Prof. Palevski Alexander

  
Affiliation:School of Physics and Astronomy
Kaplun - Physics building
room 004
Tel:  (972)-3-6409456
(972)-3-6408193
 
Email: apalev@tau.ac.il
 
Personal Website:

 
Postal Address:School of Physics and Astronomy
Tel Aviv University
Tel Aviv 69978

Research Interest

Quantum Transport in Nanostructures:

  1. One-dimensional quantum wires
    We investigate electronic transport properties of V-grooved quantum wires at low temperatures. In particular we focus our research on weakly disordered quasi-ballistic wires exhibiting Luttinger liquid behavior. We also investigate dephasing effect in Aharonov Bohm rings and the temperature dependence of long disordered quantum wires exhibiting activated behavior at very low temperatures.
  2. Superconductor proximity effect in ferromagnetic junctions and bilayers
    We investigate the direct and inverse proximity effect in ferromagnet superconductor junctions and bilayers. In transport experiments we observe oscillations of the critical current when the thickness of the ferromagnetic layers is varied. The theory based on the formation of the π-junction in Josephson coupled structures containing ferromagnetic layers was verified.
    Our group in collaboration with the group from Stanford University was the first to observe the magnetization induced in the superconductor due to so-called spin screening effect.
  3. Quantum Phase Transitions in ultrasmall superconductor cylinders
    Our experimental groups in collaboration with the colleagues in WIS (Dr. H. Shtrikman and Prof. M. Heiblum) developed a new technology to fabricate superconducting nanocylinders with the diameters as small as 50 nm. The quantum phase transition was recently observed by our group in these structures  
  4. Mesoscopic phenomena in SrTiO3/LaAlO3 interfaces
    We investigate low temperature properties of recently discovered two-dimensional electron gas formed at the interface of two wide gap insulators SrTiO3/LaAlO3. The analysis of a variety of the observed mesoscopic effect allowed us to elucidate the mechanism of the dephasing and to determine the dephasing rate and spin orbit scattering rate. This research is performed in collaboration with the group of Prof. Y. Dagan.

 

 

 

 

 

 

 

 

 

 

 

The typical nanostructures fabricated in our laboratory using the the nanofabrication facilities in the TAU Nano center: 1D quantum embedded in Aharonov Bohm interferometer (left) and Al nanocylinder with contacts (right).

 

Selected Publications


  • M. Ben Shalom, M. Sachs, D. Rakhmilevitch, A. Palevski, and Y. Dagan Tuning Spin-Orbit Coupling and Superconductivity at the SrTiO3/LaAlO3 Interface: A Magnetotransport Study Phys. Rev. Lett. 104, 126802 (2010).
  • Jing Xia, V. Shelukhin, M. Karpovski, A. Kapitulnik, and A. Palevski Inverse Proximity Effect in Superconductor-Ferromagnet Bilayer Structures Phys. Rev. Lett. 102, 087004 (2009).
  • E. Levy, A. Tsukernik, M. Karpovski, A. Palevski, B. Dwir, E. Pelucchi, A. Rudra, E. Kapon, Y. Oreg Luttinger liquid behavior in weakly disordered quantum wires, Phys. Rev. Lett. 97, 196802 (2006).
  • Y. Blum, A. Tsukernik, M. Karpovski and A. Palevski, Oscillations of the critical current in Nb-Cu-Ni-Cu-Nb junctions, Phys. Rev. Lett.89, 187004-(1-4), (2002).