Increasing experimental evidence suggests the occurrence of filamentary superconductivity in different (quasi) two-dimensional physical systems. In this piece of work, we discuss the proposal that under certain circumstances, this occurrence may be related to the competition with a phase characterized by charge ordering in the form of charge-density waves. We provide a brief summary of experimental evidence supporting our argument in two paradigmatic classes of materials, namely transition metal dichalcogenides and cuprates superconductors. We present a simple Ginzburg–Landau two-order-parameters model as a starting point to address the study of such competition. We finally discuss the outcomes of a more sophisticated model, already presented in the literature and encoding the presence of impurities, and how it can be further improved in order to really address the interplay between charge-density waves and superconductivity and the possible occurrence of filamentary superconductivity at the domain walls between different charge-ordered regions.

Charge-Density Waves vs. Superconductivity: Some Results and Future Perspectives / Venditti, Giulia; Caprara, Sergio. - In: CONDENSED MATTER. - ISSN 2410-3896. - 8:3(2023), pp. 1-18. [10.3390/condmat8030054]

Charge-Density Waves vs. Superconductivity: Some Results and Future Perspectives

Giulia Venditti
Primo
Formal Analysis
;
Sergio Caprara
Ultimo
Formal Analysis
2023

Abstract

Increasing experimental evidence suggests the occurrence of filamentary superconductivity in different (quasi) two-dimensional physical systems. In this piece of work, we discuss the proposal that under certain circumstances, this occurrence may be related to the competition with a phase characterized by charge ordering in the form of charge-density waves. We provide a brief summary of experimental evidence supporting our argument in two paradigmatic classes of materials, namely transition metal dichalcogenides and cuprates superconductors. We present a simple Ginzburg–Landau two-order-parameters model as a starting point to address the study of such competition. We finally discuss the outcomes of a more sophisticated model, already presented in the literature and encoding the presence of impurities, and how it can be further improved in order to really address the interplay between charge-density waves and superconductivity and the possible occurrence of filamentary superconductivity at the domain walls between different charge-ordered regions.
2023
superconductivity; charge-density wave; competition
01 Pubblicazione su rivista::01a Articolo in rivista
Charge-Density Waves vs. Superconductivity: Some Results and Future Perspectives / Venditti, Giulia; Caprara, Sergio. - In: CONDENSED MATTER. - ISSN 2410-3896. - 8:3(2023), pp. 1-18. [10.3390/condmat8030054]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1684706
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