72 citations · 310 across the 15 of their papers we have counts for
12 papers · 1 filter
Discrete states and ballistic interference in quantum wires approaching macroscopic lengths
Henok Weldeyesus, Taras Patlatiuk, Christian P. Scheller +4
Increasing the size of a system showing quantum effects is a difficult task limited by decoherence, a diminishing quantum level spacing, and the effects of disorder spoiling the qu…
A scalable non-superconducting tunnel junction technology
Juho Luomahaara, Kristupas Razas, Omid Sharifi Sedeh +15
Tunnel junctions are one of the key elements of chip-scale microsystems serving various technologies from classical microelectronics to quantum information. Aluminium and its oxide…
Microkelvin electronics on a pulse-tube cryostat with a gate Coulomb blockade thermometer
Mohammad Samani, Christian P. Scheller, Nikolai Yurttagül +8
Access to lower temperatures has consistently enabled scientific breakthroughs. Pushing the limits of \emph{on-chip} temperatures deep into the microkelvin regime would open the do…
Quantum measurement induces a many-body transition
Michael S. Ferguson, Leon C. Camenzind, Clemens Müller +5
The current revolution in quantum technologies relies on the ability to isolate, coherently control, and measure the state of quantum systems. The act of measurement in quantum mec…
Edge State Wave Functions from Momentum-Conserving Tunneling Spectroscopy
T. Patlatiuk, C. P. Scheller, D. Hill +7
We perform momentum-conserving tunneling spectroscopy using a GaAs cleaved-edge overgrowth quantum wire to investigate adjacent quantum Hall edge states. We use the lowest five wir…
Progress in cooling nanoelectronic devices to ultra-low temperatures
A. T. Jones, C. P. Scheller, J. R. Prance +3
Here we review recent progress in cooling micro/nanoelectronic devices significantly below 10 mK. A number of groups worldwide are working to produce sub-millikelvin on-chip electr…
Evolution of the quantum Hall bulk spectrum into chiral edge states
Taras Patlatiuk, Christian P. Scheller, Daniel Hill +6
One of the most intriguing and fundamental properties of topological materials is the correspondence between the conducting edge states and the gapped bulk spectrum. So far, it has…
On-and-off chip cooling of a Coulomb blockade thermometer down to 2.8 mK
M. Palma, C. P. Scheller, D. Maradan +3
Cooling nanoelectronic devices below 10 mK is a great challenge since thermal conductivities become very small, thus creating a pronounced sensitivity to heat leaks. Here, we overc…
Silver-Epoxy Microwave Filters and Thermalizers for Millikelvin Experiments
C. P. Scheller, S. Heizmann, K. Bedner +5
We present Silver-epoxy filters combining excellent microwave attenuation with efficient wire thermalization, suitable for low temperature quantum transport experiments. Upon minim…
GaAs Quantum Dot Thermometry Using Direct Transport and Charge Sensing
D. Maradan, L. Casparis, T. -M. Liu +5
We present measurements of the electron temperature using gate defined quantum dots formed in a GaAs 2D electron gas in both direct transport and charge sensing mode. Decent agreem…
Evidence for Helical Nuclear Spin Order in GaAs Quantum Wires
C. P. Scheller, T. -M. Liu, G. Barak +4
We present transport measurements of cleaved edge overgrowth GaAs quantum wires. The conductance of the first mode reaches 2 e^2/h at high temperatures T > 10 K, as expected. As T…
Metallic Coulomb Blockade Thermometry down to 10 mK and below
L. Casparis, M. Meschke, D. Maradan +5
We present an improved nuclear refrigerator reaching 0.3 mK, aimed at microkelvin nanoelectronic experiments, and use it to investigate metallic Coulomb blockade thermometers (CBTs…