Disorder effect on the Friedel oscillations in a one-dimensional Mott insulator

Details Disorder effect on the Friedel oscillations in a one-dimensional Mott insulator Disorder effect on the Friedel oscillations in a one-dimensional Mott insulator

2007-04-11

arxiv.org/abs/0704.1386v1

Phys. Rev. B 76, 24204 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 5 figures

Scientific paper

10.1103/PhysRevB.76.024204

The Friedel oscillations resulting from coupling a quantum dot to one edge of a disordered one-dimensional wire in the Mott insulator regime, are calculated numerically using the DMRG method. By investigating the influence of the disorder on the Friedel oscillations decay we find that the effect of disorder is reduced by increasing the interaction strength. This behavior is opposite to the recently reported influence of disorder in the Anderson insulator regime, where disorder led to a stronger decay of the Friedel oscillations.

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