Session A3a: STM Manipulation of Single Atoms, Charges, and Spins
8:00 AM–9:48 AM, Monday, March 21, 2005
LACC Room: 515B
Sponsoring Unit:
DCMP
Chair: Robert Celotta, NIST
Abstract ID: BAPS.2005.MAR.A3a.2
Abstract: A3a.00002 : Localization of Fractionally Charged Quasi-Particles
8:36 AM–9:12 AM
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Abstract 
Author:
Amir Yacoby
(Weizmann Institute of Science, Rehovot 76100, Israel)
In this work we address several outstanding questions pertaining to the microscopic properties of the fractional quantum Hall effect: What is the nature of the particles that participate in the localization but do not contribute to transport and can fractionally charged quasi particles localize in space? Using a scanning single electron transistor we image the individual localized states in the fractional quantum Hall regime and determine the charge of the localizing particles. Highlighting the symmetry between filling factors 1/3 and 2/3, our measurements show that fractionally charged quasi particles localize in space to sub-micron dimensions with e*=e/3, where e is the electron charge. In addition, at filling factors 2/3 we follow the behavior of the fractionally charged localized states through the spin phase transition.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2005.MAR.A3a.2