Pseudogaps from thermally disordered spin density waves: optical and Hall conductivity

ORAL

Abstract

We use the spin-fermion model and an approximation originally introduced in the charge denstiy wave context by Lee, Rice, and Anderson to study the conductivity and the Hall conductivity of two-dimensional systems close to antiferromagnetically ordered states. The electron spectral function reveals a pseudogap. Calculation of the longitudinal and Hall conductivities requires a vertex correction which has a nontrivial structure which we discuss. Results are compared to data and to other calculations.

*Work supported by NSF-DMR-0705847 and the U.S. DOE, Office of Science, under Contract No. DE-AC02-06CH11357.

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Authors

  • Jie Lin

    • Materials Science Division, Argonne National Laboratory

  • Andy Millis

    • Columbia University
    • Department of Physics, Columbia University, 538 West 120th Street, New York, New York 10027, USA
    • Physics, Columbia University
    • Department of Physics, Columbia University
    • Columbia