Ground state of the magnetic molecule {V6} determined by broadband electron spin resonance at low frequency

TitleGround state of the magnetic molecule {V6} determined by broadband electron spin resonance at low frequency
Publication TypeJournal Article
Year of Publication2011
AuthorsCorti M, Cattaneo L, Mozzati MC, Borsa F, Jang ZH, Fang X
Journal TitleJournal of Applied Physics
Volume109
Pages07B104
Date Published04/01
Type of ArticleProceedings Paper
ISBN Number0021-8979
Accession NumberISI:000289949000330
Abstract

We utilize a nonconventional (i.e., without resonance cavity) broadband electron spin resonance (ESR) spectrometer operating continuously in the frequency range 0.3-9GHz to investigate the ground state of the magnetic molecule {V6} at low temperature. There exist two different varieties of {V6} molecules with small differences in the organic part and in the crystal packing. We find differences in the width and hyperfine structure of the ESR line in the two compounds. However, the central frequency of the broad ESR line measured vs H down to 0.3 GHz shows a linear behavior in both compounds indicating a g value close to 2 and a zero field gap no larger than 30 x 10(-3) K. The result is in contrast with a level scheme for the ground state previously reported for one of the two varieties of {V6}. We propose an alternative scenario for the structure of the magnetic ground state. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3545806]

URL<Go to ISI>://000289949000330
DOI10.1063/1.3545806
Alternate JournalJ. Appl. Phys.