Spin-phonon interaction induces tunnel splitting in single-molecule magnets

Irländer K, Schnack J (2020)
PHYSICAL REVIEW B 102(5): 054407.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Quantum tunneling of the magnetization is a major obstacle to the use of single-molecule magnets as basic constituents of next-generation storage devices. In this context, phonons are often only considered (perturbatively) as disturbances that promote the spin system to traverse the anisotropy barrier. Here, we demonstrate the ability of phonons to induce a tunnel splitting of the ground doublet which then reduces the required bistability due to Landau-Zener tunneling of the magnetization. Harmful are those phonons that modify the spin Hamiltonian so that its rotational symmetry about the field axis is destroyed. In our calculations we treat spins and phonons on the same footing by performing quantum calculations of a Hamiltonian where the single-ion anisotropy tensors are coupled to harmonic oscillators.
Erscheinungsjahr
2020
Zeitschriftentitel
PHYSICAL REVIEW B
Band
102
Ausgabe
5
Art.-Nr.
054407
ISSN
2469-9950
eISSN
2469-9969
Page URI
https://pub.uni-bielefeld.de/record/2945439

Zitieren

Irländer K, Schnack J. Spin-phonon interaction induces tunnel splitting in single-molecule magnets. PHYSICAL REVIEW B. 2020;102(5): 054407.
Irländer, K., & Schnack, J. (2020). Spin-phonon interaction induces tunnel splitting in single-molecule magnets. PHYSICAL REVIEW B, 102(5), 054407. doi:10.1103/PhysRevB.102.054407
Irländer, K., and Schnack, J. (2020). Spin-phonon interaction induces tunnel splitting in single-molecule magnets. PHYSICAL REVIEW B 102:054407.
Irländer, K., & Schnack, J., 2020. Spin-phonon interaction induces tunnel splitting in single-molecule magnets. PHYSICAL REVIEW B, 102(5): 054407.
K. Irländer and J. Schnack, “Spin-phonon interaction induces tunnel splitting in single-molecule magnets”, PHYSICAL REVIEW B, vol. 102, 2020, : 054407.
Irländer, K., Schnack, J.: Spin-phonon interaction induces tunnel splitting in single-molecule magnets. PHYSICAL REVIEW B. 102, : 054407 (2020).
Irländer, Kilian, and Schnack, Jürgen. “Spin-phonon interaction induces tunnel splitting in single-molecule magnets”. PHYSICAL REVIEW B 102.5 (2020): 054407.

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