Tuning the ground state of cuprate superconducting thin films by nanofaceted substrates
Artikel i vetenskaplig tidskrift, 2024

Anisotropic transport properties have been assessed in a number of cuprate superconductors, providing evidence for a nematic state. We have recently shown that in ultra-thin YBa2Cu3O7−δ films, where nematicity is induced via strain engineering, there is a suppression of charge density wave scattering along the orthorhombic a-axis and a concomitant enhancement of strange metal behavior along the b-axis. Here we develop a microscopic model, that is based on the strong interaction between the substrate facets and the thin film, to account for the unconventional phenomenology. Based on the atomic force microscopy imaging of the substrates’ surface, the model is able to predict the absence (presence) of nematicity and the resulting transport properties in films grown on SrTiO3 (MgO) substrates. Our result paves the way to new tuning capabilities of the ground state of high-temperature superconductors by substrate engineering.

Författare

Giovanni Mirarchi

Sapienza, Università di Roma

Riccardo Arpaia

Universita Ca' Foscari Venezia

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

Eric Wahlberg

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

RISE Research Institutes of Sweden

Thilo Bauch

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

Alexei Kalaboukhov

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

S. Caprara

Sapienza, Università di Roma

C. Di Castro

Sapienza, Università di Roma

M. Grilli

Sapienza, Università di Roma

Floriana Lombardi

Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik

Götz Seibold

Brandenburgische Technische Universität

Communications Materials

26624443 (eISSN)

Vol. 5 1 146

Kvantfluktuationer och Kvantsammanflätning i Högtemperatursupraledare

Vetenskapsrådet (VR) (2020-05184), 2021-01-01 -- 2024-12-31.

Ämneskategorier

Oorganisk kemi

Annan materialteknik

Den kondenserade materiens fysik

DOI

10.1038/s43246-024-00582-5

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Senast uppdaterat

2024-08-16