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

Edkins, S. D., Kostin, A., Fujita, K., Mackenzie, A. P., Eisaki, H., Uchida, S., et al. (2019). Magnetic field–induced pair density wave state in the cuprate vortex halo. Science, 364(6444), 976-980. doi:10.1126/science.aat1773.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-BD05-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-BD3A-8
Genre: Journal Article

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 Creators:
Edkins, S. D.1, Author
Kostin, A.1, Author
Fujita, K.1, Author
Mackenzie, A. P.2, Author              
Eisaki, H.1, Author
Uchida, S.1, Author
Sachdev, Subir1, Author
Lawler, Michael J.1, Author
Kim, E.-A.1, Author
Davis, J. C. Séamus1, Author
Hamidian, M. H.1, 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: Magnetic fields can cause the formation of vortices in a superconductor. In cuprate superconductors, the vortex cores are surrounded by “halos,” where the density of electronic states exhibits a checkerboard pattern. Edkins et al. used scanning tunneling spectroscopy to take a closer look into the halos. The results revealed that the patterns correspond to an exotic state called the pair density wave, in which the density of finite momentum Cooper pairs is spatially modulated.Science, this issue p. 976High 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 Bi2Sr2CaCu2O8 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 QP and 2QP, 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 CuO2 unit-cell periodicity and coexisting with its secondary CDWs.

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Language(s): eng - English
 Dates: 2019-06-072019-06-07
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1126/science.aat1773
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Title: Science
  Other : Science
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Association for the Advancement of Science
Pages: - Volume / Issue: 364 (6444) Sequence Number: - Start / End Page: 976 - 980 Identifier: ISSN: 0036-8075
CoNE: https://pure.mpg.de/cone/journals/resource/991042748276600_1