Publications (21)
Topographic Mapping of the Quantum Hall Liquid using a Few-Electron Bubble
G. Finkelstein, P. I. Glicofridis, R. C. Ashoori +1
A scanning probe technique was used to obtain a high-resolution map of the random electrostatic potential inside the quantum Hall liquid. A sharp metal tip, scanned above a semicon…
Imaging of Low Compressibility Strips in the Quantum Hall Liquid
G. Finkelstein, P. I. Glicofridis, S. H. Tessmer +2
Using Subsurface Charge Accumulation scanning microscopy we image strips of low compressibility corresponding to several integer Quantum Hall filling factors. We study in detail th…
Phase diffusion in graphene-based Josephson junctions
I. V. Borzenets, U. C. Coskun, S. J. Jones +1
We report on graphene-based Josephson junctions with contacts made from lead. The high transition temperature of this superconductor allows us to observe the supercurrent branch at…
Modeling Subsurface Charge Accumulation Images of a Quantum Hall Liquid
S. H. Tessmer, G. Finkelstein, P. I. Glicofridis +1
Subsurface Charge Accumulation imaging is a cryogenic scanning probe technique that has recently been used to spatially probe incompressible strips formed in a two-dimensional elec…
Chiral Quasiparticle Tunneling Between Quantum Hall Edges in Proximity with a Superconductor
M. T. Wei, A. W. Draelos, A. Seredinski +10
We study a two-terminal graphene Josephson junction with contacts shaped to form a narrow constriction, less than 100nm in length. The contacts are made from type II superconductin…
Persistent Orbital Degeneracy in Carbon Nanotubes
A. Makarovski, L. An, J. Liu +1
The quantum-mechanical orbitals in carbon nanotubes are doubly degenerate over a large number of states in the Coulomb blockade regime. We argue that this experimental observation…