Dipolar broadening and exchange narrowing of EPR lines from the paramagnetic centers distributed on a solid surface

Authors
Atsarkin, VA Vasneva, GA Demidov, VV Dzheparov, FS Odintsov, BM Clarkson, RB
Citation
Va. Atsarkin et al., Dipolar broadening and exchange narrowing of EPR lines from the paramagnetic centers distributed on a solid surface, JETP LETTER, 72(7), 2000, pp. 369-372
Citations number
13
Categorie Soggetti
Physics
Journal title
JETP LETTERS
ISSN journal
00213640 → ACNP
Volume
72
Issue
7
Year of publication
2000
Pages
369 - 372
Database
ISI
SICI code
0021-3640(2000)72:7<369:DBAENO>2.0.ZU;2-0
Abstract
Experiments with char samples provide support for the theory of EPR line sh ape in a system of surface paramagnetic centers with dipole-dipole interact ions. It is also demonstrated that, if a strong Heisenberg exchange dominat es over the dipole-dipole interactions, the EPR line of a two-dimensional s ystem narrows and acquires Lorentzian shape, similar to the three-dimension al case. (C) 2000 MAIK "Nauka/Interperiodica".