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Measuring Luttinger Liquid Correlations from Charge Fluctuations in a Nanoscale Structure

Paata Kakashvili (Institutionen för teoretisk fysik och mekanik, Fasta tillståndets teori) ; Henrik Johannesson (Institutionen för teoretisk fysik och mekanik, Fasta tillståndets teori)
Physical Review Letters Vol. 91 (2003), p. 186403 .
[Artikel, refereegranskad vetenskaplig]

We suggest an experiment to study Luttinger liquid behavior in a one-dimensional nanostructure, avoiding the usual complications associated with transport measurements. The proposed setup consists of a quantum box, biased by a gate voltage, and side coupled to a quantum wire by a point contact. Close to the degeneracy points of the Coulomb blockaded box, and in the presence of a magnetic field sufficiently strong to spin polarize the electrons, the setup can be described as a Luttinger liquid interacting with an effective Kondo impurity. Using exact nonperturbative techniques, we predict that the differential capacitance of the box will exhibit distinctive Luttinger liquid scaling with temperature and gate voltage.



Denna post skapades 2006-08-29.
CPL Pubid: 20013

 

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Institutioner (Chalmers)

Institutionen för teoretisk fysik och mekanik, Fasta tillståndets teori (1900-2005)

Ämnesområden

Elektronstruktur
Mesoskopisk fysik

Chalmers infrastruktur

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Correlation Effects in Nanostructures