Giant Rashba-splitting of one-dimensional metallic states in Bi dimer lines on InAs(100)
Source abstract
Abstract
Bismuth produces different types of ordered superstructures on the InAs(100) surface, depending on the growth procedure and coverage. The (2 × 1) phase forms at completion of one Bi monolayer and consists of a uniformly oriented array of parallel lines of Bi dimers. Scanning tunneling and core level spectroscopies demonstrate its metallic character, in contrast with the semiconducting properties expected on the basis of the electron counting principle. The weak electronic coupling among neighboring lines gives rise to quasi one-dimensional Bi-derived bands with open contours at the Fermi level. Spin- and angle-resolved photoelectron spectroscopy reveals a giant Rashba splitting of these bands, in good agreement with ab initio electronic structure calculations. The very high density of the dimer lines, the metallic and quasi one-dimensional band dispersion and the Rashba-like spin texture make the Bi/InAs(100)-(2 × 1) phase an intriguing system, where novel transport regimes can be studied.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Surface and Thin Film Phenomena · Topological Materials and Phenomena · Physics of Superconductivity and Magnetism
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
CNR-Istituto di Struttura della Materia (CNR-ISM), Strada Statale 14 km 163.5, 34149 Trieste, Italy
Peter Grünberg Institut (PGI-1), Forschungszentrum Jülich and JARA, D-52425 Jülich, Germany
Dipartimento di Fisica, Università di Trieste, 34127 Trieste, Italy
CNR-Istituto Officina dei Materiali (CNR-IOM), 34149 Trieste, Italy
Peter Grünberg Institute (PGI-6), Forschungszentrum Jülich, 52428 Jülich, Germany
TU Dortmund University, Otto-Hahn-Straße 4, 44227 Dortmund, Germany
Institute of Physics, University of Graz, Universitätsplatz 5, 8010 Graz, Austria
Fakultät für Physik, Universität Duisburg-Essen, 47057 Duisburg, Germany
Elettra Sincrotrone Trieste, Strada Statale 14 km 163.5, 34149 Trieste, Italy
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
International Center for Theoretical Physics (ICTP), 34151 Trieste, Italy
Funding
Abdus Salam International Centre for Theoretical Physics · Bundesministerium für Bildung und Forschung · Jülich Supercomputing Centre, Forschungszentrum Jülich · Basic Energy Sciences
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