November 22, 2023
PSI Villigen
Europe/Zurich timezone

Complex Order Parameter Tuning in Superconducting La1.88Sr0.12CuO4

Nov 22, 2023, 4:15 PM
Auditorium (WHGA) (PSI Villigen)

Auditorium (WHGA)

PSI Villigen


Julia Küspert (University of Zurich)


High-temperature superconducting cuprates are a model system to examine the relationship between intertwined quantum phases. The competition has, however, been difficult to tune with external stimuli without inducing superconducting vortices by a magnetic field at the same time. In our study, we show that $c$-axis strain couples directly to the phase competition between charge stripe order and superconductivity in La$_{2-x}$Sr$_x$CuO$_4$ (LSCO). To track the evolution of charge order upon application of strain at different temperatures, dopings, and magnetic fields, x-ray diffraction measurements were performed at DESY. We show, that compressive $c$-axis pressure enhances stripe order only within the superconducting state. The strain furthermore diminishes the magnetic field enhancement of stripe order. It thus provides a fruitful approach to study the interplay between superconductivity and charge order in the cuprates.

Primary authors

Julia Küspert (University of Zurich) Dr Izabela Biało (University of Zurich) Dr Ruggero Frison (University of Zurich) Alexander Morawietz (University of Zurich) Dr Jaewon Choi (University of Zurich) Damian Bucher (University of Zurich) Dr Oleh Ivashko (Deutsches Elektronen-Synchrotron DESY Hamburg) Dr Martin Zimmermann, von (Deutsches Elektronen-Synchrotron) Dr Niels B. Christensen (Technical University of Denmark) Daniel Gabriel Mazzone (PSI - Paul Scherrer Institut) Gediminas Simutis (PSI - Paul Scherrer Institut) Alexandra Angeline Turrini (PSI - Paul Scherrer Institut) Laure Thomarat (PSI - Paul Scherrer Institut) David William Tam (PSI - Paul Scherrer Institut) Marc Janoschek (PSI - Paul Scherrer Institut) Prof. Tohru Kurosawa (Hokkaido University) Dr Naoki Momono (Hokkaido University) Prof. Migaku Oda (Hokkaido University) Dr Qisi Wang (University of Zurich) Johan Chang

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