Resonant inelastic x-ray scattering to study changes in the HTS phase diagram induced by strain and confinement
Research Project , 2021 – 2024

The microscopic origin of the phenomenology of high-Tc superconductors is one of the grand challenges in solid state physics. Among the various local orders populating the phase diagram of these compounds, a special role is played by charge order: as recently discovered, it is ubiquitous in the phase diagram, in a fluctuating form, being very robust as a function of the doping and existing at all temperatures.Here I propose to study the charge order by using resonant Inelastic X-ray scattering (RIXS) on state-of-the-art samples. RIXS – which I have mastered during my VR International Postdoc - is the best technique for the detection of charge modulations. The samples are HTS thin films, whose growth I have optimized during my PhD at Chalmers: they represent a unique platform, where charge order can be modified by playing with various parameters, as strain and confinement.By complementing RIXS with transport studies, I plan to check how changes in charge modulations reflect in variations of the normal/superconducting state. RIXS will be performed in synchrotron-based world lead facilities, as the MAX IV, a research infrastructure on which Chalmers is massively investing. Sample growth and transport studies will occur in the cleanroom of the MC2 department at Chalmers.Through several targeted experiments, I will unveil the secrets behind charge order and its role in ruling the properties of cuprates, in particular the high-Tc superconductivity and the strange metal behavior.

Participants

Riccardo Arpaia (contact)

Researcher at Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Funding

Swedish Research Council (VR)

Funding Chalmers participation during 2021–2024

More information

Latest update

2021-01-05