TY - JOUR
T1 - Magnetic flux effect on a Kondo-induced electric polarization in a triangular triple quantum dot
AU - Koga, Mikito
AU - Matsumoto, Masashige
AU - Kusunose, Hiroaki
PY - 2014/8/15
Y1 - 2014/8/15
N2 - A magnetic flux effect is studied theoretically on an electric polarization induced by the Kondo effect in a triangular triple-quantum-dot system, where one of the three dots is connected to a metallic lead. This electric polarization exhibits an Aharonov-Bohm oscillation as a function of the magnetic flux penetrating through the triangular loop. The numerical renormalization group analysis reveals how the oscillation pattern depends on the Kondo coupling of a local spin with lead electrons, which is sensitive to the point contact with the lead. It provides an experimental implication that the Kondo effect is the origin of the emergent electric polarization.
AB - A magnetic flux effect is studied theoretically on an electric polarization induced by the Kondo effect in a triangular triple-quantum-dot system, where one of the three dots is connected to a metallic lead. This electric polarization exhibits an Aharonov-Bohm oscillation as a function of the magnetic flux penetrating through the triangular loop. The numerical renormalization group analysis reveals how the oscillation pattern depends on the Kondo coupling of a local spin with lead electrons, which is sensitive to the point contact with the lead. It provides an experimental implication that the Kondo effect is the origin of the emergent electric polarization.
UR - http://www.scopus.com/inward/record.url?scp=84925003593&partnerID=8YFLogxK
U2 - 10.7566/JPSJ.83.084707
DO - 10.7566/JPSJ.83.084707
M3 - Article
AN - SCOPUS:84925003593
VL - 83
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 8
M1 - 084707
ER -