title: Dephasing of atomic tunneling by nuclear quadrupoles.
abstract: Recent experiments revealed a most surprising magnetic-field dependence of coherent echoes in amorphous solids. We show that a novel dephasing mechanism involving nuclear quadrupole moments is the origin of the observed phenomena.
authors.affiliation: Université Bordeaux 1, CPMOH, 351 cours de la Libération, 33405 Talence, France.
authors.forename: Alois
authors.initials: A
authors.lastname: Würger
authors.forename: Andreas
authors.initials: A
authors.lastname: Fleischmann
authors.forename: Christian
authors.initials: C
authors.lastname: Enss