Antiferromagnetism in the vortex cores of YBa2Cu3O7−δ

V. F. Mitrović; E. E. Sigmund; W. P. Halperin; A. P. Reyes; P. Kuhns; W. G. Moulton

doi:10.1103/PhysRevB.67.220503

Antiferromagnetism in the vortex cores of YBa₂Cu₃O_7−δ

V. F. Mitrović, E. E. Sigmund, W. P. Halperin, A. P. Reyes, P. Kuhns, W. G. Moulton

Physics and Astronomy

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

34 Scopus citations

Abstract

We report spatially resolved nuclear-magnetic-resonance measurements on a high-temperature superconductor that indicate the presence of correlated antiferromagnetic fluctuations in the vortex core. The nuclear-spin-lattice relaxation rate 1/¹⁷T₁ of planar ¹⁷O, in near-optimally doped YB₂Cu₃O_7−δ, was measured. Outside of the core, (¹⁷T₁T)⁻¹ is independent of temperature consistent with theoretical predictions for a d-wave superconductor. In the vortex core, (¹⁷T₁T)⁻¹ increases with decreasing temperature following an antiferromagnetic Curie-Weiss law.

Original language	English (US)
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	67
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.67.220503
State	Published - Jun 17 2003

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "We report spatially resolved nuclear-magnetic-resonance measurements on a high-temperature superconductor that indicate the presence of correlated antiferromagnetic fluctuations in the vortex core. The nuclear-spin-lattice relaxation rate 1/17T1 of planar 17O, in near-optimally doped YB2Cu3O7−δ, was measured. Outside of the core, (17T1T)−1 is independent of temperature consistent with theoretical predictions for a d-wave superconductor. In the vortex core, (17T1T)−1 increases with decreasing temperature following an antiferromagnetic Curie-Weiss law.",

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AU - Mitrović, V. F.

AU - Sigmund, E. E.

AU - Halperin, W. P.

AU - Reyes, A. P.

AU - Kuhns, P.

AU - Moulton, W. G.

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