Research project Quantum Materials with Anisotropic Heavy Fermions
Quantum materials are materials with strong electronic correlation and emergent orders. In this research project we will experimentally study quantum materials in systems with strongly anisotropic properties.
For the studies, we will apply our experimental technique of ultra-small sample specific heat measurements to investigate single crystals of such quantum materials at low temperatures (down to 10 mK) and high magnetic fields (45 T and beyond) with sample rotation. The technique, that we have been developing for many years, is now fully ready to firmly establish its place as a key materials characterization method in strong magnetic fields. The theoretical understanding of strongly correlated systems is a great challenge. Theoretical frameworks of quantum criticality and heavy fermions are not easily reconciled with each other. Each new material also brings additional puzzling observations. High- quality thermodynamic characterization is a key component for assisting this theoretical understanding and development.
Project description
High magnetic fields is a powerful tool to both probe and couple to materials through interaction with conduction electrons, localized magnetic moments, and even nuclear spins. A key aspect of the magnetic field is its direction. The directional dependence allows separating effects from magnetic structure, Fermi surface, and emerging orders.
The aim of this project is to further the theoretical understanding of strongly correlated systems with anisotropy by providing unprecedented specific heat measurements on key materials in strong magnetic fields. We will focus on anisotropic heavy-fermion systems with related quantum spin liquids, reentrant superconductivity, and/or FFLO phases.
Project members
Project managers
Andreas Rydh
Universitetslektor, docent
Members
Neha Kondedan
PhD Student
Akash Khansili
Phd Student
Publications
Differential membrane-based nanocalorimeter for high-resolution measurements of...