14 papers
One-Particle Density Matrix Framework for Mode-Shell Correspondence: Characterizing Topology in Amorphous Higher-Order Topological Insulators
Miguel F. MartÃnez, Miguel F. Martínez, Lucien Jezequel +3
We present a framework for characterizing higher-order topological phases directly from the one-particle density matrix, without any reference to an underlying Hamiltonian. Our app…
Quantized Conductance through Surface States in High Quality Three-Dimensional Dirac Semimetal CdAs Nanowire/Nanoribbon p-n Junctions
Sungjin An, Zhuo Bin Siu, Vardan Kaladzhyan +8
We report the observation of quantized conductance in high-mobility three-dimensional Dirac semimetal CdAs nanowire and nanoribbon p-n junctions. By employing suspended dev…
Explicit equivalence between the spectral localizer and local Chern and winding markers
Lucien Jezequel, Jens H. Bardarson, Adolfo G. Grushin
Topological band insulators are classified using momentum-space topological invariants, such as Chern or winding numbers, when they feature translational symmetry. The lack of tran…
Information lattice approach to the metal-insulator transition
William Skoglund, Elton Giacomelli, Yiqi Yang +2
Correlation functions and correlation lengths are frequently used to describe phase transitions in quantum systems, but they require an explicit choice of observables. The recently…
Robust Correlation-Induced Localization Under Time-Reversal Symmetry Breaking
Bikram Pain, Sthitadhi Roy, Jens H. Bardarson +1
We study Anderson localization in a one-dimensional disordered system with long-range correlated hopping decaying as with complex hopping amplitudes that break time-rever…
Aharanov-Bohm oscillations and perfectly transmitted mode in amorphous topological insulator nanowires
Miguel F. MartÃnez, Adolfo G. Grushin, Jens H. Bardarson
Crystalline topological insulator nanowires with a magnetic flux threaded through their cross section display Aharanov-Bohm conductance oscillations. A characteristic of these osci…