Nanocalorimetry: new opportunities in thermodynamic characterization


Project leader


Funding source

Swedish Research Council - Vetenskapsrådet (VR)


Project Details

Start date: 01/01/2017
End date: 31/12/2020
Funding: 3400000 SEK


Description

Specific heat measurements provide the fundamental thermodynamic signatures that are needed to understand and interpret novel material properties. We will apply our unique phase-stabilized differential ac-nanocalorimeter to perform measurements with an unprecedented combination of high resolution and absolute accuracy on microgram-size single crystals and thin films. In particular, we will study the low-temperature electronic specific heat of Fe-based and related high-Tc superconductors as a function of temperature, magnetic field and magnetic field direction and the quantum phase transition of ferromagnetic thin film systems. These are potential key measurements that are hard, if at all possible, to perform using conventional calorimetry. From the measurements a wealth of information can be obtained, such as coupling strength, residual density of states, gap nodes, and multi-band behavior.

The project is designed to span over 4 years and will be organized as a small research group with in-house experiments and external collaborators for theory and single crystal samples.

While room-temperature superconductivity has not yet been discovered, research on high-Tc superconductors has brought about advances such as new instrumentation, theoretical treatments, and methods of materials processing. With our nanocalorimetry system, we will add significant pieces to the puzzle through new experiments that probe essential underpinnings of high-Tc superconductivity.


Last updated on 2017-07-06 at 13:45