144 citations · 257 across the 4 of their papers we have counts for
11 papers
Hysteretic memory effects in disordered magnets
Helmut G. Katzgraber, Gergely T. Zimanyi
We study the return point as well as the complementary point memory effects numerically with paradigmatic models for random magnets and show that already simple systems with Ising…
Anisotropy Dependence of Irreversible Switching in Fe/SmCo and FeNi/FePt Exchange Spring Magnet Films
Joseph E. Davies, Olav Hellwig, Eric E. Fullerton +4
Magnetization reversal in exchange-spring magnet films has been investigated by a First Order Reversal Curve (FORC) technique and vector magnetometry. In Fe/epitaxial-SmCo films, t…
Reversal-field memory in magnetic hysteresis
H. G. Katzgraber, F. Pazmandi, C. R. Pike +4
We report results demonstrating a singularity in the hysteresis of magnetic materials, the reversal-field memory effect. This effect creates a nonanalyticity in the magnetization c…
Reversal-Field Memory in the Hysteresis of Spin Glasses
H. G. Katzgraber, F. Pazmandi, C. R. Pike +4
We report a novel singularity in the hysteresis of spin glasses, the reversal-field memory effect, which creates a non-analyticity in the magnetization curves at a particular point…
Is the Multichannel Kondo Model Appropriate to Describe the Single Electron Transistor?
Gergely Zarand, Gergely T. Zimanyi, Frank Wilhelm
We investigate the low-temperature dynamics of single electron boxes and transistors close to their degeneracy point using renormalization group methods. We show that intermode sca…
Quantum Fluctuations and Dissipation in Thin Superconducting Wires
A. D. Zaikin, D. S. Golubev, A. van Otterlo +1
We investigate quantum fluctuations in thin superconducting wires. We demonstrate that quantum phase slips dominate the system behavior at low temperatures and are well in the meas…