A1 Refereed original research article in a scientific journal
Absence of spontaneous magnetism associated with a possible time-reversal symmetry breaking state beneath the surface of (110)-oriented YBa2Cu3O7-delta superconducting films
Authors: Saadaoui H, Salman Z, Prokscha T, Suter A, Huhtinen H, Paturi P, Morenzoni E
Publisher: AMER PHYSICAL SOC
Publication year: 2013
Journal: Physical Review B
Journal name in source: PHYSICAL REVIEW B
Journal acronym: PHYS REV B
Article number: ARTN 180501
Number in series: 18
Volume: 88
Issue: 18
Number of pages: 5
ISSN: 1098-0121
DOI: https://doi.org/10.1103/PhysRevB.88.180501
Abstract
We report the results of a search for spontaneous magnetism due to a time-reversal symmetry breaking phase in the superconducting state of (110)-oriented YBa2Cu3O7-delta films, expected near the surface in this geometry. Zero field and weak transverse field measurements performed using the low-energy muon spin rotation technique with muons implanted a few nm inside optimally doped YBa2Cu3O7-delta-(110) films show no appearance of spontaneous magnetic fields below the superconducting temperature down to 2.9 K. Our results give an upper limit of similar to 0.02 mT for putative spontaneous internal fields.
We report the results of a search for spontaneous magnetism due to a time-reversal symmetry breaking phase in the superconducting state of (110)-oriented YBa2Cu3O7-delta films, expected near the surface in this geometry. Zero field and weak transverse field measurements performed using the low-energy muon spin rotation technique with muons implanted a few nm inside optimally doped YBa2Cu3O7-delta-(110) films show no appearance of spontaneous magnetic fields below the superconducting temperature down to 2.9 K. Our results give an upper limit of similar to 0.02 mT for putative spontaneous internal fields.
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