Structural and magnetic properties of GeMn layers; High Curie temperature ferromagnetism induced by self organized GeMn nano-columns

Autor: J. Rothman, Thibaut Devillers, Serge Tatarenko, P. Bayle Guillemaud, A. Barski, V. Poydenot, E. Bellet Amalric, M. Jamet, Richard Mattana, Joel Cibert, R. Dujardin

Publikováno v: physica status solidi (a). 204:130-135

In this paper we report on the structural and magnetic properties of GeMn layers grown on Ge(001). We show that for the optimized Mn concentration (6%) and for optimized growth temperature (close to 130 °C), GeMn samples exhibit a high Curie tempera

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::657fe7920627d625648575cda470d164
https://doi.org/10.1002/pssa.200673026

High-Curie-temperature ferromagnetism in self-organized Ge1−xMnx nanocolumns

Autor: Pascale Bayle-Guillemaud, Romain Dujardin, Joel Cibert, Alain Marty, J. Rothman, Serge Tatarenko, Edith Bellet-Amalric, A. Barski, Matthieu Jamet, Richard Mattana, Thibaut Devillers, V. Poydenot

Publikováno v: Nature Materials. 5:653-659

The emerging field of spintronics would be dramatically boosted if room-temperature ferromagnetism could be added to semiconductor nanostructures that are compatible with silicon technology. Here, we report a high-TC (>400 K) ferromagnetic phase of (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::110e050b96e884d5588dce6af3359323
https://doi.org/10.1038/nmat1686

Highly ordered germanium nanostructures grown by molecular beam epitaxy on twist-bonded silicon (001) substrates

Autor: F. Fournel, V. Poydenot, R. Dujardin, A. Barski, Jean-Luc Rouvière

Publikováno v: Journal of Crystal Growth. 278:83-87

Highly ordered germanium nanostructures are grown by molecular beam epitaxy (MBE) on molecularly bonded silicon (0 0 1) substrates. For high twist-angle-bonded substrates (twist angle as high as 20°), a one-dimensional organization of growth is indu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0aca156c28d9c001b3fe4000b210d27a
https://doi.org/10.1016/j.jcrysgro.2004.12.167

Structure and magnetism of self-organizedGe1−xMnxnanocolumns onGe(001)

Autor: Edith Bellet-Amalric, A. Barski, Salia Cherifi, Pascale Bayle-Guillemaud, Joel Cibert, V. Poydenot, Matthieu Jamet, Thibaut Devillers

Publikováno v: Physical Review B. 76

We report on the structural and magnetic properties of thin Ge(1-x)Mn(x)films grown by molecular beam epitaxy (MBE) on Ge(001) substrates at temperatures (Tg) ranging from 80°C to 200°C, with average Mn contents between 1 % and 11 %. Their crystall

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c4db0bb242780cca3a5f4f5d748f67b9
https://doi.org/10.1103/physrevb.76.205306

Strain and composition of ultrasmall Ge quantum dots studied by x-ray scattering and in situ surface x-ray absorption spectroscopy

Autor: Gilles Renaud, T. H. Metzger, V. Poydenot, M. Derivaz, S. Colonna, A. Barski, Tobias U. Schülli, Olivier Ulrich, R. Dujardin

Publikováno v: Journal of applied physics 99 (2006): 063510. doi:10.1063/1.2181277
info:cnr-pdr/source/autori:Dujardin R., Poydenot V., Schülli T. U., Renaud G., Ulrich O., Barski A., Derivaz M., Colonna S., Metzger T./titolo:Strain and Composition of Ultrasmall Ge Quantum Dots Studied by X-ray Scattering and in situ Surface X-ray Absorption Spectroscopy/doi:10.1063%2F1.2181277/rivista:Journal of applied physics/anno:2006/pagina_da:063510/pagina_a:/intervallo_pagine:063510/volume:99

Investigations of the structural properties of ultrasmall Ge dots, grown through a thin silicon oxide layer on Si(001), have been performed by combining (i) grazing incidence x-ray diffraction, (ii) grazing incidence small angle x-ray scattering (GIS

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0116ec6e5e86343a80b980a55204361e
https://doi.org/10.1063/1.2181277