| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications XI
|
| Presentation Title |
Spin-mediated Thermal Transport in Low-dimensional Quantum Magnets |
| Author(s) |
Xi Chen |
| On-Site Speaker (Planned) |
Xi Chen |
| Abstract Scope |
Understanding the microscopic transport mechanisms of spin excitations and phonons in quantum materials is crucial to develop high performance devices for thermal management, energy conversion, and quantum information processing. In this talk, I will present heat transport measurement as a useful tool to probe these quasiparticles in several magnetic materials with unique quasi-low dimensional crystal structures. I will first introduce large spin-mediated thermal conductivity in the antiferromagnetic spin ladder compound Sr14Cu24O41 and spin chain compound Ca2CuO3. Thermal measurements on bulk single crystals can reveal the elusive coupling of spins with impurities and phonons in these low-dimensional magnets. I will also discuss the synthesis and thermal transport properties of spin ladder microrods and nanostructured polycrystals. It is found that boundary and defect scattering processes are critical for the magnon thermal transport in the microstructures. These findings offer new insights important for devising more efficient devices based on spin transport. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Characterization, Energy Conversion and Storage |