Department of Condensed Matter Physics
Moty Heiblum, Head
The scientific activity of the department is mainly concentrated around the experimental and theoretical research in quantum solid state physics. It includes experimental research of mesoscopic physics, quantum Hall physics, high temperature superconductors, two and one dimensional superconductors, metal-insulator transition, carbon nanotubes, semiconductor nanowires,and study of material growth. The theoretical efforts concentrate on similar subjects with added work on disordered materials, cold atoms, and quantum optics.
The Braun Center for sub micron research is an integral part of the department. It is a modern and well equipped center, with growth (three MBE's) and characterization systems, which allows to conduct experiments on sub micron semiconductor structures under high magnetic filed, normal and high temperature superconductors, and nanowires made of carbon nanotubes and semiconductor nanowires.
I. Bar-Joseph
Optical spectroscopy of the two-dimensional electron gas in zero and strong magnetic fields.
Near field spectroscopy of semiconductor heterostructures.
Electron-hole complexes in quantum wells: Dynamics and steady state properties.
A. Finkelstein
Effects of the electron-electron interaction in low dimensional and disordered systems.
Metal-insulator transition in 2D conductors.
Magnetic fluctuations in high - Tc superconductors.
Y. Gefen
Quantum dots: Interplay between Electron-Electron Interaction & Spin and Quantum Interference Effects.
The Fractional Quantum Hall Effect : Quasi-Particle Tunneling.
weak measurement and weak value in nanoscopic systems
Geometric ( Berry) Phases in the Presence of Dissipation and Quantum Computing Qubits.
Fractional charges and their fractional statistics
M. Heiblum, Yunchul Chung, Oern Zarchin, D. Mahalu, V. Umansky
- Charge and statistics of quasiparticles
- Bunching of quasiparticles
- Dilute quasiparticles and their behavior
- High frequency shot noise measurements
Interference and dephasing of electrons
M. Heiblum, M. Avinun, I. Neder, D. Rohrlich, D. Mahalu, H. Shtrikman
- Phase measurements via a double path interferometer
- Controlled dephasing via 'which path?' detector
- Interferometers functioning in a high magnetic field, Mach-Zehnder Interferometer
Atom-atom interactions in cold gasses and BEC
Resonant scattaring off photonic slabs
Non classical light.
Interaction of Squeezed Light with Atoms and Semiconductor Nanostructures
Full vector path integrals for light propagation in dielectrics.
The transmission phase shift through a quantum dot that is coupled to leads and forms a many body state (known as the Kondo resonance) is calculated. This work is related to experimental studies at the Braun Center for Submicron Research at the Weizmann I
A generalization of Hund’s rules to disordered dots.
Several aspects of disorder superconductors and normal metal - superconducting junctions are studied, including the interplay between bosons and fermions in this system.
Luttinger liquids in one-dimensional systems.
Bi-layer systems.
Experiments on materials at ultra low-temperatures.
Scanning tunneling experiments at ultra-low temperatures
Physics of electron's spin
Quantum phase transitions: General transport studies and mesoscopics of the metal-insulator, superconductor-insulator and other transitions.
Fractional and integer quantum Hall effect and related phenomena.
A. Stern
Quantum Hall effect and composite fermion theory. Electronic transport in strong magnetic fields.
Non-abelian quantum Hall states and topological quantum computation.
Double layer electronic systems.
Low density two dimensional electronic systems.
One dimensional electronic systems.
High-temperature superconductors
Magneto-optical imaging
Vortex matter phase transitions
Nano-structured superconductors
Vortex dynamics
MgB2 and NbSe2 superconductors
Scanning nano-SQUID microscopy