24 citations · 97 across the 9 of their papers we have counts for
9 papers
Transport Through an Electrostatically Defined Quantum Dot Lattice in a Two-Dimensional Electron Gas
Srijit Goswami, M. A. Aamir, Christoph Siegert +4
Quantum dot lattices (QDLs) have the potential to allow for the tailoring of optical, magnetic and electronic properties of a user-defined artificial solid. We use a dual gated dev…
Signatures of an Anomalous Nernst Effect in a Mesoscopic Two-Dimensional Electron System
Srijit Goswami, Christoph Siegert, Michael Pepper +3
We investigate the Nernst effect in a mesoscopic two-dimensional electron system (2DES) at low magnetic fields, before the onset of Landau level quantization. The overall magnitude…
Thermoelectric Properties of Electrostatically Tunable Antidot Lattices
Srijit Goswami, Christoph Siegert, Saquib Shamim +4
We report on the fabrication and characterization of a device which allows the formation of an antidot lattice (ADL) using only electrostatic gating. The antidot potential and Ferm…
Highly enhanced thermopower in two-dimensional electron systems at milliKelvin temperatures
Srijit Goswami, Christoph Siegert, Matthias Baenninger +4
We report experimental observation of an unexpectedly large thermopower in mesoscopic two-dimensional (2D) electron systems on GaAs/AlGaAs heterostructures at sub-Kelvin temperatur…
Low Temperature Transport in Undoped Mesoscopic Structures
S. Sarkozy, K. Das Gupta, C. Siegert +6
Using high quality undoped GaAs/AlGaAs heterostructures with optically patterned insulation between two layers of gates, it is possible to investigate very low density mesoscopic r…
Field-tunable magnetic phases in a semiconductor-based two-dimensional Kondo lattice
C. Siegert, A. Ghosh, M. Pepper +4
We show the existence of intrinsic localized spins in mesoscopic high-mobility GaAs/AlGaAs heterostructures. Non-equilibrium transport spectroscopy reveals a quasi-regular distribu…