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Updated: Sep 16, 2025

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Modeling thermal effects in Heisenberg dimers initiated by fast magnetic field switching off
Andrew Palii1, Valeria Belonovich1,2, Sergei Aldoshin1
1Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of RAS, Chernogolovka, Moscow Region 142432, Russia.
Abstract:
In this article, we analyze the thermal processes induced in the Heisenberg-type exchange coupled binuclear clusters by suddenly switching off the magnetic field initially applied to the system. The key result of the present study is the established correlation between the sign of the exchange parameter and the sign of the thermal effect. We have demonstrated that in the case of a ferromagnetic exchange, heat absorption (cooling) occurs, while if the exchange is antiferromagnetic, heat release (heating) takes place. This conclusion suggests a possibility to regard Heisenberg type dimers exhibiting ferromagnetic exchange as a class of low-temperature magnetic refrigerants that could be promising for practical applications.
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