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LI Glazman

Publications and source records attributed to LI Glazman.

At least 19 recordsLinked to original sources
PubMed2000

Oscillatory exchange coupling and positive magnetoresistance in epitaxial oxide heterostructures

Oscillation in the exchange coupling between ferromagnetic La(2/3)Ba(1/3)MnO3 layers with paramagnetic LaNiO3 spacer layer thickness has been observed in epitaxial heterostructures of the two oxides. This behavior is explained within the RKKY model employing an ab initio calculated band structure of LaNiO3, taking into account strong electron scattering in the spacer. Antiferromagnetically coupled superlattices exhibit a positive current-in-plane magnetoresistance.

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PubMed2000

g-factors of discrete levels in nanoparticles

Spin-orbit scattering suppresses Zeeman splitting of individual energy levels in small metal particles. This suppression becomes significant when the spin-orbit scattering rate tau(-1)(so) is comparable to the quantum level spacing delta. At small deltatau(so) the g-factor exhibits strong mesoscopic fluctuations. We find the shape of their distribution function using the random matrix theory, and express its parameters in terms of physical characteristics: tau(so), delta, the electron mean free path l, and the particle size L. At deltatau(so)-->0 the average g-factor levels off at a small value g approximately (l/L)(1/2). However, in 2D quantum dots the g-factor is strongly enhanced by spin-orbit coupling.

Journal Article↗