Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Braem, Beat"'
Autor:
Gold, Carolin, Bräm, Beat A., Steinacher, Richard, Krähenmann, Tobias, Hofmann, Andrea, Reichl, Christian, Wegscheider, Werner, Shayegan, Mansour, Ensslin, Klaus, Ihn, Thomas
Publikováno v:
Phys. Rev. Research 3, 013287 (2021)
We image equilibrium and non-equilibrium transport through a two-dimensional electronic cavity using scanning gate microscopy (SGM). Injecting electrons into the cavity through a quantum point contact close to equilibrium, we raster-scan a weakly inv
Externí odkaz:
http://arxiv.org/abs/2101.05723
Autor:
Gold, Carolin, Bräm, Beat A., Ferguson, Michael S., Krähenmann, Tobias, Hofmann, Andrea, Steinacher, Richard, Fratus, Keith R., Reichl, Christian, Wegscheider, Werner, Weinmann, Dietmar, Ensslin, Klaus, Ihn, Thomas
Publikováno v:
Phys. Rev. Research 3, 032005 (2021)
We use Scanning Gate Microscopy to study electron transport through an open, gate-defined resonator in a Ga(Al)As heterostructure. Raster-scanning the voltage-biased metallic tip above the resonator, we observe distinct conductance modulations as a f
Externí odkaz:
http://arxiv.org/abs/2011.13869
Autor:
Röösli, Marc P., Brem, Lars, Kratochwil, Benedikt, Nicolí, Giorgio, Braem, Beat A., Hennel, Szymon, Märki, Peter, Berl, Matthias, Reichl, Christian, Rosenow, Bernd, Wegscheider, Werner, Ensslin, Klaus, Ihn, Thomas
Publikováno v:
Phys. Rev. B 101, 125302 (2020)
We measure the magneto-conductance through a micron-sized quantum dot hosting about 500 electrons in the quantum Hall regime. In the Coulomb blockade, when the island is weakly coupled to source and drain contacts, edge reconstruction at filling fact
Externí odkaz:
http://arxiv.org/abs/1910.12525
Autor:
Nicolí, Giorgio, Märki, Peter, Bräm, Beat A., Röösli, Marc P., Hennel, Szymon, Hofmann, Andrea, Reichl, Christian, Wegscheider, Werner, Ihn, Thomas, Ensslin, Klaus
Publikováno v:
Rev. Sci. Instr. 90, 113901 (2019)
Experiments performed at a temperature of a few millikelvin require effective thermalization schemes, low-pass filtering of the measurement lines and low-noise electronics. Here, we report on the modifications to a commercial dilution refrigerator wi
Externí odkaz:
http://arxiv.org/abs/1909.10906
Autor:
Braem, Beat A, Pellegrino, Francesco M D, Principi, Alessandro, Röösli, Marc, Gold, Carolin, Hennel, Szymon, Koski, Jonne V, Berl, Matthias, Dietsche, Werner, Wegscheider, Werner, Polini, Marco, Ihn, Thomas, Ensslin, Klaus
Publikováno v:
Phys. Rev. B 98, 241304 (2018)
We measure transport through a Ga[Al]As heterostructure at temperatures between 0.1 K and 30 K. Increasing the temperature enhances the electron-electron scattering rate and viscous effects in the two-dimensional electron gas arise. To probe this reg
Externí odkaz:
http://arxiv.org/abs/1807.03177
Autor:
Braem, Beat A., Krähenmann, Tobias, Hennel, Szymon, Reichl, Christian, Wegscheider, Werner, Ensslin, Klaus, Ihn, Thomas
Publikováno v:
Phys. Rev. B 93, 115442 (2016)
We use the voltage biased tip of a scanning force microscope at a temperature of 35\,mK to locally induce the fractional quantum Hall state of $\nu=1/3$ in a split-gate defined constriction. Different tip positions allow us to vary the potential land
Externí odkaz:
http://arxiv.org/abs/1603.03567
Autor:
Hennel, Szymon, Braem, Beat A., Baer, Stephan, Tiemann, Lars, Sohi, Pirouz, Wehrli, Dominik, Hofmann, Andrea, Reichl, Christian, Wegscheider, Werner, Rössler, Clemens, Ihn, Thomas, Ensslin, Klaus, Rudner, Mark S., Rosenow, Bernd
Publikováno v:
Phys. Rev. Lett. 116, 136804 (2016)
In a quantum Hall ferromagnet, the spin polarization of the two-dimensional electron system can be dynamically transferred to nuclear spins in its vicinity through the hyperfine interaction. The resulting nuclear field typically acts back locally, mo
Externí odkaz:
http://arxiv.org/abs/1511.03593
Autor:
Spodaryk, Mariana, Shcherbakova, Larisa, Sameljuk, Anatoly, Zakaznova-Herzog, Valentina, Braem, Beat, Holzer, Marco, Mauron, Philippe, Remhof, Arndt, Solonin, Yurii, Züttel, Andreas
Publikováno v:
In Journal of Alloys and Compounds 15 September 2014 607:32-38
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Autor:
R����sli, Marc P., Brem, Lars, Kratochwil, Benedikt, Nicol��, Giorgio, Braem, Beat A., Hennel, Szymon, M��rki, Peter, Berl, Matthias, Reichl, Christian, Rosenow, Bernd, Wegscheider, Werner, Ensslin, Klaus, Ihn, Thomas
We measure the magneto-conductance through a micron-sized quantum dot hosting about 500 electrons in the quantum Hall regime. In the Coulomb blockade, when the island is weakly coupled to source and drain contacts, edge reconstruction at filling fact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69f3288060b974dbf2e8458f7bede51f
http://arxiv.org/abs/1910.12525
http://arxiv.org/abs/1910.12525