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.


M. Heiblum

Fractional charges and their fractional statistics
M. Heiblum, students/postdocs, D. Mahalu, V. Umansky

  1.  Charge and statistics of quasiparticles

  2.  Bunching of quasiparticles

  3.   quasiparticles and their behavior

  4.   shot noise measurements

Interference and dephasing of electrons
M. Heiblum, students/postdocs, D. Mahalu, V. Umansky

  1.  Phase measurements via a double path interferometer

  2.  controlled dephasing

  3.  Interferometers functioning in a high magnetic field, Mach-Zehnder Interferometer

Neutral mode transport
M. Heiblum, students/postdocs, D. Mahalu, V. Umansky

  1.  downsteam and upstream neutral modes

  2.  hole conjugate states

  3.  even denomenator states

nanowires
M. Heiblum, andrey kritinin, anindya das, hadas shtrikman

  1.  InAs wires

  2.  ballistic transport

  3.  incorporation with superconductors


S. Ilani

Carbon nanoelectronics

Transport in ultra-clean carbon nanotubes

Nano-mechanics of carbon systems

Spin manipulation in carbon systems

Charge imaging on nanometer scales using scanning nanotube single electron transistors.

Two dimensional electron systems at the interface between oxides (LaAlO/SrTiO).


S. Levit

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.


Y. Oreg

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.


D. Shahar

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.


V. Umansky

Molecular Beam Epitaxy of ultra-high mobility 2D systems
V. Umansky, M. Heiblum

Electron mobility and disorder in Fractional Quantum Hall Effect
V. Umansky, M. Heiblum, I. Bar-Joseph, J. Smet

Heterostructure device physics


E. Zeldov

Scanning nano-SQUID microscopy

High-temperature superconductors

Vortex matter phase transitions

Nano-structured superconductors

Vortex dynamics

Magneto-optical imaging