High-resolution AC Calorimetry Measurement of Honeycomb magnet Na2Co2TeO6
ORAL
Abstract
AC calorimetry is a steady-state measurement technique capable of detecting small heat-capacity signals and variations. Recently, Na2Co2TeO6 is proposed as a candidate material for realizing the Kitaev-Heisenberg model on a honeycomb lattice, and its low-temperature thermal phase behaviors are currently under exploration. Equipped with a home-made AC calorimetry setup, we have measured the heat capacity of Na2Co2TeO6 single crystals with a resolution that is significantly better than commercial equipment. We find an unexpected small heat-capacity peak at low temperature and in zero magnetic field.
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Presenters
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Zhenhai Hu
International Center for Quantum Materials, School of Physics, Peking University, Peking Univ
Authors
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Zhenhai Hu
International Center for Quantum Materials, School of Physics, Peking University, Peking Univ
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Yuan Li
International Center for Quantum Materials, School of Physics, Peking University, Peking University, Peking Univ, International Cent re for Quantum Materials, School of Physics, Peking University, Beijing, Peking Univ
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Xi Lin
International Center for Quantum Materials, Peking University, Peking Univ, International Center for Quantum Materials, School of Physics, Peking University, Peking University