Magnetic Instability on the Surface of Topological Insulators

Abstract

Gapless surface states that are protected by time reversal symmetry and charge conservation are among the manifestations of 3D topological insulators. In this work we study how electron-electron interaction may lead to spontaneous breaking of time reversal symmetry on surfaces of such insulators. We find that a critical interaction strength exists, above which the surface is unstable to spontaneous formation of magnetization, and study the dependence of this critical interaction strength on temperature and chemical potential.

4 pages, 3 figures

References in corpus (2)

• First direct observation of Spin-textures in Topological Insulators : Spin-resolved ARPES as a probe of topological quantum spin Hall effect and Berry's phase
• Unexpected mass acquisition of Dirac fermions at the quantum phase transition of a topological insulator

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• Spin Response of Electrons on the Surface of a Topological Insulator
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• A Strongly-Interacting Dirac Liquid on the Surface of a Topological Kondo Insulator
• Designer Meron Lattice on the Surface of a Topological Insulator
• Magic angle conditions for twisted 3D topological insulators
• Gapless Topological Superconductors - Model Hamiltonian and Realization
• Topological spin-plasma waves
• Cancellation of quantum anomalies and bosonization of three-dimensional time-reversal symmetric topological insulators
• Spontaneous gap generation on the surface of weakly interacting topological insulators using nonmagnetic impurities
• Strong Coupling Expansion in a Correlated Three-Dimensional Topological Insulator
• Interaction effects on almost flat surface bands in topological insulators
• Interacting and fractional topological insulators via the ${\mathbb{Z}}_2$ chiral anomaly
• Density Waves Instability and a Skyrmion Lattice on the Surface of Strong Topological Insulators
• Odd-frequency superconductivity induced in topological insulators with and without hexagonal warping
• Interaction effects in a 1D flat band at a topological crystalline step edge
• Electrified magnetic catalysis in three-dimensional topological insulators
• An STM perspective on hexaborides: Surface states of the Kondo insulator SmB${}_6$
• 2D compressibility of surface states on 3D topological insulators
• Prediction of at topological $p+ip$ excitonic insulator with parity anomaly
• Topological hybrid electron-hole Cooper pairing
• Surface topological quantum criticality: Conformal manifolds and Discrete Strong Coupling Fixed Points