Dielectric-constant-enhanced hall mobility in complex oxides.
The high dielectric constant of doped ferroelectric KTa(1-x)Nb(x)O(3) is shown to increase dielectric screening of electron scatterers, and thus to enhance the electronic mobility, overcoming one of the key limitations in the application of functional oxides. These observations are based on transport and optical measurements as well as band structure calculations.
Oak Ridge National Laboratory, Materials Science and Technology Division, Oak Ridge, Tennessee 37831, USA. siemonsw@ornl.gov
Wolter
W
Siemons
Michael A
MA
McGuire
Valentino R
VR
Cooper
Michael D
MD
Biegalski
Ilia N
IN
Ivanov
Gerald E
GE
Jellison
Lynn A
LA
Boatner
Brian C
BC
Sales
Hans M
HM
Christen
D004581:Electronics; D004583:Electrons; D008280:Magnetics; D010087:Oxides / Q000737:chemistry*; D013696:Temperature
D010087:Oxides