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Ferroelectric Order Control of the Dirac‐Semimetal Phase in GeTe‐Sb 2 Te 3 Superlattices
Author(s) -
Tominaga J.,
Kolobov A. V.,
Fons P.,
Nakano T.,
Murakami S.
Publication year - 2014
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201300027
Subject(s) - superlattice , semimetal , materials science , topological insulator , ferroelectricity , dirac (video compression format) , condensed matter physics , insulator (electricity) , phase (matter) , optoelectronics , physics , dielectric , quantum mechanics , band gap , neutrino
A superlattice made of a topological insulator (Sb 2 Te 3 ) and a normal insulator (ferroelectric GeTe) , also called an interfacial phase‐change material, are switched between the Dirac semimetal and gapped phases by applying an external electric field, which provides a platform to study topological insulators and opens new possibilities for designing phase‐change memory devices.