Title
Terahertz radiation from crystals of nanomagnets Terahertz radiation from crystals of nanomagnets
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
conferenceObject
Publication
Bristol ,
Subject
Physics
Source (journal)
Journal of physics : conference series. - Bristol
Volume/pages
36(2006) , p. 12-17
ISSN
1742-6588
ISI
000239847500003
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Certain crystals, consisting of molecules with unusually large spin, exhibit macroscopically observable signatures of quantum tunneling, when a slowly varying external magnetic field is applied parallel to the easy axis of the crystal. Recently it has been observed that jumps in the magnetization are sometimes accompanied by the emission of infrared radiation. We discuss the connection of the tunneling with the electromagnetic transition, and we address the questions: to what extent can the radiation be considered as a collective, superradiant emission, and what is the role played by the cavity in the experiments? Our conclusion is that among the reported experimental coditions the radiation is not superradidance, but rather a maserlike effect.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/77c6b1/1878.pdf
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