Square vortex lattice at anomalously low magnetic fields in electron-doped Nd1.85Ce0.15CuO4

R  Gilardi; J  Mesot; S P  Brown; E M  Forgan; A  Drew; S L  Lee; R  Cubitt; C D  Dewhurst; T  Uefuji; K  Yamada

doi:10.1103/PhysRevLett.93.217001

Square vortex lattice at anomalously low magnetic fields in electron-doped Nd1.85Ce0.15CuO4

R Gilardi, J Mesot, S P Brown, E M Forgan, A Drew, S L Lee, R Cubitt, C D Dewhurst, T Uefuji, K Yamada

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

Abstract

We report here on the first direct observations of the vortex lattice in the bulk of electron-doped Nd1.85Ce0.15CuO4 single crystals. Using small-angle neutron scattering, we have observed a square vortex lattice with the nearest neighbors oriented at 45degrees from the Cu-O bond direction, which is consistent with theories based on the d-wave superconducting gap. However, the square symmetry persists down to unusually low magnetic fields. Moreover, the diffracted intensity from the vortex lattice is found to decrease rapidly with increasing magnetic field.

Original language	English
Article number	217001
Number of pages	4
Journal	Physical Review Letters
Volume	93
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.93.217001
Publication status	Published - 15 Nov 2004

Keywords

ANGLE NEUTRON-SCATTERING
D-WAVE SUPERCONDUCTORS
CUPRATE SUPERCONDUCTORS
TEMPERATURE-DEPENDENCE
PENETRATION DEPTH
PAIRING SYMMETRY
UNCONVENTIONAL SUPERCONDUCTORS
FLUX LATTICES
STATE
TRANSITION

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10.1103/PhysRevLett.93.217001

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title = "Square vortex lattice at anomalously low magnetic fields in electron-doped Nd1.85Ce0.15CuO4",

abstract = "We report here on the first direct observations of the vortex lattice in the bulk of electron-doped Nd1.85Ce0.15CuO4 single crystals. Using small-angle neutron scattering, we have observed a square vortex lattice with the nearest neighbors oriented at 45degrees from the Cu-O bond direction, which is consistent with theories based on the d-wave superconducting gap. However, the square symmetry persists down to unusually low magnetic fields. Moreover, the diffracted intensity from the vortex lattice is found to decrease rapidly with increasing magnetic field.",

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author = "R Gilardi and J Mesot and Brown, {S P} and Forgan, {E M} and A Drew and Lee, {S L} and R Cubitt and Dewhurst, {C D} and T Uefuji and K Yamada",

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doi = "10.1103/PhysRevLett.93.217001",

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AU - Gilardi, R

AU - Mesot, J

AU - Brown, S P

AU - Forgan, E M

AU - Drew, A

AU - Lee, S L

AU - Cubitt, R

AU - Dewhurst, C D

AU - Uefuji, T

AU - Yamada, K

PY - 2004/11/15

Y1 - 2004/11/15

N2 - We report here on the first direct observations of the vortex lattice in the bulk of electron-doped Nd1.85Ce0.15CuO4 single crystals. Using small-angle neutron scattering, we have observed a square vortex lattice with the nearest neighbors oriented at 45degrees from the Cu-O bond direction, which is consistent with theories based on the d-wave superconducting gap. However, the square symmetry persists down to unusually low magnetic fields. Moreover, the diffracted intensity from the vortex lattice is found to decrease rapidly with increasing magnetic field.

AB - We report here on the first direct observations of the vortex lattice in the bulk of electron-doped Nd1.85Ce0.15CuO4 single crystals. Using small-angle neutron scattering, we have observed a square vortex lattice with the nearest neighbors oriented at 45degrees from the Cu-O bond direction, which is consistent with theories based on the d-wave superconducting gap. However, the square symmetry persists down to unusually low magnetic fields. Moreover, the diffracted intensity from the vortex lattice is found to decrease rapidly with increasing magnetic field.

KW - ANGLE NEUTRON-SCATTERING

KW - D-WAVE SUPERCONDUCTORS

KW - CUPRATE SUPERCONDUCTORS

KW - TEMPERATURE-DEPENDENCE

KW - PENETRATION DEPTH

KW - PAIRING SYMMETRY

KW - UNCONVENTIONAL SUPERCONDUCTORS

KW - FLUX LATTICES

KW - STATE

KW - TRANSITION

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DO - 10.1103/PhysRevLett.93.217001

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JF - Physical Review Letters

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M1 - 217001

ER -

Square vortex lattice at anomalously low magnetic fields in electron-doped Nd1.85Ce0.15CuO4

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Keywords

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