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Title:
Particle-hole symmetry and the nature of the composite fermion

Speaker:
Son Thanh Dam

Abstract:
I will describe the new picture of the half-filled Landau level, according to which the composite fermion is a massless Dirac fermion in the limit of vanishing Landau-level mixing. Such a fermion is characterized by a Berry phase of pi around the Fermi disk. Physical consequences of the new picture are outlined.

Link:
http://scgp.stonybrook.edu/video_portal/video.php?id=2577

Workshop:
Simons- Workshop: Geometry of Quantum States in Condensed Matter Systems