Spin-Spin interactions in organic magnetoresistance probed by angle-dependent measurements

W. Wagemans, A.J. Schellekens, M. Kemper, F.L. Bloom, P.A. Bobbert, B. Koopmans

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

52 Citaten (Scopus)
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Samenvatting

The dependence of organic magnetoresistance (OMAR) on the orientation of the magnetic field has been investigated. In contrast with previous claims, a finite and systematic change in magnitude is observed when the orientation of the field is changed with respect to the sample. It is demonstrated that, to explain these effects, spin-spin interactions have to be included in the models previously suggested for OMAR. Dipole coupling and exchange coupling are introduced in combination with either an anisotropy of the orientation of the spin pairs or an anisotropy in the hyperfine fields.
Originele taal-2Engels
Artikelnummer196802
Pagina's (van-tot)196802-1/4
TijdschriftPhysical Review Letters
Volume106
Nummer van het tijdschrift19
DOI's
StatusGepubliceerd - 2011

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