Journal Article

PUBDB-2025-00085

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Charge-Density-Wave Control by Adatom Manipulation and Its Effect on Magnetic Nanostructures

Rütten, L. M. ; Liebhaber, E. ; Rossnagel, K.DESY* ; Franke, K. J. (Corresponding author)

2025
ACS Publ. Washington, DC

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Please use a persistent id in citations: doi:10.1021/acs.nanolett.4c04581  doi:10.3204/PUBDB-2025-00085

Abstract: Charge-density waves (CDWs) are correlated states of matter, in which the electronic density is modulated periodically due to electronic and phononic interactions. Often, CDW phases coexist with other correlated states, such as superconductivity, spin-density waves, or Mott insulators. Controlling CDW phases may, therefore, enable the manipulation of the energy landscape of these interacting states. The transition metal dichalcogenide 2H-NbSe$_2$ hosts both CDW order and superconductivity, with the incommensurate CDW phase resulting in different CDW-to-lattice alignments at the atomic scale. Using scanning tunneling microscopy, we position adatoms on the surface to induce reversible CDW domain switching. We show that the domain structure critically affects other local interactions, particularly the hybridization of Yu–Shiba–Rusinov states, which emerge from exchange interactions of magnetic Fe atoms with the superconductor. Our results suggest that CDW manipulation could also be used to introduce domain walls into coupled spin chains on superconductors, potentially impacting topological superconductivity.

Note: The authors acknowledge financial support by the DeutscheForschungsgemeinschaft (DFG, German Research Founda-tion) through Projects 277101999 (CRC 183, Project C03)and 328545488 (CRC 227, Project B05). Sample growth wassupported by DFG through Project 434434223 (CRC 1461).L.M.R. acknowledges membership in the International MaxPlanck Research School “Elementary Processes in PhysicalChemistry”.

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Contributing Institute(s):

1. FS-SXQM (FS-SXQM)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. DFG project G:(GEPRIS)316546650 - Hybride topologische Plattformen (C03) (316546650) (316546650)
3. DFG project G:(GEPRIS)397935742 - Spindynamik in atomar präzisen Nanostrukturen (B05) (397935742) (397935742)
4. DFG project G:(GEPRIS)434434223 - SFB 1461: Neuroelektronik: Biologisch inspirierte Informationsverarbeitung (434434223) (434434223)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2025

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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