Dynamical quenching of tunneling in molecular magnets

María José Santander, Alvaro S. Nunez, A. Roldán-Molina, Roberto E. Troncoso

Research output: Contribution to journalArticlepeer-review


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 Schrödinger's equation.

Original languageEnglish
Article number60496
Pages (from-to)176-180
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
StatePublished - 5 Aug 2015
Externally publishedYes


  • Magnetization Dynamics
  • Topological Quenching
  • Tunnel effect


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