Ollefs K - Search Results

1

Extracting the Dynamic Magnetic Contrast in Time-Resolved X-ray Transmission Microscopy.

Schaffers T, Feggeler T, Pile S, Meckenstock R, Buchner M, Spoddig D, Ney V, Farle M, Wende H, Wintz S, Weigand M, Ohldag H, Ollefs K, Ney A. Schaffers T, et al. Among authors: ollefs k. Nanomaterials (Basel). 2019 Jun 28;9(7):940. doi: 10.3390/nano9070940. Nanomaterials (Basel). 2019. PMID: 31261780 Free PMC article.

2

Absence of intrinsic ferromagnetic interactions of isolated and paired Co dopant atoms in Zn1-xCoxO with high structural perfection.

Ney A, Ollefs K, Ye S, Kammermeier T, Ney V, Kaspar TC, Chambers SA, Wilhelm F, Rogalev A. Ney A, et al. Among authors: ollefs k. Phys Rev Lett. 2008 Apr 18;100(15):157201. doi: 10.1103/PhysRevLett.100.157201. Epub 2008 Apr 15. Phys Rev Lett. 2008. PMID: 18518145

3

Co-doped ZnO epitaxial films: from a Brillouin-like paramagnet to a phase-separated superparamagnetic ensemble.

Ney V, Ye S, Ollefs K, Kammermeier T, Wilhelm F, Rogalev A, Ney A. Ney V, et al. Among authors: ollefs k. J Nanosci Nanotechnol. 2010 Sep;10(9):5958-63. doi: 10.1166/jnn.2010.2590. J Nanosci Nanotechnol. 2010. PMID: 21133133

4

Element-specific magnetic hysteresis of individual 18 nm Fe nanocubes.

Kronast F, Friedenberger N, Ollefs K, Gliga S, Tati-Bismaths L, Thies R, Ney A, Weber R, Hassel C, Römer FM, Trunova AV, Wirtz C, Hertel R, Dürr HA, Farle M. Kronast F, et al. Among authors: ollefs k. Nano Lett. 2011 Apr 13;11(4):1710-5. doi: 10.1021/nl200242c. Epub 2011 Mar 10. Nano Lett. 2011. PMID: 21391653

5

Effects of the inhomogenous co doping on the magnetoresistance of Zn1-xCo(x)O epitaxial films.

Ye S, Klar L, Ney A, Ney V, Kammermeier T, Ollefs K, Liu F, Wang G. Ye S, et al. Among authors: ollefs k. J Nanosci Nanotechnol. 2012 Feb;12(2):1054-8. doi: 10.1166/jnn.2012.4266. J Nanosci Nanotechnol. 2012. PMID: 22629894

6

Microwave soft x-ray microscopy for nanoscale magnetization dynamics in the 5-10 GHz frequency range.

Bonetti S, Kukreja R, Chen Z, Spoddig D, Ollefs K, Schöppner C, Meckenstock R, Ney A, Pinto J, Houanche R, Frisch J, Stöhr J, Dürr HA, Ohldag H. Bonetti S, et al. Among authors: ollefs k. Rev Sci Instrum. 2015 Sep;86(9):093703. doi: 10.1063/1.4930007. Rev Sci Instrum. 2015. PMID: 26429444

7

Magnetic interactions in the Zn-Co-O system: tuning local structure, valence and carrier type from extremely Co doped ZnO to ZnCo2O4.

Henne B, Ney V, Ollefs K, Wilhelm F, Rogalev A, Ney A. Henne B, et al. Among authors: ollefs k. Sci Rep. 2015 Nov 18;5:16863. doi: 10.1038/srep16863. Sci Rep. 2015. PMID: 26578268 Free PMC article.

8

The combination of micro-resonators with spatially resolved ferromagnetic resonance.

Schaffers T, Meckenstock R, Spoddig D, Feggeler T, Ollefs K, Schöppner C, Bonetti S, Ohldag H, Farle M, Ney A. Schaffers T, et al. Among authors: ollefs k. Rev Sci Instrum. 2017 Sep;88(9):093703. doi: 10.1063/1.4996780. Rev Sci Instrum. 2017. PMID: 28964194

9

Europium Cyclooctatetraene Nanowire Carpets: A Low-Dimensional, Organometallic, and Ferromagnetic Insulator.

Huttmann F, Rothenbach N, Kraus S, Ollefs K, Arruda LM, Bernien M, Thonig D, Delin A, Fransson J, Kummer K, Brookes NB, Eriksson O, Kuch W, Michely T, Wende H. Huttmann F, et al. Among authors: ollefs k. J Phys Chem Lett. 2019 Mar 7;10(5):911-917. doi: 10.1021/acs.jpclett.8b03711. Epub 2019 Feb 14. J Phys Chem Lett. 2019. PMID: 30717591

10

A full gap above the Fermi level: the charge density wave of monolayer VS₂.

van Efferen C, Berges J, Hall J, van Loon E, Kraus S, Schobert A, Wekking T, Huttmann F, Plaar E, Rothenbach N, Ollefs K, Arruda LM, Brookes N, Schönhoff G, Kummer K, Wende H, Wehling T, Michely T. van Efferen C, et al. Among authors: ollefs k. Nat Commun. 2021 Nov 25;12(1):6837. doi: 10.1038/s41467-021-27094-x. Nat Commun. 2021. PMID: 34824213 Free PMC article.

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