Fermi Surface and Order Parameter Driven Vortex Lattice Structure Transitions in Twin-Free YBa2Cu3O7

J.S. White; V. Hinkov; R.W. Heslop; R.J. Lycett; E.M. Forgan; C. Bowell; S. Strässle; Asger Bech Abrahamsen; M. Laver; C.D. Dewhurst; J. Kohlbrecher; J.L. Gavilano; J. Mesot; B. Keimer; A. Erb

doi:10.1103/PhysRevLett.102.097001

Fermi Surface and Order Parameter Driven Vortex Lattice Structure Transitions in Twin-Free YBa2Cu3O7

J.S. White, V. Hinkov, R.W. Heslop, R.J. Lycett, E.M. Forgan, C. Bowell, S. Strässle, Asger Bech Abrahamsen, M. Laver, C.D. Dewhurst, J. Kohlbrecher, J.L. Gavilano, J. Mesot, B. Keimer, A. Erb

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Abstract

We report on small-angle neutron scattering studies of the intrinsic vortex lattice (VL) structure in detwinned YBa2Cu3O7 at 2 K, and in fields up to 10.8 T. Because of the suppressed pinning to twin-domain boundaries, a new distorted hexagonal VL structure phase is stabilized at intermediate fields. It is separated from a low-field hexagonal phase of different orientation and distortion by a first-order transition at 2.0(2) T that is probably driven by Fermi surface effects. We argue that another first-order transition at 6.7(2) T, into a rhombic structure with a distortion of opposite sign, marks a crossover from a regime where Fermi surface anisotropy is dominant, to one where the VL structure and distortion is controlled by the order-parameter anisotropy.

Original language	English
Journal	Physical Review Letters
Volume	102
Issue number	9
Pages (from-to)	097001
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.102.097001
Publication status	Published - 2009

Bibliographical note

Copyright (2009) by the American Physical Society.

Keywords

Materials research
Superconducting materials for the energy sector

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White, J. S., Hinkov, V., Heslop, R. W., Lycett, R. J., Forgan, E. M., Bowell, C., Strässle, S., Abrahamsen, A. B., Laver, M., Dewhurst, C. D., Kohlbrecher, J., Gavilano, J. L., Mesot, J., Keimer, B., & Erb, A. (2009). Fermi Surface and Order Parameter Driven Vortex Lattice Structure Transitions in Twin-Free YBa2Cu3O7. Physical Review Letters, 102(9), 097001. https://doi.org/10.1103/PhysRevLett.102.097001

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title = "Fermi Surface and Order Parameter Driven Vortex Lattice Structure Transitions in Twin-Free YBa2Cu3O7",

abstract = "We report on small-angle neutron scattering studies of the intrinsic vortex lattice (VL) structure in detwinned YBa2Cu3O7 at 2 K, and in fields up to 10.8 T. Because of the suppressed pinning to twin-domain boundaries, a new distorted hexagonal VL structure phase is stabilized at intermediate fields. It is separated from a low-field hexagonal phase of different orientation and distortion by a first-order transition at 2.0(2) T that is probably driven by Fermi surface effects. We argue that another first-order transition at 6.7(2) T, into a rhombic structure with a distortion of opposite sign, marks a crossover from a regime where Fermi surface anisotropy is dominant, to one where the VL structure and distortion is controlled by the order-parameter anisotropy.",

keywords = "Materials research, Superconducting materials for the energy sector, Superledende materialer til energisektoren, Materialeforskning",

author = "J.S. White and V. Hinkov and R.W. Heslop and R.J. Lycett and E.M. Forgan and C. Bowell and S. Str{\"a}ssle and Abrahamsen, \{Asger Bech\} and M. Laver and C.D. Dewhurst and J. Kohlbrecher and J.L. Gavilano and J. Mesot and B. Keimer and A. Erb",

note = "Copyright (2009) by the American Physical Society.",

year = "2009",

doi = "10.1103/PhysRevLett.102.097001",

language = "English",

volume = "102",

pages = "097001",

journal = "Physical Review Letters",

issn = "0031-9007",

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White, JS, Hinkov, V, Heslop, RW, Lycett, RJ, Forgan, EM, Bowell, C, Strässle, S, Abrahamsen, AB, Laver, M, Dewhurst, CD, Kohlbrecher, J, Gavilano, JL, Mesot, J, Keimer, B & Erb, A 2009, 'Fermi Surface and Order Parameter Driven Vortex Lattice Structure Transitions in Twin-Free YBa2Cu3O7', Physical Review Letters, vol. 102, no. 9, pp. 097001. https://doi.org/10.1103/PhysRevLett.102.097001

TY - JOUR

T1 - Fermi Surface and Order Parameter Driven Vortex Lattice Structure Transitions in Twin-Free YBa2Cu3O7

AU - White, J.S.

AU - Hinkov, V.

AU - Heslop, R.W.

AU - Lycett, R.J.

AU - Forgan, E.M.

AU - Bowell, C.

AU - Strässle, S.

AU - Abrahamsen, Asger Bech

AU - Laver, M.

AU - Dewhurst, C.D.

AU - Kohlbrecher, J.

AU - Gavilano, J.L.

AU - Mesot, J.

AU - Keimer, B.

AU - Erb, A.

PY - 2009

Y1 - 2009

N2 - We report on small-angle neutron scattering studies of the intrinsic vortex lattice (VL) structure in detwinned YBa2Cu3O7 at 2 K, and in fields up to 10.8 T. Because of the suppressed pinning to twin-domain boundaries, a new distorted hexagonal VL structure phase is stabilized at intermediate fields. It is separated from a low-field hexagonal phase of different orientation and distortion by a first-order transition at 2.0(2) T that is probably driven by Fermi surface effects. We argue that another first-order transition at 6.7(2) T, into a rhombic structure with a distortion of opposite sign, marks a crossover from a regime where Fermi surface anisotropy is dominant, to one where the VL structure and distortion is controlled by the order-parameter anisotropy.

AB - We report on small-angle neutron scattering studies of the intrinsic vortex lattice (VL) structure in detwinned YBa2Cu3O7 at 2 K, and in fields up to 10.8 T. Because of the suppressed pinning to twin-domain boundaries, a new distorted hexagonal VL structure phase is stabilized at intermediate fields. It is separated from a low-field hexagonal phase of different orientation and distortion by a first-order transition at 2.0(2) T that is probably driven by Fermi surface effects. We argue that another first-order transition at 6.7(2) T, into a rhombic structure with a distortion of opposite sign, marks a crossover from a regime where Fermi surface anisotropy is dominant, to one where the VL structure and distortion is controlled by the order-parameter anisotropy.

KW - Materials research

KW - Superconducting materials for the energy sector

KW - Superledende materialer til energisektoren

KW - Materialeforskning

U2 - 10.1103/PhysRevLett.102.097001

DO - 10.1103/PhysRevLett.102.097001

M3 - Journal article

C2 - 19392554

SN - 0031-9007

VL - 102

SP - 097001

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

ER -

Fermi Surface and Order Parameter Driven Vortex Lattice Structure Transitions in Twin-Free YBa2Cu3O7

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