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Enhancing the electron mobility via delta-doping in SrTiO3
Y. Kozuka, M. Kim, H. Ohta +3
We fabricated high-mobility δ-doped structures in SrTiO3 thin films in order to investigate the low temperature electronic transport properties of confined carriers in this system.…
Dramatic Mobility Enhancements in Doped SrTiO3 Thin Films by Defect Management
Y. Kozuka, Y. Hikita, C. Bell +1
We report bulk-quality n-type SrTiO3 (n-SrTiO3) thin films fabricated by pulsed laser deposition, with electron mobility as high as 6600 cm2 V-1 s-1 at 2 K and carrier density as l…
Built-in and induced polarization across LaAlO/SrTiO heterojunctions
Guneeta Singh-Bhalla, Christopher Bell, Jayakanth Ravichandran +6
Ionic crystals terminated at oppositely charged polar surfaces are inherently unstable and expected to undergo surface reconstructions to maintain electrostatic stability. Essentia…
Charge writing at the LaAlO3/SrTiO3 surface
Yanwu Xie, Christopher Bell, Takeaki Yajima +2
Biased conducting-tip atomic force microscopy (AFM) has been shown to write and erase nanoscale metallic lines at the LaAlO3/SrTiO3 interface. Using various AFM modes, we show the…