IDEAS home Printed from https://ideas.repec.org/a/eee/phsmap/v600y2022ics0378437122003788.html
   My bibliography  Save this article

Refrigeration using magnetocaloric and electrocaloric effects in a Fermi–Hubbard optical dimer exposed to a heat bath

Author

Listed:
  • Villegas, Vladimir P.
  • Villagonzalo, Cristine D.

Abstract

We consider a Fermi–Hubbard dimer exposed to external electromagnetic fields and a Fermi gas bath under the assumptions of a repulsive two-particle interaction and the half-filling condition. Using the exact diagonalization method, it was found that the entropy and heat capacity rapidly rise within distinct localized regions of the magnetic and electric fields at low temperatures. The behavior of the magnetic (electric) Grüneisen ratio denotes that the direction of the external field determines the magnetization or demagnetization (polarization or depolarization) due to the magnetocaloric (electrocaloric) effect among the lattice particles at a given temperature. At the same time, the isothermal entropic change as a function of the temperature indicates that refrigeration is optimized when the electric field along the line joining the two sites of the optical lattice is assisted by a transverse magnetic field.

Suggested Citation

  • Villegas, Vladimir P. & Villagonzalo, Cristine D., 2022. "Refrigeration using magnetocaloric and electrocaloric effects in a Fermi–Hubbard optical dimer exposed to a heat bath," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 600(C).
    • Handle: RePEc:eee:phsmap:v:600:y:2022:i:c:s0378437122003788
    DOI: 10.1016/j.physa.2022.127540
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0378437122003788
    Download Restriction: Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000
    File URL: https://libkey.io/10.1016/j.physa.2022.127540?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Balcerzak, T. & Szałowski, K., 2018. "Hubbard pair cluster in the external fields. Studies of the polarization and susceptibility," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 512(C), pages 1069-1084.
    2. Balcerzak, T. & Szałowski, K., 2017. "Hubbard pair cluster in the external fields. Studies of the chemical potential," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 468(C), pages 252-266.
    3. Balcerzak, T. & Szałowski, K., 2019. "Hubbard pair cluster with elastic interactions. Studies of thermal expansion, magnetostriction and electrostriction," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 531(C).
    4. Balcerzak, T. & Szałowski, K., 2018. "Hubbard pair cluster in the external fields. Studies of the magnetic properties," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 499(C), pages 395-406.
    5. Quentin Bouton & Jens Nettersheim & Sabrina Burgardt & Daniel Adam & Eric Lutz & Artur Widera, 2021. "A quantum heat engine driven by atomic collisions," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Balcerzak, T. & Szałowski, K., 2018. "Hubbard pair cluster in the external fields. Studies of the polarization and susceptibility," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 512(C), pages 1069-1084.
    2. Kumar, Ashutosh & Lahiri, Sourabh & Bagarti, Trilochan & Banerjee, Subhashish, 2023. "Thermodynamics of one and two-qubit nonequilibrium heat engines running between squeezed thermal reservoirs," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 623(C).
    3. Sarmah, Manash Jyoti & Goswami, Himangshu Prabal, 2023. "Learning coherences from nonequilibrium fluctuations in a quantum heat engine," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 627(C).
    4. Balcerzak, T. & Szałowski, K., 2018. "Hubbard pair cluster in the external fields. Studies of the magnetic properties," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 499(C), pages 395-406.
    5. O. Onishchenko & G. Guarnieri & P. Rosillo-Rodes & D. Pijn & J. Hilder & U. G. Poschinger & M. Perarnau-Llobet & J. Eisert & F. Schmidt-Kaler, 2024. "Probing coherent quantum thermodynamics using a trapped ion," Nature Communications, Nature, vol. 15(1), pages 1-6, December.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:phsmap:v:600:y:2022:i:c:s0378437122003788. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/physica-a-statistical-mechpplications/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.