Dynamical quenching of tunneling in molecular magnets
Mesoscale and Nanoscale Physics
2015-12-09 v1
Abstract
It is shown that a single molecular magnet placed in a rapidly oscillating magnetic field displays the phenomenon of quenching of tunneling processes. The results open a way to manipulate the quantum states of molecular magnets by means of radiation in the terahertz range. Our analysis separates the time evolution into slow and fast components thereby obtaining an effective theory for the slow dynamics. This effective theory presents quenching of the tunnel effect. In particular, stands out its difference with the so-called coherent destruction of tunneling. We support our prediction with numerical evidence based on an exact solution of the Schr\"odinger's equation.
Keywords
Cite
@article{arxiv.1508.04499,
title = {Dynamical quenching of tunneling in molecular magnets},
author = {María José Santander and Alvaro S. Nunez and A. Roldán-Molina and Roberto E. Troncoso},
journal= {arXiv preprint arXiv:1508.04499},
year = {2015}
}