Journal Article

PUBDB-2024-06305

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Nanoscale Operando Imaging of Electrically Driven Charge-Density Wave Phase Transitions

Domröse, T. ; Fernandez, N. ; Eckel, C. ; Rossnagel, K.DESY* ; Weitz, R. T. ; Ropers, C. (Corresponding author)

2024
ACS Publ. Washington, DC

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Please use a persistent id in citations: doi:10.1021/acs.nanolett.4c03324  doi:10.3204/PUBDB-2024-06305

Abstract: Structural transformations in strongly correlated materials promise efficient and fast control of materials’ properties via electrical or optical stimulation. The desired functionality of devices operating based on phase transitions, however, will also be influenced by nanoscale heterogeneity. Experimentally characterizing the relationship between microstructure and phase switching remains challenging, as nanometer resolution and high sensitivity to subtle structural modifications are required. Here, we demonstrate nanoimaging of a current-induced phase transformation in the charge-density wave (CDW) material 1T-TaS$_2$. Combining electrical characterizations with tailored contrast enhancement, we correlate macroscopic resistance changes with the nanoscale nucleation and growth of CDW phase domains. In particular, we locally determine the transformation barrier in the presence of dislocations and strain, underlining their non-negligible impact on future functional devices. Thereby, our results demonstrate the merit of tailored contrast enhancement and beam shaping for advanced operando microscopy of quantum materials and devices.

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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. SFB 1073 A05 - Nanoskalige Untersuchung raumzeitlicher Relaxation in heterogenen Systemen (A05) (240159667) (240159667)
3. DFG project G:(GEPRIS)217133147 - SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen (217133147) (217133147)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2024

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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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