Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Böhlmann, Winfried"'
Autor:
Setzer, Annette, Esquinazi, Pablo D., Buga, Sergei, Georgieva, Milena T., Reinert, Tilo, Venus, Tom, Estrela-Lopis, Irina, Ivashenko, Andrei, Bondarenko, Maria, Böhlmann, Winfried, Meijer, Jan
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:
http://arxiv.org/abs/2112.03671
Autor:
Esquinazi, Pablo D., Precker, Christian E., Stiller, Markus, Cordeiro, Tiago R. S., Barzola-Quiquia, Jose, Setzer, Annette, Böhlmann, Winfried
Publikováno v:
Quantum Studies: Mathematics and Foundations 1-13 (2017)
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 obta
Externí odkaz:
http://arxiv.org/abs/1709.00259
Akademický článek
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Autor:
Precker, Christian E., Esquinazi, Pablo D., Champi, Ana, Barzola-Quiquia, José, Zoraghi, Mahsa, Muiños-Landin, Santiago, Setzer, Annette, Böhlmann, Winfried, Spemann, Daniel, Meijer, Jan, Muenster, Tom, Baehre, Oliver, Kloess, Gert, Beth, Henning
Measuring with high precision the electrical resistance of highly ordered natural graphite samples from a Brazil mine, we have identified a transition at $\sim$350~K with $\sim$40~K transition width. The step-like change in temperature of the resista
Externí odkaz:
http://arxiv.org/abs/1606.09425
Autor:
Setzer, Annette, Esquinazi, Pablo D., Buga, Sergei, Georgieva, Milena T., Reinert, Tilo, Venus, Tom, Estrela-Lopis, Irina, Ivashenko, Andrei, Bondarenko, Maria, Böhlmann, Winfried, Meijer, Jan
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) produced a ≲20 nm thick surface layer with magnetic order at room temperature. We measured the magnetic mome
Externí odkaz:
https://ul.qucosa.de/id/qucosa%3A85733
https://ul.qucosa.de/api/qucosa%3A85733/attachment/ATT-0/
https://ul.qucosa.de/api/qucosa%3A85733/attachment/ATT-0/
Autor:
Ariskina, Regina, Stiller, Markus, Precker, Christian E., Böhlmann, Winfried, Esquinazi, Pablo D.
Granular superconductivity at high temperatures in graphite can emerge at certain two-dimensional (2D) stacking faults (SFs) between regions with twisted (around the c-axis) or untwisted crystalline regions with Bernal (ABA…) and/or rhombohedral (A
Externí odkaz:
https://ul.qucosa.de/id/qucosa%3A87242
https://ul.qucosa.de/api/qucosa%3A87242/attachment/ATT-0/
https://ul.qucosa.de/api/qucosa%3A87242/attachment/ATT-0/
Akademický článek
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We have studied the transport properties of transmission electron microscope (TEM) lamellae obtained from a pyrolytic graphite sample of grade B (SPI-II) with electrical contacts at the edges of the graphene layers. The temperature, magnetic field, i
Externí odkaz:
http://arxiv.org/abs/1412.8573
Autor:
Dvoyashkina, Nina, Freude, Dieter, Stepanov, Alexander G., Böhlmann, Winfried, Krishna, Rajamani, Kärger, Jörg, Haase, Jürgen
Publikováno v:
In Microporous and Mesoporous Materials February 2018 257:128-134
Autor:
Wisser, Florian M., Eckhardt, Kai, Nickel, Winfried, Böhlmann, Winfried, Kaskel, Stefan, Grothe, Julia
Publikováno v:
In Materials Research Bulletin February 2018 98:231-234