Edge States for the Magnetic Laplacian in Domains with Smooth Boundary

We are interested in the spectral properties of the magnetic Schrodinger operator $H_\varepsilon$ in a domain $\Omega \subset \mathbb{R}^2$ with compact boundary and with magnetic field of intensity $\varepsilon^{-2}$. We impose Dirichlet boundary conditions on $\partial\Omega$. Our main focus is the existence and description of the so-called \textit{edge states}, namely eigenfunctions for $H_{\varepsilon}$ whose mass is localized at scale $\varepsilon$ along the boundary $\partial\Omega$. When the intensity of the magnetic field is large (i.e. $\varepsilon <<1$), we show that such edge states exist. Furthermore, we give a detailed description of their localization close to the boundary $\partial\Omega$, as well as how their mass is distributed along it. From this result, we also infer asymptotic formulas for the eigenvalues of $H_\varepsilon$.

[1]  B. Bernevig Topological Insulators and Topological Superconductors , 2013 .

[2]  C. Fefferman,et al.  Edge States of continuum Schroedinger operators for sharply terminated honeycomb structures , 2018 .

[3]  L. Grafakos Classical Fourier Analysis , 2010 .

[4]  E. M. Lifshitz,et al.  Quantum mechanics: Non-relativistic theory, , 1959 .

[5]  Kristian Kirsch,et al.  Methods Of Modern Mathematical Physics , 2016 .

[6]  B. Simon,et al.  Schrödinger operators with magnetic fields. I. general interactions , 1978 .

[7]  D. Thouless,et al.  Quantized Hall conductance in a two-dimensional periodic potential , 1992 .

[8]  B. Helffer,et al.  On the semi-classical analysis of the groundstate energy of the Dirichlet Pauli operator , 2016 .

[9]  B. Simon,et al.  Schrödinger operators with magnetic fields , 1981 .

[10]  B. Helffer,et al.  Sharp trace asymptotics for a class of 2D-magnetic operators , 2011, 1108.0777.

[11]  Grégoire Allaire,et al.  BLOCH WAVE HOMOGENIZATION AND SPECTRAL ASYMPTOTIC ANALYSIS , 1998 .

[12]  S. Girvin,et al.  The Quantum Hall Effect , 1987 .

[13]  Eigenvalue clusters of the Landau Hamiltonian in the exterior of a compact domain , 2007, 0707.4297.

[14]  B. Halperin Quantized Hall conductance, current carrying edge states, and the existence of extended states in a two-dimensional disordered potential , 1982 .

[15]  Bernard Helffer,et al.  Spectral Methods in Surface Superconductivity , 2010 .

[16]  Charles L Fefferman,et al.  Topologically protected states in one-dimensional continuous systems and Dirac points , 2014, Proceedings of the National Academy of Sciences.

[17]  Haldane,et al.  Model for a quantum Hall effect without Landau levels: Condensed-matter realization of the "parity anomaly" , 1988, Physical review letters.

[18]  C. Fefferman,et al.  Honeycomb Schrödinger Operators in the Strong Binding Regime , 2016, 1610.04930.

[19]  Robert B. Laughlin,et al.  Quantized Hall conductivity in two-dimensions , 1981 .

[20]  Mark S. C. Reed,et al.  Method of Modern Mathematical Physics , 1972 .

[21]  A. Iwatsuka Examples of Absolutely Continuous Schrodinger Operators in Magnetic Fields , 1985 .

[22]  Michael I. Weinstein,et al.  Honeycomb Lattice Potentials and Dirac Points , 2012, 1202.3839.

[23]  G. M. Graf,et al.  On the Extended Nature of Edge States of Quantum Hall Hamiltonians , 1999, math-ph/9903014.

[24]  Tosio Kato Perturbation theory for linear operators , 1966 .

[25]  R. Frank On the asymptotic number of edge states for magnetic Schrödinger operators , 2006, math-ph/0603046.