Direct evidence for an intrinsic square vortex lattice in the overdoped high-Tc superconductor La1.83Sr0.17CuO4+δ

R  Gilardi; J  Mesot; A  Drew; U  Divakar; S L  Lee; E M  Forgan; O  Zaharko; K  Conder; V K  Aswal; C D  Dewhurst; R  Cubitt; N  Momono; M  Oda

doi:10.1103/PhysRevLett.88.217003

Direct evidence for an intrinsic square vortex lattice in the overdoped high-T_c superconductor La_1.83Sr_0.17CuO_4+δ

R Gilardi, J Mesot, A Drew, U Divakar, S L Lee, E M Forgan, O Zaharko, K Conder, V K Aswal, C D Dewhurst, R Cubitt, N Momono, M Oda

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Abstract

We report here the first direct observations of a well ordered vortex lattice in the bulk of a La_2-xSr_xCuO_4+δ single crystal (slightly overdoped, x=0.17 ). Our small angle neutron scattering investigation of the mixed phase reveals a crossover from triangular to square coordination with increasing magnetic field. The existence of an intrinsic square vortex lattice has never been observed in high-temperature superconductors and is indicative of the coupling of the vortex lattice to a source of anisotropy, such as those provided by a d -wave order parameter or the presence of stripes.

Original language	English
Pages (from-to)	217003
Number of pages	4
Journal	Physical Review Letters
Volume	88
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.88.217003
Publication status	Published - 27 May 2002

Keywords

HIGH-TEMPERATURE SUPERCONDUCTORS
FLUX-LINE-LATTICE
D-WAVE SUPERCONDUCTORS
ELECTRONIC-STRUCTURE
UNIAXIAL SUPERCONDUCTORS
NEUTRON-SCATTERING
YBA2CU3O7
TRANSITION
VORTICES
SYMMETRY

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10.1103/PhysRevLett.88.217003

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Gilardi, R., Mesot, J., Drew, A., Divakar, U., Lee, S. L., Forgan, E. M., Zaharko, O., Conder, K., Aswal, V. K., Dewhurst, C. D., Cubitt, R., Momono, N., & Oda, M. (2002). Direct evidence for an intrinsic square vortex lattice in the overdoped high-T_c superconductor La_1.83Sr_0.17CuO_4+δ. Physical Review Letters, 88(21), 217003. https://doi.org/10.1103/PhysRevLett.88.217003

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title = "Direct evidence for an intrinsic square vortex lattice in the overdoped high-Tc superconductor La1.83Sr0.17CuO4+δ",

abstract = "We report here the first direct observations of a well ordered vortex lattice in the bulk of a La2-xSrxCuO4+δ single crystal (slightly overdoped, x=0.17 ). Our small angle neutron scattering investigation of the mixed phase reveals a crossover from triangular to square coordination with increasing magnetic field. The existence of an intrinsic square vortex lattice has never been observed in high-temperature superconductors and is indicative of the coupling of the vortex lattice to a source of anisotropy, such as those provided by a d -wave order parameter or the presence of stripes.",

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doi = "10.1103/PhysRevLett.88.217003",

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T1 - Direct evidence for an intrinsic square vortex lattice in the overdoped high-Tc superconductor La1.83Sr0.17CuO4+δ

AU - Gilardi, R

AU - Mesot, J

AU - Drew, A

AU - Divakar, U

AU - Lee, S L

AU - Forgan, E M

AU - Zaharko, O

AU - Conder, K

AU - Aswal, V K

AU - Dewhurst, C D

AU - Cubitt, R

AU - Momono, N

AU - Oda, M

PY - 2002/5/27

Y1 - 2002/5/27

N2 - We report here the first direct observations of a well ordered vortex lattice in the bulk of a La2-xSrxCuO4+δ single crystal (slightly overdoped, x=0.17 ). Our small angle neutron scattering investigation of the mixed phase reveals a crossover from triangular to square coordination with increasing magnetic field. The existence of an intrinsic square vortex lattice has never been observed in high-temperature superconductors and is indicative of the coupling of the vortex lattice to a source of anisotropy, such as those provided by a d -wave order parameter or the presence of stripes.

AB - We report here the first direct observations of a well ordered vortex lattice in the bulk of a La2-xSrxCuO4+δ single crystal (slightly overdoped, x=0.17 ). Our small angle neutron scattering investigation of the mixed phase reveals a crossover from triangular to square coordination with increasing magnetic field. The existence of an intrinsic square vortex lattice has never been observed in high-temperature superconductors and is indicative of the coupling of the vortex lattice to a source of anisotropy, such as those provided by a d -wave order parameter or the presence of stripes.

KW - HIGH-TEMPERATURE SUPERCONDUCTORS

KW - FLUX-LINE-LATTICE

KW - D-WAVE SUPERCONDUCTORS

KW - ELECTRONIC-STRUCTURE

KW - UNIAXIAL SUPERCONDUCTORS

KW - NEUTRON-SCATTERING

KW - YBA2CU3O7

KW - TRANSITION

KW - VORTICES

KW - SYMMETRY

UR - https://www.scopus.com/pages/publications/0037182495

U2 - 10.1103/PhysRevLett.88.217003

DO - 10.1103/PhysRevLett.88.217003

M3 - Article

SN - 0031-9007

VL - 88

SP - 217003

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

ER -

Direct evidence for an intrinsic square vortex lattice in the overdoped high-T_c superconductor La_1.83Sr_0.17CuO_4+δ

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Keywords

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