Thermal Properties of a Particle Confined to a Parabolic Quantum Well in 2D Space with Conical Disclination

TL;DR

This paper investigates how a conical disclination affects the thermal and spectral properties of a charged particle in a quantum well under magnetic field, revealing topological influences on thermodynamics.

Contribution

It extends the Landau-Fock-Darwin spectrum to include conical disclinations and analyzes their impact on thermodynamic properties in a quantum well system.

Findings

Conical disclination modifies the energy level degeneracy.

The kink parameter influences thermodynamic quantities.

Magnetic field, temperature, and conicity interplay affects thermal responses.

Abstract

The thermal properties of a system, comprising of a spinless non-interacting charged particle in the presence of a constant external magnetic field and confined in a parabolic quantum well are studied. The focus has been on the effects of a topological defect, of the form of conical disclination, with regard to the thermodynamic properties of the system. We have obtained the modifications to the traditional Landau-Fock-Darwin spectrum in the presence of conical disclination. The effect of the conical kink on the degeneracy structure of the energy levels is investigated. The canonical formalism is used to compute various thermodynamic variables. The study shows an interplay between magnetic field, temperature and the degree of conicity by setting two scales for temperature corresponding to the frequency of the confining potential and the cyclotron frequency of external magnetic field. The kink parameter is found to affect the quantitative behaviour of the thermodynamic quantities. It plays a crucial role in the competition between the external magnetic field and temperature in fixing the values of the thermal response functions. This study provides an important motivation for studying similar systems, however with non trivial interactions in the presence of topological defects.