Ge-Based Spin-Photodiodes for Room-Temperature Integrated Detection of Photon Helicity
Type
ArticleAuthors
Rinaldi, ChristianCantoni, Matteo
Petti, Daniela
Sottocorno, Andrea
Leone, Marco
Caffrey, Nuala M.
Sanvito, Stefano
Bertacco, Riccardo
Date
2012-05-02Permanent link to this record
http://hdl.handle.net/10754/598399
Metadata
Show full item recordAbstract
Spin-photodiodes based on Fe/MgO/Ge(001) heterostructures are reported. These devices perform the room-temperature integrated electrical detection of the spin polarization of a photocurrent generated by circularly polarized photons with a wavelength of 1300 nm, for light pulses with intensity I 0 down to 200 μW. A forward and reverse-biased average photocurrent variation of 5.9% is measured for the complete reversal of the incident light helicity. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.Citation
Rinaldi C, Cantoni M, Petti D, Sottocorno A, Leone M, et al. (2012) Ge-Based Spin-Photodiodes for Room-Temperature Integrated Detection of Photon Helicity. Advanced Materials 24: 3037–3041. Available: http://dx.doi.org/10.1002/adma.201104256.Sponsors
The authors thank J. Gazquez and M. Varela for the transmission electron microscopy analysis, and G. Isella, P. Vavassori, H. Jaffres, and A. Fert for fruitful discussions. N.M.C. and S. S. thank Ivan Rungger for making available a version of Smeagol dealing with electrodes made of different materials, and for useful discussions. This work was partially supported by Science Foundation Ireland (Grant No. 07/IN.1/I945). The Smeagol code was supported by CRANN and by KAUST (ACRAB project).Publisher
Wiley-BlackwellJournal
Advanced MaterialsISSN
0935-9648PubMed ID
22549940ae974a485f413a2113503eed53cd6c53
10.1002/adma.201104256