Shape and phase transitions in quantum-Hall skyrmions

Rao, Madan ; Sengupta, Surajit ; Shankar, R. (1997) Shape and phase transitions in quantum-Hall skyrmions Physica E: Low-dimensional Systems and Nanostructures, 1 (1-4). pp. 54-58. ISSN 1386-9477

Full text not available from this repository.

Official URL:

Related URL:


The shape deformability of quantum-Hall skyrmions leads to a rich phase diagram in the ν-g space. We study the long-wavelength physics of a collection of interacting skyrmions using a nonlinear sigma model. At zero temperature the ground state is crystalline with generalized Nèel order. As a function of the filling factor ν, the skyrmion crystal undergoes a sequence of structural transitions driven by a change of shape of the individual skyrmions. Quantum effects lead to melting and orientational disordering transitions at high and low skyrmion densities, respectively. We show that moment of inertia of skyrmions also arises from the shape deformability of the skyrmions.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:QHE; Skyrmions; Crystal; Structural Transitions
ID Code:56563
Deposited On:24 Aug 2011 11:07
Last Modified:24 Aug 2011 11:07

Repository Staff Only: item control page