173 citations · 409 across the 11 of their papers we have counts for
11 papers
Spin Symmetry of the Bilayer Graphene Groundstate
Frank Freitag, Markus Weiss, Romain Maurand +2
We show nonlinear transport experiments on clean, suspended bilayer graphene that reveal a gap in the density of states. Looking at the evolution of the gap in magnetic fields of d…
Homogeneity of Bilayer Graphene
Frank Freitag, Markus Weiss, Romain Maurand +2
We present non-linear transport measurements on suspended, current annealed bilayer graphene devices. Using a multi-terminal geometry we demonstrate that devices tend to be inhomog…
Conductance fluctuations in graphene devices with superconducting contacts in different charge density regimes
F. Freitag, J. Trbovic, C. Schönenberger
Conductions fluctuations (CF) are studied in single layer graphene devices with superconducting source and drain contacts made from aluminium. The CF are found to be enhanced by su…
Spontaneously gapped ground state in suspended bilayer graphene
F. Freitag, J. Trbovic, M. Weiss +1
Bilayer graphene bears an eight-fold degeneracy due to spin, valley and layer symmetry, allowing for a wealth of broken symmetry states induced by magnetic or electric fields, by s…
Permalloy-based carbon nanotube spin-valve
H. Aurich, A. Baumgartner, F. Freitag +3
In this Letter we demonstrate that Permalloy (Py), a widely used Ni/Fe alloy, forms contacts to carbon nanotubes (CNTs) that meet the requirements for the injection and detection o…
Band-tail shape and transport near the metal-insulator transition in Si-doped Al(0.3)Ga(0.7)As
Jennifer Misuraca, Jelena Trbovic, Jun Lu +5
In the present work, an infrared LED is used to photodope MBE-grown Si:Al(0.3)Ga(0.7)As, a well known persistent photoconductor, to vary the effective electron concentration of sam…