4 papers
Quantum Measurement Operations with Nanomagnets and SQUIDs
M. Dube, P. C. E. Stamp
The low-energy behaviour of 2 coupled nanomagnets or 2 coupled SQUIDs, interacting with their environment, can be described by the model of a ``Pair or Interacting Spins Coupled to…
Domain Wall Motion in the Presence of Nuclear Spins
M. Dube, P. C. E. Stamp
We investigate the motion of a domain wall in the presence of a dynamical hyperfine field. At temperature T high compared to the hyperfine coupling, the nuclear spins create a spat…
Effects of Phonons and Nuclear Spins on the Tunneling of a Domain Wall
M. Dube, P. C. E. Stamp
We consider the quantum dynamics of a magnetic domain wall at low temperatures, where dissipative couplings to magnons and electrons are very small. The wall motion is then determi…
A pair of interacting spins coupled to an environmental sea: dissipation and mutual decoherence
M. Dube, P. C. E. Stamp
We consider the quantum dynamics of two spin-1/2 systems, each coupled to a bath of oscillators, so that a bath-mediated coupling is generated between the spins. We find that the i…