Enhanced Superconductivity in 2H-TaS 2 Devices through in Situ Molecular Intercalation.

Autor: Pereira JM; CIC nanoGUNE BRTA, 20018 Donostia-San Sebastián, Spain., Tezze D; CIC nanoGUNE BRTA, 20018 Donostia-San Sebastián, Spain., Martín-García B; CIC nanoGUNE BRTA, 20018 Donostia-San Sebastián, Spain.; IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain., Casanova F; CIC nanoGUNE BRTA, 20018 Donostia-San Sebastián, Spain.; IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain., Ormaza M; Departamento de Polímeros y Materiales Avanzados: Física, Química y Tecnología, UPV-EHU, 20018 San Sebastián, Spain., Hueso LE; CIC nanoGUNE BRTA, 20018 Donostia-San Sebastián, Spain.; IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain., Gobbi M; IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain.; Centro de Física de Materiales (CSIC-UPV-EHU) and Materials Physics Center (MPC), 20018 San Sebastián, Spain.
Jazyk: angličtina
Zdroj: ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2024 Aug 07; Vol. 16 (31), pp. 41626-41632. Date of Electronic Publication: 2024 Jul 23.
DOI: 10.1021/acsami.4c04997
Abstrakt: The intercalation of guest species into the gap of van der Waals materials often leads to the emergence of intriguing phenomena such as superconductivity. While intercalation-induced superconductivity has been reported in several bulk crystals, reaching a zero-resistance state in flakes remains challenging. Here, we show a simple method for enhancing the superconducting transition in tens-of-nanometers thick 2H-TaS 2 crystals contacted by gold electrodes through in situ intercalation. Our approach enables measuring the electrical characteristics of the same flake before and after intercalation, permitting us to precisely identify the effect of the guest species on the TaS 2 transport properties. We find that the intercalation of amylamine molecules into TaS 2 flakes causes a suppression of the charge density wave and an increase in the superconducting transition with an onset temperature above 3 K. Additionally, we show that a fully developed zero-resistance state can be achieved in flakes by engineering the conditions of the chemical intercalation. Our findings pave the way for the integration of chemically tailored intercalation compounds in scalable quantum technologies.
Databáze: MEDLINE
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