L
Lars Bergqvist
Researcher at Royal Institute of Technology
Publications - 90
Citations - 4205
Lars Bergqvist is an academic researcher from Royal Institute of Technology. The author has contributed to research in topics: Magnetic semiconductor & Magnetization. The author has an hindex of 32, co-authored 90 publications receiving 3714 citations. Previous affiliations of Lars Bergqvist include SERC Reliability Corporation & Forschungszentrum Jülich.
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Journal ArticleDOI
First-principles theory of dilute magnetic semiconductors
Kazunori Sato,Lars Bergqvist,Josef Kudrnovský,Peter H. Dederichs,Olle Eriksson,Ilja Turek,Biplab Sanyal,Georges Bouzerar,Hiroshi Katayama-Yoshida,Van An Dinh,Tetsuya Fukushima,Hidetoshi Kizaki,Rudolf Zeller +12 more
TL;DR: In this article, a review summarizes recent first-principles investigations of the electronic structure and magnetism of dilute magnetic semiconductors (DMSs), which are interesting for applications in spintronics.
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Magnetic Percolation in Diluted Magnetic Semiconductors
TL;DR: It is demonstrated that the magnetic properties of diluted magnetic semiconductors are dominated by short ranged interatomic exchange interactions that have a strong directional dependence, and that the measured critical temperatures should be very sensitive to details in the sample preparation, in agreement with observations.
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Resistive Graphene Humidity Sensors with Rapid and Direct Electrical Readout
Anderson D. Smith,Karim Elgammal,Frank Niklaus,Anna Delin,Anna Delin,Andreas Fischer,Sam Vaziri,Fredrik Forsberg,Mikael Råsander,Mikael Råsander,Håkan Wilhelm Hugosson,Lars Bergqvist,Stephan Schröder,Satender Kataria,Mikael Östling,Max C. Lemme,Max C. Lemme +16 more
TL;DR: This work demonstrates resistive humidity sensing using a single-layer graphene patch placed on top of a SiO2 layer on a Si wafer.
Journal ArticleDOI
Resistive graphene humidity sensors with rapid and direct electrical readout
Anderson D. Smith,Karim Elgammal,Frank Niklaus,Anna Delin,Anna Delin,Andreas Fischer,Sam Vaziri,Fredrik Forsberg,Mikael Råsander,Mikael Råsander,Håkan Wilhelm Hugosson,Lars Bergqvist,Stephan Schröder,Satender Kataria,Mikael Östling,Max C. Lemme,Max C. Lemme +16 more
TL;DR: In this paper, the authors demonstrate humidity sensing using a change of the electrical resistance of single-layer chemical vapor deposited (CVD) graphene that is placed on top of a SiO2 layer on a Si wafer.
Journal Article
Vanishing Magnetic Interaction in Ferromagnetic Thin Films
Jonathan Hunter Dunn,Olof Karis,Cecilia Andersson,Dimitri Arvanitis,Roger Carr,Igor A. Abrikosov,Biplab Sanyal,Lars Bergqvist,Olle Eriksson +8 more
TL;DR: In this article, the magnetic and structural properties of ultra-thin 3D transition metals films have been investigated, in particular Fe, Ni and Co films, by performing XMCD on Fe/Ag(100) and observing a spin reorientation from in-plane to out-ofplane as the Fe thickness is lowered.