Research Interests:

Electron fractionalization in graphene-like structures

Electron fractionalization is intimately related to topology. In one-dimensional systems, such as polyacetelene, fractionally charged states exist at domain walls between degenerate vacua. In two-dimensional systems, fractionalization exists in quantum Hall fluids, where time-reversal symmetry is broken by a large external magnetic field. Recently, there has been a tremendous effort in the search for examples of fractionalization in two-dimensional systems with time-reversal symmetry. In this research work, we showed that fractionally charged topological excitations exist in tight-biding systems where time-reversal symmetry is respected.

Selected Publications

“Fractional Quantum Hall States at Zero Magnetic Field” T. Neupert, L. Santos, C. Chamon, and C. Mudry, Phys. Rev. Lett. 106, 236804 (2011).

“Electron fractionalization in two-dimensional graphenelike structures” C.-Y. Hou, C. Chamon, and C. Mudry, Phys. Rev. Lett. 98 186809 (2007).

“Quantum glassiness in strongly correlated clean systems: an example of topological overprotection” Claudio Chamon, Phys. Rev. Lett. 94, 040402 (2005).

“Quantum pump for spin and charge transport in a Luttinger liquid” Prashant Sharma and Claudio Chamon, Phys. Rev. Lett. 87, 096401 (2001).

“Solitons in Carbon Nanotubes” Claudio Chamon, Phys. Rev. B 62, 2806 (2000).

For a full list of publications, please see the attached CV.


  • American Physical Society Fellow
  • Alfred P. Sloan Fellow
  • National Science Foundation Faculty Early Career Award (1999-2003)