| Autor: |
A. Khansili, A. Bangura, R. D. McDonald, B. J. Ramshaw, A. Rydh, A. Shekhter |
| Rok vydání: |
2023 |
| Předmět: |
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| DOI: |
10.48550/arxiv.2302.04442 |
| Popis: |
The quasiparticle density of states in correlated and quantum-critical metals directly probes the effect of electronic correlations on the Fermi surface. Measurements of the nuclear spin-lattice relaxation rate provide one such experimental probe of quasiparticle mass through the electronic density of states. By far the most common way of accessing the spin-lattice relaxation rate is via nuclear magnetic resonance and nuclear quadrupole resonance experiments, which require resonant excitation of nuclear spin transitions. Here we report non-resonant access to spin-lattice relaxation dynamics in AC-calorimetric measurements. The nuclear spin-lattice relaxation rate is inferred in our measurements from its effect on the frequency dispersion of the thermal response of the calorimeter-sample assembly. We use fast, lithographically-defined nanocalorimeters to access the nuclear spin-lattice relaxation times in metallic indium from 0.3~K to 7~K and in magnetic fields up to 35~T. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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