TY  - JOUR
AU  - Liebsch, A.
TI  - Doping-driven Mott transition in La_{1-x}Sr_xTiO_3 via simultaneous electron and hole doping of t2g subbands as predicted by LDA+DMFT calculations
JO  - Physical review / B
VL  - 77
IS  - 11
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-2328
SP  - 115115
PY  - 2008
N1  - Record converted from VDB: 12.11.2012
AB  - The insulator to metal transition in LaTiO3 induced by La substitution via Sr is studied within multiband exact diagonalization dynamical mean field theory at finite temperatures. It is shown that weak hole doping triggers a large interorbital charge transfer, with simultaneous electron and hole doping of t(2g) subbands. The transition is first order and exhibits phase separation between insulator and metal. In the metallic phase, subband compressibilities become very large and have opposite signs. Electron doping gives rise to an interorbital charge flow in the same direction as hole doping. These results can be understood in terms of a strong orbital depolarization.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000254542800054
DO  - DOI:10.1103/PhysRevB.77.115115
UR  - https://juser.fz-juelich.de/record/2328
ER  -