Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Röösli, Marc"'
Autor:
Ginzburg, Lev V., Wu, Yuze, Röösli, Marc P., Gomez, Pedro Rosso, Garreis, Rebekka, Tong, Chuyao, Stará, Veronika, Gold, Carolin, Nazaryan, Khachatur, Kryhin, Serhii, Overweg, Hiske, Reichl, Christian, Berl, Matthias, Taniguchi, Takashi, Watanabe, Kenji, Wegscheider, Werner, Ihn, Thomas, Ensslin, Klaus
Publikováno v:
Phys. Rev. Research 5, 043088 (2023)
We measure electron transport through point contacts in an electron gas in AlGaAs/GaAs heterostructures and graphene for a range of temperatures, magnetic fields and electron densities. We find a magnetoconductance peak around B = 0. With increasing
Externí odkaz:
http://arxiv.org/abs/2308.06056
Autor:
Iwakiri, Shuichi, Ginzburg, Lev V., Röösli, Marc P., Meir, Yigal, Stern, Ady, Reichl, Christian, Berl, Matthias, Wegscheider, Werner, Ihn, Thomas, Ensslin, Klaus
Publikováno v:
Phys. Rev. Research 5, L032046 (2023)
Breaking of inversion symmetry leads to nonlinear and nonreciprocal electron transport, in which the voltage response does not invert with the reversal of the current direction. Many systems have incorporated inversion symmetry breaking into their ba
Externí odkaz:
http://arxiv.org/abs/2306.09907
Autor:
Garreis, Rebekka, Gerber, Jonas Daniel, Stará, Veronika, Tong, Chuyao, Gold, Carolin, Röösli, Marc, Watanabe, Kenji, Taniguchi, Takashi, Ensslin, Klaus, Ihn, Thomas, Kurzmann, Annika
Publikováno v:
Phys. Rev. Res. 5, 013042 (2023)
We measure telegraph noise of current fluctuations in an electrostatically defined quantum dot in bilayer graphene by real-time detection of single electron tunneling with a capacitively coupled neighboring quantum dot. Suppression of the second and
Externí odkaz:
http://arxiv.org/abs/2210.07759
Autor:
Röösli, Marc P., Hug, Michael, Nicolí, Giorgio, Märki, Peter, Reichl, Christian, Rosenow, Bernd, Wegscheider, Werner, Ihn, Thomas, Ensslin, Klaus
We report on magnetoconductance measurements through a weakly coupled quantum dot, containing roughly 900 electrons, in a wide magnetic field range from 0 T to 12 T. We find modulations of the conductance resonances in the quantum Hall regime for hig
Externí odkaz:
http://arxiv.org/abs/2112.11935
Autor:
Ginzburg, Lev V., Gold, Carolin, Röösli, Marc P., Reichl, Christian, Berl, Matthias, Wegscheider, Werner, Ihn, Thomas, Ensslin, Klaus
Publikováno v:
Phys. Rev. Research 3, 023033 (2021)
We measure electronic transport through point contacts in the high-mobility electron gas in a Ga[Al]As heterostructure at different temperatures and bulk electron densities. The conductance through all point contacts increases with increasing tempera
Externí odkaz:
http://arxiv.org/abs/2012.03570
Autor:
Röösli, Marc P., Hug, Michael, Nicolí, Giorgio, Märki, Peter, Reichl, Christian, Rosenow, Bernd, Wegscheider, Werner, Ensslin, Klaus, Ihn, Thomas
Publikováno v:
Science Advances 7, eabf5547 (2021)
We study the magneto-conductance of a $1.4~\mathrm{\mu m}$-wide quantum dot in the fractional quantum Hall regime. For a filling factor $\approx 2/3$ and $\gtrsim 1/3$ in the quantum dot the observed Coulomb resonances show a periodic modulation in m
Externí odkaz:
http://arxiv.org/abs/2005.12723
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:
Rössler, Clemens, Burkhard, Simon, Krähenmann, Tobias, Röösli, Marc, Märki, Peter, Basset, Julien, Ihn, Thomas, Ensslin, Klaus, Reichl, Christian, Wegscheider, Werner
Publikováno v:
Phys. Rev. B 90, 081302(R) (2014)
We investigate equilibrium and non-equilibrium charge-transfer processes by performing high-resolution transport spectroscopy. Using electrostatically defined quantum dots for energy-selective emission and detection, we achieved unprecedented spectra
Externí odkaz:
http://arxiv.org/abs/1403.4116