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The Effect of Randomness on the Mott State

Thomas Nattermann·Aleksandra Petkovic·Zoran Ristivojevic·Friedmar Schuetze
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Abstract

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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Thomas Nattermann, Aleksandra Petkovic, Zoran Ristivojevic, Friedmar Schuetze. 2007-01-05. The Effect of Randomness on the Mott State. https://doi.org/10.1103/physrevlett.99.186402

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