Supersymmetric spin-phonon coupling prevents odd integer spins from quantum tunneling

Irländer K, Schmidt H-J, Schnack J (2021)
The European Physical Journal B 94(3): 68.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Quantum tunneling of the magnetization is a phenomenon that impedes the use of small anisotropic spin systems for storage purposes even at the lowest temperatures. Phonons, usually considered for temperature dependent relaxation of magnetization over the anisotropy barrier, also contribute to magnetization tunneling for integer spin quantum numbers. Here we demonstrate that certain spin-phonon Hamiltonians are unexpectedly robust against the opening of a tunneling gap, even for strong spin-phonon coupling. The key to understanding this phenomenon is provided by an underlying supersymmetry that involves both spin and phonon degrees of freedom.
Erscheinungsjahr
2021
Zeitschriftentitel
The European Physical Journal B
Band
94
Ausgabe
3
Art.-Nr.
68
ISSN
1434-6028
eISSN
1434-6036
Page URI
https://pub.uni-bielefeld.de/record/2953816

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Irländer K, Schmidt H-J, Schnack J. Supersymmetric spin-phonon coupling prevents odd integer spins from quantum tunneling. The European Physical Journal B . 2021;94(3): 68.
Irländer, K., Schmidt, H. - J., & Schnack, J. (2021). Supersymmetric spin-phonon coupling prevents odd integer spins from quantum tunneling. The European Physical Journal B , 94(3), 68. https://doi.org/10.1140/epjb/s10051-021-00073-3
Irländer, K., Schmidt, H. - J., and Schnack, J. (2021). Supersymmetric spin-phonon coupling prevents odd integer spins from quantum tunneling. The European Physical Journal B 94:68.
Irländer, K., Schmidt, H.-J., & Schnack, J., 2021. Supersymmetric spin-phonon coupling prevents odd integer spins from quantum tunneling. The European Physical Journal B , 94(3): 68.
K. Irländer, H.-J. Schmidt, and J. Schnack, “Supersymmetric spin-phonon coupling prevents odd integer spins from quantum tunneling”, The European Physical Journal B , vol. 94, 2021, : 68.
Irländer, K., Schmidt, H.-J., Schnack, J.: Supersymmetric spin-phonon coupling prevents odd integer spins from quantum tunneling. The European Physical Journal B . 94, : 68 (2021).
Irländer, Kilian, Schmidt, Heinz-Juergen, and Schnack, Jürgen. “Supersymmetric spin-phonon coupling prevents odd integer spins from quantum tunneling”. The European Physical Journal B 94.3 (2021): 68.

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arXiv: 2006.16575

Inspire: 1853509

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