Electron localization into spin-polaron state in MnSi

Electron localization into spin-polaron state in MnSi

Strong electron localization into a bound state has been found in both paramagnetic and ferromagnetic states of the transition metal compound MnSi by muon spin-rotation spectroscopy in magnetic fields up to 7 T and from 2 K to room temperature. This bound state, with a characteristic radius R≈0.4 nm and net spin S=24±2, is consistent with confinement of the electron’s wave function within rough...

Studies into Electron Spin Exchange

Spin-dependent polaron recombination in conjugated polymers.

We simulate the interchain polaron recombination process in conjugated polymer systems using a nonadiabatic molecular dynamics method, which allows for the coupled evolution of the nuclear degrees of freedom and multiconfigurational electronic wavefunctions. Within the method, the appropriate spin symmetry of the electronic wavefunction is taken into account, thus allowing us to distinguish bet...

Polaron Spin Current Transport in Organic Semiconductors

Shun Watanabe∗,1 Kazuya Ando∗ †,2, 3, 4 Keehoon Kang, Sebastian Mooser, Yana Vaynzof, Hidekazu Kurebayashi, 4 Eiji Saitoh, 5, 6, 7 and Henning Sirringhaus‡1 Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom Department of Applied Physics and Physico-Informatics, Keio University, Yokohama 223-8522, Japan Institute for Materials Research, Tohoku...

Differentiation between polaron-pair and triplet-exciton polaron spin-dependent mechanisms in organic light-emitting diodes by coherent spin beating

Pulsed electrically detected magnetic resonance offers a unique avenue to distinguish between polaronpair (PP) and triplet-exciton polaron (TEP) spin-dependent recombination, which control the conductivity and magnetoresistivity of organic semiconductors. Which of these two fundamental processes dominates depends on carrier balance: by injecting surplus electrons we show that both processes sim...