The Effect of Randomness on the Mott State

Details The Effect of Randomness on the Mott State The Effect of Randomness on the Mott State

2007-01-05

arxiv.org/abs/cond-mat/0701114v1

Phys. Rev. Lett. 99, 186402 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages

Scientific paper

10.1103/PhysRevLett.99.186402

We reinvestigate the competition between the Mott and the Anderson insulator state in a one-dimensional disordered fermionic system by a combination of instanton and renormalization group methods. Tracing back both the compressibility and the ac-conductivity to a vanishing kink energy of the electronic displacement field we do not find any indication for the existence of an intermediate (Mott glass) phase.

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