77 citations · 160 across the 11 of their papers we have counts for
11 papers
Feasibility study of continuous electronic Pomeranchuk cooling with a flavor-degenerate Wigner crystal
Robin J. Dolleman, Ammon Fischer, Lennart Klebl +5
Achieving sub-millikelvin electron temperatures in nanoelectronic devices could unveil new transport phenomena, extend quantum coherence times, and enhance the precision of quantum…
Gate-tunable Josephson diodes in magic-angle twisted bilayer graphene
A. Rothstein, R. J. Dolleman, L. Klebl +8
We report low-temperature measurements of two adjacent, gate-defined Josephson junctions (JJs) in magic-angle twisted bilayer graphene (MATBG) at a moiré filling factor near $ν= -2…
Tailoring hBN's Phonon Polaritons with the Plasmonic Phase-Change Material In3SbTe2
Lina Jäckering, Aaron Moos, Lukas Conrads +8
Polaritons in van-der-Waals materials (vdWM) promise high confinement and multiple tailoring options by optical structures, e.g., resonators, launching structures and lenses. These…
Gate-defined single-electron transistors in twisted bilayer graphene
Alexander Rothstein, Ammon Fischer, Anthony Achtermann +12
Twisted bilayer graphene (tBLG) near the magic angle is a unique platform where the combination of topology and strong correlations gives rise to exotic electronic phases. These ph…
Super-resolution imaging of nanoscale inhomogeneities in hBN-covered and encapsulated few-layer graphene
Lina Jäckering, Konstantin G. Wirth, Lukas Conrads +9
Encapsulating few-layer graphene (FLG) in hexagonal boron nitride (hBN) can cause nanoscale inhomogeneities in the FLG, including changes in stacking domains and topographic defect…
Negative electronic compressibility in charge islands in twisted bilayer graphene
Robin J. Dolleman, Alexander Rothstein, Ammon Fischer +8
We report on the observation of negative electronic compressibility in twisted bilayer graphene for Fermi energies close to insulating states. To observe this negative compressibil…
Band gap formation in commensurate twisted bilayer graphene/hBN moiré lattices
Alexander Rothstein, Christoph Schattauer, Robin J. Dolleman +8
We report on the investigation of periodic superstructures in twisted bilayer graphene (tBLG) van-der-Waals heterostructures, where one of the graphene layers is aligned to hexagon…
Spin and Charge Fluctuation Induced Pairing in ABCB Tetralayer Graphene
Ammon Fischer, Lennart Klebl, Jonas B. Profe +5
Motivated by the recent experimental realization of ABCB stacked tetralayer graphene [Wirth et al., ACS Nano 16, 16617 (2022)], we study correlated phenomena in moiré-less graphene…
Experimental observation of ABCB stacked tetralayer graphene
Konstantin G. Wirth, Jonas B. Profe, Alexander Rothstein +10
In tetralayer graphene, three inequivalent layer stackings should exist, however, only rhombohedral (ABCA) and Bernal (ABAB) stacking have so far been observed. The three stacking…
Tunable interdot coupling in few-electron bilayer graphene double quantum dots
Luca Banszerus, Alexander Rothstein, Eike Icking +5
We present a highly controllable double quantum dot device based on bilayer graphene. Using a device architecture of interdigitated gate fingers, we can control the interdot tunnel…
Electron-hole crossover in gate-controlled bilayer graphene quantum dots
Luca Banszerus, Alexander Rothstein, Thomas Fabian +10
Electron and hole Bloch states in gapped bilayer graphene exhibit topological orbital magnetic moments with opposite signs near the band edges, which allows for tunable valley-pola…