Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Annette Setzer"'
Publikováno v:
Journal of Magnetism and Magnetic Materials. 565:170258
Autor:
Annette Setzer, Pablo D. Esquinazi, Sergei Buga, Milena T. Georgieva, Tilo Reinert, Tom Venus, Irina Estrela-Lopis, Andrei Ivashenko, Maria Bondarenko, Winfried Böhlmann, Jan Meijer
Publikováno v:
Materials; Volume 15; Issue 3; Pages: 1014
Materials, Vol 15, Iss 1014, p 1014 (2022)
Materials, Vol 15, Iss 1014, p 1014 (2022)
In this work, we demonstrate that cutting diamond crystals with a laser (532~nm wavelength, 0.5~mJ energy, 200~ns pulse duration at 15~kHz) produces a $\lesssim 20~$nm thick surface layer with magnetic order at room temperature. We have measured the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2efecfa5848dab3b1f9b191e2008585f
http://arxiv.org/abs/2112.03671
http://arxiv.org/abs/2112.03671
Autor:
Bernd Abel, Wolfgang Knolle, Andreas Pöppl, Pablo Esquinazi, Olesya Daikos, Tobias Lühmann, Robert Staacke, Sébastien Pezzagna, Jan Meijer, Annette Setzer, Tom Scherzer, Sergei G. Buga
Several diamond bulk crystals with a concentration of electrically neutral single substitutional nitrogen atoms of $\lesssim 80~$ppm, the so-called C- or P1-centres, were irradiated with electrons at 10 MeV energy and low fluence. The results show a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::272da0c4e99f253309cbc8f6e524552c
http://arxiv.org/abs/2108.13850
http://arxiv.org/abs/2108.13850
Autor:
Oliver Baehre, Gilbert Daniel Nessim, Pablo Esquinazi, Olga Girshevitz, Lukas Botsch, Eti Teblum, Anat Itzhak, Annette Setzer
Publikováno v:
Phase Transitions. 92:385-395
We have studied the magnetization of a recently synthesized Cu9S5 compound and found two phase transitions around room temperature. The phase transitions in the crystalline structure, chara...
Autor:
Christian E Precker, Pablo D Esquinazi, Ana Champi, José Barzola-Quiquia, Mahsa Zoraghi, Santiago Muiños-Landin, Annette Setzer, Winfried Böhlmann, Daniel Spemann, Jan Meijer, Tom Muenster, Oliver Baehre, Gert Kloess, Henning Beth
Publikováno v:
New Journal of Physics, Vol 18, Iss 11, p 113041 (2016)
Measuring with high precision the electrical resistance of highly ordered natural graphite samples from a Brazil mine, we have identified a transition at ∼350 K with ∼40 K transition width. The step-like change in temperature of the resistance, i
Externí odkaz:
https://doaj.org/article/b2a85cf423224b478051c1a77d6f760b
Autor:
Markus Stiller, Pablo Esquinazi, José Barzola-Quiquia, Winfried Böhlmann, Annette Setzer, Tiago R. S. Cordeiro, Christian E. Precker
Publikováno v:
Quantum Studies: Mathematics and Foundations. 5:41-53
In the last 43 years several hints were reported suggesting the existence of granular superconductivity above room temperature in different graphite-based systems. In this paper, some of the results are reviewed, giving special attention to those obt
Publikováno v:
Scripta Materialia. 104:91-94
The effect of an external magnetic field B on the martensite phase transformation temperature T 0 was studied for single crystalline Fe72Pd28 thin films. From in-plane and out-of-plane aligned magnetic field dependent resistance measurements under va
Autor:
Rattikorn Yimnirun, Patrick Ziegler, Wolfgang Kreuzpaintner, Birgit Wiedemann, Peter Böni, Amitesh Paul, Annette Setzer, Pablo Esquinazi, Neelima Paul, Peter Müller-Buschbaum, Jaru Jutimoosik
Publikováno v:
Journal of Applied Crystallography. 47:1921-1930
Fe layers with thicknesses between 5 and 100 nm were sputtered on mesoporous nanostructured anatase TiO2templates. The morphology of these hybrid films was probed with grazing-incidence small-angle X-ray scattering and X-ray reflectivity, complemente
Autor:
Gert Kloess, Annette Setzer, José Barzola-Quiquia, Markus Stiller, Tom Muenster, Mahsa Zoraghi, Irina Estrela-Lopis, Pablo Esquinazi, Tobias Lühmann
The electrical, in-plane resistance as a function of temperature $R(T)$ of bulk and mesoscopic thin graphite flakes obtained from the same batch was investigated. Samples thicker than $\sim 30$ nm show metalliclike contribution in a temperature range
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ec65c8125b675482fa87214e7e52af2
http://arxiv.org/abs/1603.06365
http://arxiv.org/abs/1603.06365
Autor:
José Barzola-Quiquia, Pablo Esquinazi, Thomas Scheike, Annette Setzer, Winfried Böhlmann, A. Ballestar
Publikováno v:
Advanced Materials. 24:5826-5831
Trying to dope graphite flakes we found that the magnetization of pure, several tens of micrometers grain size graphite powder and after a simple treatment with pure water shows clear and reproducible granular superconducting behavior with a critical