Entropy of Conduction Electrons from Transport Experiments

Entropy

Bruno Weise¹  Maria Krautz¹  Alexander Kunzmann²  Gabi Schierning²  Jens Freudenberger²  Nicolás Pérez²  Kornelius Nielsch²  Constantin Wolf² 

[1] Institute for Complex Materials, IFW-Dresden, 01069 Dresden, Germany;Institute for Metallic Materials, IFW-Dresden, 01069 Dresden, Germany;

关键词: electronic entropy;    seebeck coefficient;    transport;    lafesi;    ferh;    cuni;   

DOI  :  10.3390/e22020244

来源: DOAJ

【 摘 要 】

The entropy of conduction electrons was evaluated utilizing the thermodynamic definition of the Seebeck coefficient as a tool. This analysis was applied to two different kinds of scientific questions that can—if at all—be only partially addressed by other methods. These are the field-dependence of meta-magnetic phase transitions and the electronic structure in strongly disordered materials, such as alloys. We showed that the electronic entropy change in meta-magnetic transitions is not constant with the applied magnetic field, as is usually assumed. Furthermore, we traced the evolution of the electronic entropy with respect to the chemical composition of an alloy series. Insights about the strength and kind of interactions appearing in the exemplary materials can be identified in the experiments.

【 授权许可】

Unknown