Details
| Original language | English |
|---|---|
| Article number | 165401 |
| Journal | Physical Review B |
| Volume | 105 |
| Issue number | 16 |
| Publication status | Published - 1 Apr 2022 |
| Externally published | Yes |
Abstract
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.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B, Vol. 105, No. 16, 165401, 01.04.2022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Extracting transport channel transmissions in scanning tunneling microscopy using superconducting excess current
AU - Senkpiel, Jacob
AU - Drost, Robert
AU - Klöckner, Jan C.
AU - Etzkorn, Markus
AU - Ankerhold, Joachim
AU - Cuevas, Juan Carlos
AU - Pauly, Fabian
AU - Kern, Klaus
AU - Ast, Christian R.
N1 - Funding information: This work was funded, in part, by the ERC Consolidator Grant AbsoluteSpin (Grant No. 681164). J.C.K. and F.P. thank the Collaborative Research Center (SFB) 767 of the German Research Foundation (DFG) as well as the Okinawa Institute of Science and Technology (OIST) Graduate University for financial support. Part of the numerical modeling was performed using the computational resources of the bwhpc program, namely, the bwUniCluster and the JUSTUS HPC facility. J.C.C. acknowledges funding from the Spanish Ministry of Science and Innovation (Grant No. PID2020-114880GB-I00). J.A. acknowledges funding from the Center for Integrated Quantum Science & Technology () and the DFG through AN336/13-1.
PY - 2022/4/1
Y1 - 2022/4/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85128405967&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.105.165401
DO - 10.1103/PhysRevB.105.165401
M3 - Article
VL - 105
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 16
M1 - 165401
ER -