168 citations · 454 across the 7 of their papers we have counts for
6 papers · 1 filter
Coupling of a locally implanted rare-earth ion ensemble to a superconducting micro-resonator
I. Wisby, S. E. de Graaf, R. Gwilliam +5
We demonstrate the coupling of rare-earth ions locally implanted in a substrate (Gd in AlO) to a superconducting NbN lumped-element micro-resonator. The hybrid d…
Quantum Hall Effect and Quantum Point Contact in Bilayer-Patched Epitaxial Graphene
C. J. Chua, M. R. Connolly, A. Lartsev +10
We study an epitaxial graphene monolayer with bilayer inclusions via magnetotransport measurements and scanning gate microscopy at low temperatures. We find that bilayer inclusions…
A near-field scanning microwave microscope based on a superconducting resonator for low power measurements
S. E. de Graaf, A. V. Danilov, A. Adamyan +1
We report on the design and performance of a cryogenic (300 mK) near-field scanning microwave microscope. It uses a microwave resonator as the near-field sensor, operating at a fre…
Precision comparison of the quantum Hall effect in graphene and gallium arsenide
T. J. B. M. Janssen, J. M. Williams, N. E. Fletcher +6
The half-integer quantum Hall effect in epitaxial graphene is compared with high precision to the well known integer effect in a GaAs/AlGaAs heterostructure. We find no difference…
Anomalously strong pinning of the filling factor nu=2 in epitaxial graphene
T. J. B. M. Janssen, A. Tzalenchuk, R. Yakimova +4
We explore the robust quantization of the Hall resistance in epitaxial graphene grown on Si-terminated SiC. Uniquely to this system, the dominance of quantum over classical capacit…
Circular ac Hall Effect
J. Karch, P. Olbrich, M. Schmalzbauer +13
We report the observation of the circular ac Hall effect where the current is solely driven by the crossed ac electric and magnetic fields of circularly polarized radiation. Illumi…