title: Temperature Dependence of the Half-Integer Magnetic Flux Quantum.
abstract: The temperature dependence of the half-integer magnetic flux quantum effect in thin-film tricrystal samples of the high-critical-temperature cuprate superconductor YBa(2)Cu(3)O(7-delta) was measured and found to persist from a temperature of 0.5 kelvin through a critical temperature of about 90 kelvin, with no change in total flux. This result implies that d-wave symmetry pairing predominates in this cuprate, with a small component of time-reversal symmetry breaking, if any, over the entire temperature range.
authors.affiliation: IBM T. J. Watson Research Center, Post Office Box 218, Yorktown Heights, NY 10598, USA. Department of Applied Physics, Stanford University, Stanford, CA 94305, USA.
authors.initials: JR
authors.lastname: Kirtley
authors.initials: CC
authors.lastname: Tsuei
authors.initials: KA
authors.lastname: Moler