Extracting transport channel transmissions in scanning tunneling microscopy using superconducting excess current
EntityUAM. Departamento de Física Teórica de la Materia Condensada
PublisherAmerican Physical Society
10.1103/PhysRevB.105.165401Physical Review B 105.16 (2022): 165401
ISSN2469-9950 (print); 2469-9969 (online)
Projectinfo:eu-repo/grantAgreement/EC/H2020/681164/ERC//AbsoluteSpin; Gobierno de España. PID2020-114880GB-I00
SubjectsAtomic Scale Junction; Channel Transmission; Conduction Channel; Excess Current; Multiple Andreev Reflections; Scanning Tunnelling Microscopes; Transport Channel; Física
Rights© 2022 authors
Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional.
Transport through quantum coherent conductors, such as atomic junctions, is described by conduction channels. Information about the number of channels and their transmissions can be extracted from various sources, such as multiple Andreev reflections, dynamical Coulomb blockade, or shot noise. We complement this set of methods by introducing the superconducting excess current as a new tool to continuously extract the transport channel transmissions of an atomic scale junction in a scanning tunneling microscope. In conjunction with ab initio simulations, we employ this technique in atomic aluminum junctions to determine the influence of the structure adjacent to the contact atoms on the transport properties
Google Scholar:Senkpiel, Jacob - Drost, Robert - Klöckner, Jan C. - Etzkorn, Markus - Ankerhold, Joachim - Cuevas Rodríguez, Juan Carlos - Pauly, Fabian - Kern, Klaus - Ast, Christian R.
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