2012/04/16 by Li-Ping Yang, L. P. Yang, Y. Li +2
Materials Science · Physics and Astronomy · #Magnetic properties of thin films #Magnetism in coordination complexes #Quantum and electron transport phenomena #cond-mat.other #quant-ph
paper · pdf · doi:10.1140/epjd/e2012-30324-9
published as Eur. Phys. J. D (2012) 66: 300 · 8 pages, 8 figures
arxiv created 2012/04/16 · openalex publication_date 2012/11/01 · arxiv updated 2012/12/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We study the quantum transitions of a central spin surrounded by a collective-spin environment. It is found that the influence of the environmental spins on the absorption spectrum of the central spin can be explained with the analog of the Franck-Condon (FC) effect in conventional electron-phonon interaction system. Here, the collective spins of the environment behave as the vibrational mode, which makes the electron to be transitioned mainly with the so-called "vertical transitions" in the conventional FC effect. The "vertical transition" for the central spin in the spin environment manifests as, the certain collective spin states of the environment is favored, which corresponds to the minimal change in the average of the total spin angular momentum.