Phys. Rev. Lett. 92, 156401 (2004) [4 pages]Direct Measurement of the g Factor of Composite FermionsReceived 25 July 2003; published 16 April 2004 The activation gap Δ of the fractional quantum Hall states at constant fillings ν=2/3 and 2/5 has been measured as a function of the perpendicular magnetic field B. A linear dependence of Δ on B is observed while approaching the spin-polarization transition. This feature allows a direct measurement of the g factor of composite fermions which appears to be heavily renormalized by interactions and strongly sensitive to the electronic filling factor. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.156401
DOI:
10.1103/PhysRevLett.92.156401
PACS:
71.10.Pm, 72.25.Dc, 73.43.Fj
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.