Small-angle neutron scattering study of the vortex lattice in superconducting LuNi2 B2 C

J. M. Densmore; P. Das; K. Rovira; T. D. Blasius; L. Debeer-Schmitt; N. Jenkins; D. Mc K. Paul; C. D. Dewhurst; S. L. Bud'Ko; P. C. Canfield; M. R. Eskildsen

doi:10.1103/PhysRevB.79.174522

Small-angle neutron scattering study of the vortex lattice in superconducting LuNi2 B2 C

J. M. Densmore, P. Das, K. Rovira, T. D. Blasius, L. Debeer-Schmitt, N. Jenkins, D. Mc K. Paul, C. D. Dewhurst, S. L. Bud'Ko, P. C. Canfield, M. R. Eskildsen

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Abstract

We present studies of the magnetic field distribution around the vortices in LuNi2 B2 C. Small-angle neutron scattering measurements of the vortex lattice (VL) in this material were extended to unprecedentedly large values of the scattering vector q, obtained both by using high magnetic fields to decrease the VL spacing and by using higher order reflections. A square VL, oriented with the nearest-neighbor direction along the crystalline [110] direction, was observed up to the highest measured field. The first-order VL form factor, | F (q10) |, was found to decrease exponentially with increasing magnetic field. Measurements of the higher-order form factors, | F (qhk) |, reveal a significant in-plane anisotropy and also allow for a real-space reconstruction of the VL field distribution.

Original language	English
Article number	174522
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	79
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.79.174522
State	Published - May 1 2009
Externally published	Yes

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Densmore, J. M., Das, P., Rovira, K., Blasius, T. D., Debeer-Schmitt, L., Jenkins, N., Paul, D. M. K., Dewhurst, C. D., Bud'Ko, S. L., Canfield, P. C., & Eskildsen, M. R. (2009). Small-angle neutron scattering study of the vortex lattice in superconducting LuNi2 B2 C. Physical Review B - Condensed Matter and Materials Physics, 79(17), Article 174522. https://doi.org/10.1103/PhysRevB.79.174522

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title = "Small-angle neutron scattering study of the vortex lattice in superconducting LuNi2 B2 C",

abstract = "We present studies of the magnetic field distribution around the vortices in LuNi2 B2 C. Small-angle neutron scattering measurements of the vortex lattice (VL) in this material were extended to unprecedentedly large values of the scattering vector q, obtained both by using high magnetic fields to decrease the VL spacing and by using higher order reflections. A square VL, oriented with the nearest-neighbor direction along the crystalline [110] direction, was observed up to the highest measured field. The first-order VL form factor, | F (q10) |, was found to decrease exponentially with increasing magnetic field. Measurements of the higher-order form factors, | F (qhk) |, reveal a significant in-plane anisotropy and also allow for a real-space reconstruction of the VL field distribution.",

author = "Densmore, \{J. M.\} and P. Das and K. Rovira and Blasius, \{T. D.\} and L. Debeer-Schmitt and N. Jenkins and Paul, \{D. Mc K.\} and Dewhurst, \{C. D.\} and Bud'Ko, \{S. L.\} and Canfield, \{P. C.\} and Eskildsen, \{M. R.\}",

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doi = "10.1103/PhysRevB.79.174522",

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AU - Densmore, J. M.

AU - Das, P.

AU - Rovira, K.

AU - Blasius, T. D.

AU - Debeer-Schmitt, L.

AU - Jenkins, N.

AU - Paul, D. Mc K.

AU - Dewhurst, C. D.

AU - Bud'Ko, S. L.

AU - Canfield, P. C.

AU - Eskildsen, M. R.

PY - 2009/5/1

Y1 - 2009/5/1

N2 - We present studies of the magnetic field distribution around the vortices in LuNi2 B2 C. Small-angle neutron scattering measurements of the vortex lattice (VL) in this material were extended to unprecedentedly large values of the scattering vector q, obtained both by using high magnetic fields to decrease the VL spacing and by using higher order reflections. A square VL, oriented with the nearest-neighbor direction along the crystalline [110] direction, was observed up to the highest measured field. The first-order VL form factor, | F (q10) |, was found to decrease exponentially with increasing magnetic field. Measurements of the higher-order form factors, | F (qhk) |, reveal a significant in-plane anisotropy and also allow for a real-space reconstruction of the VL field distribution.

AB - We present studies of the magnetic field distribution around the vortices in LuNi2 B2 C. Small-angle neutron scattering measurements of the vortex lattice (VL) in this material were extended to unprecedentedly large values of the scattering vector q, obtained both by using high magnetic fields to decrease the VL spacing and by using higher order reflections. A square VL, oriented with the nearest-neighbor direction along the crystalline [110] direction, was observed up to the highest measured field. The first-order VL form factor, | F (q10) |, was found to decrease exponentially with increasing magnetic field. Measurements of the higher-order form factors, | F (qhk) |, reveal a significant in-plane anisotropy and also allow for a real-space reconstruction of the VL field distribution.

UR - https://www.scopus.com/pages/publications/67449102371

U2 - 10.1103/PhysRevB.79.174522

DO - 10.1103/PhysRevB.79.174522

M3 - Article

AN - SCOPUS:67449102371

SN - 1098-0121

VL - 79

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 17

M1 - 174522

ER -

Small-angle neutron scattering study of the vortex lattice in superconducting LuNi2 B2 C

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