474 citations · 775 across the 17 of their papers we have counts for
17 papers
Metastable magnetic domains and the anomalous resistance peak in twisted double bilayer graphene
Zhenxiang Gao, Christopher Coleman, Silvia Lüscher +7
In graphene moirés, valley polarization gives rise to orbital magnetism, manifested as an anomalous Hall effect and resulting in Barkhausen jumps in longitudinal resistance when ch…
Remote entropy measurement in coupled quantum dots
Owen Sheekey, Tim Child, Elena Cornick +8
Recent experiments have demonstrated that measurements of the entropy change associated with the addition of electrons to semiconductor- and graphene-based quantum dots accurately…
A robust protocol for entropy measurement in mesoscopic circuits
Tim Child, Owen Sheekey, Silvia Lüscher +4
Previous measurements utilizing Maxwell relations to measure change in entropy, , demonstrated remarkable accuracy of measuring the spin-1/2 entropy of electrons in a weakly cou…
Entropy measurement of a strongly coupled quantum dot
Tim Child, Owen Sheekey, Silvia Lüscher +8
The spin 1/2 entropy of electrons trapped in a quantum dot has previously been measured with great accuracy, but the protocol used for that measurement is valid only within a restr…
Strongly correlated zero-bias anomaly in double quantum dot measurements
Rachel Wortis, Joshua Folk, Silvia Lüscher +1
Experiments in doped transition metal oxides often show suppression in the single-particle density of states at the Fermi level, but disorder-induced zero-bias anomalies in strongl…
Activation of magnetic moments in CVD-grown graphene by annealing
Hyungki Shin, Ebrahim Sajadi, Ali Khademi +2
Effects of annealing on chemical vapor deposited graphene are investigated via a weak localization magnetoresistance measurement. Annealing at \SI{300}{\celsius} in inert gases, a…
Detecting the universal fractional entropy of Majorana zero modes
Eran Sela, Yuval Oreg, Stephan Plugge +3
A pair of Majorana zero modes (MZMs) constitutes a nonlocal qubit whose entropy is . Upon strongly coupling one of the constituent MZMs to a reservoir with a continuous den…
Quantum Lifetime in Ultra-High Quality GaAs Quantum Wells: Relationship to and Impact of Density Fluctuations
Qi Qian, James R. Nakamura, Saeed Fallahi +6
We consider quantum lifetime derived from low-field Shubnikov-de Haas oscillations as a metric of quality of the two-dimensional electron gas in GaAs quantum wells that expresses l…
Influence of impurity spin dynamics on quantum transport in epitaxial graphene
Samuel Lara-Avila, Sergey Kubatkin, Oleksiy Kashuba +6
Experimental evidence from both spin-valve and quantum transport measurements points towards unexpectedly fast spin relaxation in graphene. We report magnetotransport studies of ep…
Bias-induced breakdown of electron solids in the second Landau level
Alexander V. Rossokhaty, Silvia Lüscher, Joshua A. Folk +3
Reentrant integer quantum Hall (RIQH) states are believed to be correlated electron solid phases, though their microscopic description remains unclear. As bias current increases, l…
Low-temperature illumination and annealing of ultra-high quality quantum wells
Mohammad Samani, Alexander V. Rossokhaty, Ebrahim Sajadi +5
The effects of low temperature illumination and annealing on fractional quantum Hall (FQH) characteristics of a GaAs/AlGaAs quantum well are investigated. Illumination alone, below…
Numerical study of resonant spin relaxation in quasi-1D channels
S. Luescher, S. M. Frolov, J. A. Folk
Recent experiments demonstrate that a ballistic version of spin resonance, mediated by spin-orbit interaction, can be induced in narrow channels of a high-mobility GaAs two-dimensi…
Charge rearrangement and screening in a quantum point contact
Silvia Lüscher, Lindsay S. Moore, Tomaz Rejec +3
Compressibility measurements, sensitive to charge rearrangements, are performed on a quantum point contact (QPC). Screening due to mobile charges in the QPC is quantitatively measu…
Energy spectra of quantum rings
A. Fuhrer, S. Luescher, T. Ihn +4
Ring geometries have fascinated experimental and theoretical physicists over many years. Open rings connected to leads allow the observation of the Aharonov-Bohm effect, a paradigm…
Transport properties of quantum dots with hard walls
A. Fuhrer, S. Luescher, T. Heinzel +3
Quantum dots are fabricated in a Ga[Al]As-heterostructure by local oxidation with an atomic force microscope. This technique, in combination with top gate voltages, allows us to ge…
In-plane gate single-electron transistor in Ga[Al]As fabricated by scanning probe lithography
S. Luescher, A. Fuhrer, R. Held +3
A single-electron transistor has been realized in a Ga[Al]As heterostructure by oxidizing lines in the GaAs cap layer with an atomic force microscope. The oxide lines define the bo…
Shifting a Quantum Wire through a Disordered Crystal: Observation of Conductance Fluctuations in Real Space
T. Heinzel, G. Salis, R. Held +4
A quantum wire is spatially displaced by suitable electric fields with respect to the scatterers inside a semiconductor crystal. As a function of the wire position, the low-tempera…