Exchange coupling between iron layers separated by bcc copper

Coupling Between Iron Layers Separated by BCC Copper

The exchange coupling between Fe layers separated by BCC Cu is calculated for Fe/Cu/Fe (001) trilayers. It is shown that the coupling is basically regulated by three extrema of the bulk BCC Cu Fermi surface. The contributions from those extrema are all of the same order of magnitude, but that associated with the " belly " at the Γ-point dominates. The calculated temperature dependence of the co...

Exchange coupling between two ferromagnetic electrodes separated by a graphene nanoribbon

In this study, based on the self-energy method and the total energy calculation, the indirect exchange coupling between two semi-infinite ferromagnetic strips (FM electrodes) separated by metallic graphene nanoribbons (GNRs) is investigated. In order to form a FM/GNR/FM junction, a graphitic region of finite length is coupled to the FM electrodes along graphitic zigzag or armchair interfaces of...

Exchange in bcc Helium Mixtures

don) 90, 791 (1967). J. M. Deutch and R. Zwanzig, J. Chem. Phys. 4~6 1612 (1967). J. Swift, Phys. Rev. 173, 257 (1968). See, for example, the article by D. Sette, in Physics of Simple Liquids, edited by N. H. V. Temperley, J. S. Rowlinson, and G. S. Rushbrooke (North-Holland Publishing Co. , Amsterdam, 1968), p. 327 and references cited therein. D. Atack and O. K. Rice, J. Chem. Phys. 22, 382 (...

Long-range coupling of electron-hole pairs in spatially separated organic donor-acceptor layers.

Understanding exciton behavior in organic semiconductor molecules is crucial for the development of organic semiconductor-based excitonic devices such as organic light-emitting diodes and organic solar cells, and the tightly bound electron-hole pair forming an exciton is normally assumed to be localized on an organic semiconducting molecule. We report the observation of long-range coupling of e...

Magnetic coupling in 3d transition-metal monolayers and bilayers on bcc (100) iron.