Quantum Phase Transition of a Magnet in a Spin Bath
METADATA ONLY
Loading...
Author / Producer
Date
2005
Publication Type
Journal Article
ETH Bibliography
yes
Citations
Altmetric
METADATA ONLY
Data
Rights / License
Abstract
The excitation spectrum of a model magnetic system, LiHoF₄, was studied with the use of neutron spectroscopy as the system was tuned to its quantum critical point by an applied magnetic field. The electronic mode softening expected for a quantum phase transition was forestalled by hyperfine coupling to the nuclear spins. We found that interactions with the nuclear spin bath controlled the length scale over which the excitations could be entangled. This generic result places a limit on our ability to observe intrinsic electronic quantum criticality.
Permanent link
Publication status
published
External links
Editor
Book title
Journal / series
Volume
308 (5720)
Pages / Article No.
389 - 392
Publisher
AAAS
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Organisational unit
Notes
Received for publication 6 December 2004, Accepted for publication 23 February 2005.