Structures Laboratory, Kanagawa, Japan (GRID:grid.32197.3e) (ISNI:0000 0001 2179 2105) 
 Florida State University, National High Magnetic Field Laboratory, Tallahassee, USA (GRID:grid.255986.5) (ISNI:0000 0004 0472 0419); Florida State University, Department of Physics, Tallahassee, USA (GRID:grid.255986.5) (ISNI:0000 0004 0472 0419) 
Publication year
2020
Publication date
2020
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2419780229
Copyright
© The Author(s) 2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.