title: Hysteresis and magnetization jumps in the T=0 dynamics of spin glasses.
abstract: We present results from Monte Carlo simulations of hysteresis in the zero-temperature ( T=0 ) dynamics of the Sherrington-Kirkpatrick spin glass model. We study the statistics of magnetization-jumps (denoted as Deltam ) in response to a time-dependent magnetic field H (t) , which increases or decreases with constant increments Delta as H(t)-->H(t)+/-Delta . In particular, we focus on the field dependence of the Deltam -distribution function P(Deltam,H) . We formulate arguments to understand the variation of P ( Deltam,H ) along the hysteresis loop in the weak-disorder limit.
authors.affiliation: Department of Physics, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India.
authors.forename: Varsha
authors.initials: V
authors.lastname: Banerjee
authors.forename: Subir K
authors.initials: SK
authors.lastname: Das
authors.forename: Sanjay
authors.initials: S
authors.lastname: Puri