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Magnetic field–induced pair density wave state in the cuprate vortex halo

Journal Article · · Science

High magnetic fields suppress cuprate superconductivity to reveal an unusual density wave (DW) state coexisting with unexplained quantum oscillations. Although routinely labeled a charge density wave (CDW), this DW state could actually be an electron-pair density wave (PDW). To search for evidence of a field-induced PDW, we visualized modulations in the density of electronic states N ( r ) within the halo surrounding Bi 2 Sr 2 CaCu 2 O 8 vortex cores. We detected numerous phenomena predicted for a field-induced PDW, including two sets of particle-hole symmetric N ( r ) modulations with wave vectors Q P and 2 Q P , with the latter decaying twice as rapidly from the core as the former. These data imply that the primary field-induced state in underdoped superconducting cuprates is a PDW, with approximately eight CuO 2 unit-cell periodicity and coexisting with its secondary CDWs.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Cornell University, Ithaca, NY (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-98CH10886; SC0012704; SC0018946
OSTI ID:
1547160
Alternate ID(s):
OSTI ID: 2322516
OSTI ID: 1546042
Report Number(s):
BNL--211893-2019-JAAM; /sci/364/6444/976.atom
Journal Information:
Science, Journal Name: Science Journal Issue: 6444 Vol. 364; ISSN 0036-8075
Publisher:
American Association for the Advancement of Science (AAAS)Copyright Statement
Country of Publication:
United States
Language:
English

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