| Zugriffsnummer | 23997 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Spin-injection Hall effect in a planar photovoltaic cell |
| Autor(in); Institution |
Wunderlich, Jörg; Hitachi Cambridge Laboratory, Cambridge, UK; Institute of Physics ASCR, Praha, CZECH REPUBLIC
Irvine, A. C.; University of Cambridge, Microelectronics Research Centre, Cavendish Laboratory, Cambridge, UK
Sinova, Jairo; Institute of Physics ASCR, Praha, CZECH REPUBLIC; Texas A&M University, Department of Physics, Texas, USA
Park, B. G.; Hitachi Cambridge Laboratory, Cambridge, UK
Zarbo, L. P.; Texas A&M University, Department of Physics, Texas, USA
Xu, X. L.; Hitachi Cambridge Laboratory, Cambridge, UK
Kästner, Bernd; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Nov.aacute.k, V.; Institute of Physics of the AS CR, Praha, CZECH REPUBLIC
Jungwirth, T.; Institute of Physics of the AS CR, Praha, Institute of Physics of the AS CR, Praha, CZECH REPUBLIC; University of Nottingham, School of Physics and Astronomy, Nottingham, UK
|
| Quelle/Jahr | Nature Physics: 5 (2009), 9, 675 - 681 |
| ISSN | 1745-2473 (PRINT) ; 1745-2481 (ONLINE) |
| DOI | |
| Verlag | Basingstoke: Nature Publishing Group |
| Klassifikationscode | PACS: 75.50.Pp ; PACS: 81.05.Ea ; PACS: 85.75.Hh |
| Zusammenfassung | Electrical detection of spin-polarized transport in semiconductors is one of the key prerequisites for successful incorporation of spin in semiconductor microelectronics. The present schemes are based on spin-dependent transport effects within the spin generation region in the semiconductor, or on non-local detection outside the spin-injection area using a ferromagnet attached to the semiconductor. Here, we report that polarized injection of carriers can be detected by transverse electrical signals directly along the semiconducting channel, both inside and outside the injection area, without disturbing the spin-polarized current or using magnetic elements. Our planar p-n diode microdevices enable us to demonstrate Hall effect symmetries and large magnitudes of the measured effect. Supported by microscopic calculations, we infer that the observed spin-injection Hall effect reflects spin dynamics induced by an internal spin-orbit field and is closely related to the anomalous and spin Hall effects. The spin-injection Hall effect is observed up to high temperatures and our devices represent a realization of a non-magnetic spin-photovoltaic polarimeter that directly converts polarization of light into transverse voltage signals. |
