TY - JOUR
AU - J Ravichandran
AU - W Siemons
AU - M.L Scullin
AU - S Mukerjee
AU - M Huijben
AU - J.E Moore
AU - A Majumdar
AU - Ramamoorthy Ramesh
AB - We elucidate the relationship between effective mass and carrier concentration in an oxide semiconductor controlled by a double-doping mechanism. In this model oxide system, Sr1-xLaxTiO 3-δ, we can tune the effective mass ranging from 6 to 20m e as a function of filling (carrier concentration) and the scattering mechanism, which are dependent on the chosen lanthanum- and oxygen-vacancy concentrations. The effective mass values were calculated from the Boltzmann transport equation using the measured transport properties of thin films of Sr1-xLaxTiO3-δ. We show that the effective mass decreases with carrier concentration in this large-band-gap, low-mobility oxide, and this behavior is contrary to the traditional high-mobility, small-effective-mass semiconductors. © 2011 The American Physical Society.
BT - Physical Review B - Condensed Matter and Materials Physics
DO - 10.1103/PhysRevB.83.035101
LA - eng
M1 - 3
N1 - cited By 22
N2 - We elucidate the relationship between effective mass and carrier concentration in an oxide semiconductor controlled by a double-doping mechanism. In this model oxide system, Sr1-xLaxTiO 3-δ, we can tune the effective mass ranging from 6 to 20m e as a function of filling (carrier concentration) and the scattering mechanism, which are dependent on the chosen lanthanum- and oxygen-vacancy concentrations. The effective mass values were calculated from the Boltzmann transport equation using the measured transport properties of thin films of Sr1-xLaxTiO3-δ. We show that the effective mass decreases with carrier concentration in this large-band-gap, low-mobility oxide, and this behavior is contrary to the traditional high-mobility, small-effective-mass semiconductors. © 2011 The American Physical Society.
PY - 2011
T2 - Physical Review B - Condensed Matter and Materials Physics
TI - Tuning the electronic effective mass in double-doped SrTiO3
VL - 83
SN - 10980121
ER -