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  Field-induced gapless electron pocket in the superconducting vortex phase of YNi2B2C as probed by magnetoacoustic quantum oscillations

Nössler, J., Seerig, R., Yasin, S., Uhlarz, M., Zherlitsyn, S., Behr, G., et al. (2017). Field-induced gapless electron pocket in the superconducting vortex phase of YNi2B2C as probed by magnetoacoustic quantum oscillations. Physical Review B, 95(1): 014523, pp. 1-6. doi:10.1103/PhysRevB.95.014523.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-3CCD-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-9CB9-F
Genre: Journal Article

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 Creators:
Nössler, J.1, Author
Seerig, R.1, Author
Yasin, S.1, Author
Uhlarz, M.1, Author
Zherlitsyn, S.1, Author
Behr, G.1, Author
Drechsler, S.-L.1, Author
Fuchs, G.1, Author
Rosner, H.2, Author              
Wosnitza, J.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              

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 Abstract: By use of ultrasound studies we resolved magnetoacoustic quantum oscillation deep into the mixed state of the multiband nonmagnetic superconductor YNi2B2C. Below the upper critical field, only a very weak additional damping appears that can be well explained by the field inhomogeneity caused by the flux-line lattice in the mixed state. This is clear evidence for no or a vanishingly small gap for one of the bands, namely, the spheroidal a band. This contrasts de Haas-van Alphen data obtained by use of torque magnetometry for the same sample, with a rapidly vanishing oscillation signal in the mixed state. This points to a strongly distorted flux-line lattice in the latter case that, in general, can hamper a reliable extraction of gap parameters by use of such techniques.

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Language(s): eng - English
 Dates: 2017-01-302017-01-30
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 95 (1) Sequence Number: 014523 Start / End Page: 1 - 6 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008