TY - JOUR
T1 - Anomalous mass enhancement in strongly correlated quantum wells
AU - Okamoto, Satoshi
PY - 2011/11/14
Y1 - 2011/11/14
N2 - Using dynamical-mean-field theory, we investigate the electronic properties of quantum wells consisting of a t2g1-electron system with strong correlations. The special focus is on the subband structure of such quantum wells. The effective mass is found to increase with increase in the value of the bottom of the subband, i.e., decrease in the subband occupation number. This is due to the combination of Coulomb repulsion, whose effect is enhanced on surface layers, and longer-range hoppings. We discuss the implication of these results for the recent angle-resolved photoemission experiment on SrVO3 thin films.
AB - Using dynamical-mean-field theory, we investigate the electronic properties of quantum wells consisting of a t2g1-electron system with strong correlations. The special focus is on the subband structure of such quantum wells. The effective mass is found to increase with increase in the value of the bottom of the subband, i.e., decrease in the subband occupation number. This is due to the combination of Coulomb repulsion, whose effect is enhanced on surface layers, and longer-range hoppings. We discuss the implication of these results for the recent angle-resolved photoemission experiment on SrVO3 thin films.
UR - http://www.scopus.com/inward/record.url?scp=82655166352&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.84.201305
DO - 10.1103/PhysRevB.84.201305
M3 - Article
AN - SCOPUS:82655166352
SN - 1098-0121
VL - 84
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 20
M1 - 201305
ER -