Neutron Scattering Study of Quantum Phase Transitions in Integral Spin Chains

Details Neutron Scattering Study of Quantum Phase Transitions in Integral Spin Chains Neutron Scattering Study of Quantum Phase Transitions in Integral Spin Chains

2005-07-22

arxiv.org/abs/cond-mat/0507534v1

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 9 figures, semi-plenary lecture at the LT24 conference, Orlando, Florida, August 2005

Scientific paper

10.1063/1.2355046

Quite a few low-dimensional magnets are quantum-disordered ``spin liquids'' with a characteristic gap in the magnetic excitation spectrum. Among these are antiferromagnetic chains of integer quantum spins. Their generic feature are long-lived massive (gapped) excitations (magnons) that are subject to Zeeman splitting in external magnetic fields. The gap in one of the magnon branches decreases with field, driving a soft-mode quantum phase transition. The system then enters a qualitatively new high-field phase. The actual properties at high fields, particularly the spin dynamics, critically depend on the system under consideration. Recent neutron scattering studies of organometallic polymer crystals NDMAP (Haldane spin chains with anisotropy) and NTENP (dimerized S=1 chains) revealed rich and unique physics.

Affiliated with

Also associated with

No associations

Rating

Neutron Scattering Study of Quantum Phase Transitions in Integral Spin Chains does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Neutron Scattering Study of Quantum Phase Transitions in Integral Spin Chains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neutron Scattering Study of Quantum Phase Transitions in Integral Spin Chains will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-706558