TY - JOUR
T1 - Capacitance of a resonant level coupled to Luttinger liquids
AU - Goldstein, Moshe
AU - Berkovits, Richard
PY - 2010/10/18
Y1 - 2010/10/18
N2 - In this Rapid Communication, we study the differential capacitance of a single-level quantum dot attached to quantum wires in the Luttinger-liquid phase or to fractional quantum-Hall edges, by both tunneling and interactions. We show that logarithmic or even power-law divergence of the capacitance at low temperatures may result in a substantial region of the parameter space (including the ν=1/3 filling). This behavior is a manifestation of generalized two-channel Kondo physics and can be used to extract Luttinger-liquid parameters from thermodynamic measurements.
AB - In this Rapid Communication, we study the differential capacitance of a single-level quantum dot attached to quantum wires in the Luttinger-liquid phase or to fractional quantum-Hall edges, by both tunneling and interactions. We show that logarithmic or even power-law divergence of the capacitance at low temperatures may result in a substantial region of the parameter space (including the ν=1/3 filling). This behavior is a manifestation of generalized two-channel Kondo physics and can be used to extract Luttinger-liquid parameters from thermodynamic measurements.
UR - http://www.scopus.com/inward/record.url?scp=78149277749&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.82.161307
DO - 10.1103/PhysRevB.82.161307
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AN - SCOPUS:78149277749
SN - 1098-0121
VL - 82
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 16
M1 - 161307
ER -