Abstract
Neutron scattering is used to study magnetic-field-induced ordering in the quasi-one-dimensional quantum spin-tube compound that in zero field has a nonmagnetic spin-liquid ground state. The experiments reveal an incommensurate chiral high-field phase stabilized by a geometric frustration of the magnetic interactions. The measured critical exponents and at point to an unusual subcritical scaling regime and may reflect the chiral nature of the quantum critical point.
- Received 1 December 2008
DOI:https://doi.org/10.1103/PhysRevB.79.060404
©2009 American Physical Society
Synopsis
A quantum phase transition for a spin liquid
Published 12 February 2009
Researchers report an unusual critical scaling regime in a material that goes from a spin liquid to a spiral magnet upon application of a magnetic field.
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