Can you explain the concept of thermomagnetic effects and their significance in solid-state physics?

Sample interview questions: Can you explain the concept of thermomagnetic effects and their significance in solid-state physics?

Sample answer:

Thermomagnetic Effects

Thermomagnetic effects are a class of phenomena that describe the interaction between temperature and magnetic fields in solid-state materials. They arise from the temperature dependence of the magnetic properties of materials and can exhibit a wide range of behaviors.

Types of Thermomagnetic Effects:

  • Magnetoresistance (MR): Change in electrical resistance of a material in response to an applied magnetic field.
  • Hall Effect (HE): Development of a transverse voltage in a conducting material perpendicular to both an applied electric field and magnetic field.
  • Giant Magnetoresistance (GMR): Large change in MR observed in certain magnetic multilayer structures with antiferromagnetic coupling.
  • Colossal Magnetoresistance (CMR): Extremely large MR exhibited by materials with partially filled d- or f-shells, showcasing a metal-insulator transition with applied magnetic field.
  • Magnetocaloric Effect (MCE): Temperature change in a material upon application and removal of a magnetic field.

Significance in Solid-State Physics:

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