Materials in which electrons are strongly interacting with each other exhibit variety of exotic properties such as: high temperature superconductivity, colossal magnetoresistance, ferroelectricity, magneto-electric effects in multiferroic materials. Examples for such materials are: cuprates, manganites, nickelates, organic superconductors, dilute magnetic semiconductors, ferroelectrics, oxide interfaces and many more. Generally speaking, small stimulus results in a large change in one or more physical property.
In our laboratory we study the electronic structure and the nature of the phase transitions of such materials by tuning control parameters such as chemical doping, epitaxial strain, pressure, external electric or magnetic fields etc.
One of the advantages of our group is the ability to make materials and study their physical properties in one place. Our laboratory is equipped with a pulsed laser deposition facility controlled by a high pressure RHEED (reflection high energy electron diffraction), a dilution refrigerator with a 9-1-1 Tesla vector magnet, an automated low temperature measurements system equipped with He3 refrigerator and a 14 Tesla magnet, low temperature ultra-high-vacuum scanning tunneling microscope (UHV-STM).
We perform a variety of experiments such as: Magnetotransport, thermal-transport, tunneling and point contact spectroscopy, magnetometry and more. We lean on the fabrication, characterization and electron-microscopy facilities at the Tel Aviv center for nanoscience and nanotechnologies.
Systems we are currently studying are:
Oxide interface based one dimensional quantum wires
Two dimensional electron liquid formed at oxide interfaces
High temperature cuprate superconductors