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Thermal Conductivity in Quantum Materials Research

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Thermal conductivity measurements constitute a bulk and directional probe of all delocalized excitations in materials. The dependence of the conductivity on temperature and magnetic field can be used to identify novel excitations and phase transitions in quantum materials. In this talk, I will describe how measurements are made at ultralow temperatures and present results on so-called ‘spin-ice’ materials whose elementary excitations are analogous to mobile magnetic monopoles. Our study includes some interesting observations on the effects of disorder on these materials.

This talk is part of the Quantum Matter Seminar series.

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