Dresden 2026 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 42: Other Transport Topics

TT 42.3: Vortrag

Mittwoch, 11. März 2026, 10:00–10:15, HSZ/0105

Single Spin-Flip Dynamics in the Ising Model — •Luca Cervellera, Fred Hucht, and Björn Sothmann — University of Duisburg-Essen, Duisburg, Germany

We investigate the real-time spin-flip dynamics of the 1D Ising model by means of waiting time distributions between subsequent spin flips. At large temperatures the waiting time distribution shows an exponential decay due to thermal excitation and relaxation of spins. At low temperatures, the waiting time distribution is dominated by an algebraic decay caused by domain wall motion. The latter can be suppressed by an external magnetic field. Our results are relevant to understand the dynamics of dimer flipping on the Si(001) surface [1].
[1] C. Brand et al., Phys. Rev. Lett. 130, 126203 (2023).

Keywords: Waiting time distribution; Ising model; Telegraph signal