Spin fluctuations yield zT enhancement in ferromagnets

  title={Spin fluctuations yield zT enhancement in ferromagnets},
  author={Md. Mobarak Hossain Polash and Daryoosh Vashaee},
Summary Thermal fluctuation of local magnetization intercoupled with charge carriers and phonons offers a path to enhance thermoelectric performance. Thermopower enhancement by spin fluctuations (SF) has been observed before. However, the crucial evidence for enhancing thermoelectric-figure-of-merit (zT) by SF has not been reported until now. Here we report that the SF leads to nearly 80% zT enhancement in ferromagnetic CrTe near and below TC ∼ 335 K. The ferromagnetism is originated from the… 
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