Two-dimensional electron systems
Over the past decades, two-dimensional electron systems have been the stage for
a large number of discoveries, of which the quantum Hall effects are the most
remarkable. As the quality of samples based on GaAs/AlGaAs heterostructures
improved over time, many intricate ground states have been observed and
analyzed theoretically. Our work in this area has focused on the physics of
higher Landau levels, including electronic liquid-crystal states (stripe and
bubble phases), negative Coulomb drag, non-Abelian quasiparticle statistics at
filling factor 5/2, as well as microwave-induced zero-resistance states.
Currently, our interests also include the physics of the two-dimensional
electron system in graphene (monolayers of graphite) which has recently been
realized experimentally.
Grants
Selected publications
- E. Mariani, F. von Oppen
Flexural phonons in free-standing graphene
Phys. Rev. Lett. 100, 076801 (2008)
PDF
- E. Mariani, L.I. Glazman, A. Kamenev, F. von Oppen
Zero-bias anomaly in the tunneling density of states of
graphene
Phys. Rev. B 76, 165402 (2007)
PDF
- J. Dietel, L. Glazman, F. Hekking, F. von Oppen
Microwave photoconductivity of two-dimensional electron systems with unidirectional
periodic modulation
Phys. Rev. B 71, 045329 (2005)
PDF
- I.V. Gornyi, A.D. Mirlin, F. von Oppen
Coulomb drag in high Landau levels
Phys. Rev. B 70, 245302 (2004)
PDF
- A. Stern, F. von Oppen, E. Mariani
Geometric phases and quantum entanglement as building blocks for
nonabelian quasiparticle statistics
Phys. Rev. B 70, 205338 (2004)
PDF
- M.E. Raikh, F. von Oppen
Coulomb Drag for Strongly Localized Electrons: Pumping
Mechanism
Phys. Rev. Lett. 89, 106601 (2002)
PDF
- F. von Oppen, S.H. Simon, A. Stern
Oscillating sign of drag in high Landau levels
Phys. Rev. Lett. 87, 106803 (2001)
PDF
Link to:
Complete list of publications