78310 20200103141020.0 doi 10.7566/JPSJ.87.034701 sideral 104656 ART-2018-104656 eng Hsu, H.C. Conductance fluctuations in disordered 2D topological insulator wires: From quantum spin-hall to ordinary phases 2018 Access copy available to the general public Unrestricted Impurities and defects are ubiquitous in topological insulators (TIs) and thus understanding the effects of disorder on electronic transport is important. We calculate the distribution of the random conductance fluctuations P(G) of disordered 2D TI wires modeled by the Bernevig-Hughes-Zhang (BHZ) Hamiltonian with realistic parameters. As we show, the disorder drives the TIs into different regimes: metal (M), quantum spin-Hall insulator (QSHI), and ordinary insulator (OI). By varying the disorder strength and Fermi energy, we calculate analytically and numerically P(G) across the entire phase diagram. The conductance fluctuations follow the statistics of the unitary universality class ß = 2. At strong disorder and high energy, however, the size of the fluctuations dG reaches the universal value of the orthogonal symmetry class (ß = 1). At the QSHI-M and QSHI-OI crossovers, the interplay between edge and bulk states plays a key role in the statistical properties of the conductance. info:eu-repo/grantAgreement/ES/MCIU/Subprograma Estatal de Movilidad 2013–2016-PRX16-00166 info:eu-repo/grantAgreement/ES/MINECO/FIS2015-65078-C2-2-P info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 1.57 2018 PHYSICS, MULTIDISCIPLINARY 42 / 81 = 0.519 2018 Q3 T2 0.588 2018 Physics and Astronomy (miscellaneous) 2018 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Kleftogiannis, I. Guo, G.Y. (orcid)0000-0002-8726-7212 Gopar, V.A. Universidad de Zaragoza 2004 405 Universidad de Zaragoza Dpto. Física Teórica Área Física Teórica 87, 3 (2018), 034701 [6 pp] J. Phys. Soc. Jpn. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 0031-9015 212229 http://zaguan.unizar.es/record/78310/files/texto_completo.pdf Postprint 89647 http://zaguan.unizar.es/record/78310/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:78310 articulos driver 2020-01-03-14:01:10 ARTICLE