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

Jonathan White; V Hinkov; RW Heslop; Richard Lycett; Edward Forgan; C Bowell; S Straessle; AB Abrahamsen; M Laver; CD Dewhurst; J Kohlbrecher; JL 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

Jonathan White, V Hinkov, RW Heslop, Richard Lycett, Edward Forgan, C Bowell, S Straessle, AB Abrahamsen, M Laver, CD Dewhurst, J Kohlbrecher, JL Gavilano, J Mesot, B Keimer, A Erb

Physics and Astronomy

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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
Pages (from-to)	097001
Number of pages	1
Journal	Physical Review Letters
Volume	102
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.102.097001
Publication status	Published - 1 Mar 2009

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White, J., Hinkov, V., Heslop, RW., Lycett, R., Forgan, E., Bowell, C., Straessle, 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, 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.",

author = "Jonathan White and V Hinkov and RW Heslop and Richard Lycett and Edward Forgan and C Bowell and S Straessle and AB Abrahamsen and M Laver and CD Dewhurst and J Kohlbrecher and JL Gavilano and J Mesot and B Keimer and A Erb",

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White, J, Hinkov, V, Heslop, RW, Lycett, R, Forgan, E, Bowell, C, Straessle, 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, Jonathan

AU - Hinkov, V

AU - Heslop, RW

AU - Lycett, Richard

AU - Forgan, Edward

AU - Bowell, C

AU - Straessle, S

AU - Abrahamsen, AB

AU - Laver, M

AU - Dewhurst, CD

AU - Kohlbrecher, J

AU - Gavilano, JL

AU - Mesot, J

AU - Keimer, B

AU - Erb, A

PY - 2009/3/1

Y1 - 2009/3/1

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.

U2 - 10.1103/PhysRevLett.102.097001

DO - 10.1103/PhysRevLett.102.097001

M3 - Article

C2 - 19392554

SN - 1079-7114

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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