Title:	Shape and phase transitions in quantum-Hall skyrmions
Authors:	Rao, Madan Sengupta, Surajit Shankar, R.
Keywords:	qhe skyrmions crystal , structural transitions
Issue Date:	1997
Publisher:	Elsevier
Citation:	Physica E, 1997, V.1, p54-58
Abstract:	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.
Description:	Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
URI:	http://hdl.handle.net/2289/4596
ISSN:	1386-9477
Alternative Location:	http://dx.doi.org/10.1016/S1386-9477(97)00010-6 http://adsabs.harvard.edu/abs/1998PhyE....1...54R
Copyright:	1997, Elsevier
Appears in Collections:	Research Papers (TP)

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