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- W9299689 abstract "In the paradigm of one electron band theory, the size quantization effects are expected to increase thermopower in carrier confined systems. However, this is not observed in case of the SrTiO3 quantum wells, probably due to the finite extent of the interfacial electron gas in the third dimension. Here, we investigate LaAlO3-SrTiO3 heterostructure interface with delta-doping of a LaMnO3 sub-monolayer. This results in a giant increase in thermopower. The resistivity measurements give evidence for strong Coulomb correlations in the delta-doped heterostructures. We present model calculations based on modified Heikes formula which attribute the thermopower enhancement to the increased spin and orbital entropy originating from the LaMnO3 sub-monolayer. Furthermore, a weak effect of magnetic field on thermopower can also be qualitatively understood in the model." @default.
- W9299689 created "2016-06-24" @default.
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- W9299689 date "2013-06-06" @default.
- W9299689 modified "2023-09-27" @default.
- W9299689 title "Coulomb correlations and enhanced thermopower in delta-doped LaAlO3-SrTiO3 interface" @default.
- W9299689 hasPublicationYear "2013" @default.
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