Andreev reflection at the edge of a two-dimensional electron system with strong spin-orbit coupling
Year: 2013
Type: article
Abstract: We experimentally investigate transport properties of a single planar junction between the niobium superconductor and the edge of a two-dimensional electron system in a narrow In 0.75 Ga 0.25 As quantum well with strong Rashba-type spin-orbit coupling. We experimentally demonstrate suppression of Andreev reflection at low biases at ultralow temperatures. From the analysis of temperature and magnetic field behavior, we interpret the observed suppression as a result of a spin-orbit coupling. There is also an experimental sign of the topological superconductivity realization in the present structure.
Authors: A. Kononov, G. Biasiol, L. Sorba, E. V. Deviatov
Institutions: Russian Academy of Sciences, Moscow Institute of Physics and Technology, Osipyan Institute of Solid State Physics RAS, Think-tank for Action on Social Change, National Research Council, Scuola Normale Superiore, Istituto Nanoscienze, National Enterprise for NanoScience and NanoTechnology
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2017067941