Email: diana.mahalu@weizmann.ac.il   Title: Ph.D.   Tel: +972-8-934-2528   Fax: +972-8-934-4477   Building: Braun   Room: C217

 Research Interests:

Electron Beam Lithography

Processing of state of the art ulta small structures which include submicron active areas, air briges and T- gates produced on III-V materials by Electron beam lithography (EBL). EBL is used for research into the scaling limits of integrated circuits and studies of quantum effects and other novel physics phenomena at very small dimensions.

A typical application is the study of the Aharanov-Bohm effect, where electrons traveling along two different paths about a micrometer in length can interfere constructively or destructively, depending on the strength of an applied magnetic field. Other applications include devices to study ballistic electron effects, quantization of electron energy levels in very small structures, and single electron transistors. To see these effects typically requires minimum feature sizes of 100 nm or less, as well as operation at cryogenic temperatures.

 Publications:

• "Unexpected behavior in a two-path electron interferometer"
  Neder I, Heiblum M, Levinson Y, Mahalu D, Umansky V
  PHYSICAL REVIEW LETTERS 96 (1): Art. No. 016804 JAN 13 2006

• "Measurement of the conductance of single conjugated molecules"
  Dadosh T, Gordin Y, Krahne R, Khivrich I, Mahalu D, Frydman V, Sperling J, Yacoby A, Bar-Joseph I
  NATURE 436 (7051): 677-680 AUG 4 2005

• "Crossover from 'mesoscopic' to 'universal' phase for electron transmission in quantum dots"
  Avinun-Kalish M, Heiblum M, Zarchin O, Mahalu D, Umansky V
  NATURE 436 (7050): 529-533 JUL 28 2005

• "Localization of fractionally charged quasi-particles"
  Martin J, Ilani S, Verdene B, Smet J, Umansky V, Mahalu D, Schuh D, Abstreiter G, Yacoby A
  SCIENCE 305 (5686): 980-983 AUG 13 2004