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

Research output: Contribution to journal › Article › peer-review

111 Citations (Scopus)

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

Access to Document

10.1103/PhysRevLett.88.217003

Cite this

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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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

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

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