Dramatic Mobility Enhancements in Doped SrTiO3 Thin Films by Defect Management

Abstract

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 low as 2.0 x 10^18cm-3 (~ 0.02 at. %), far exceeding previous pulsed laser deposition films. This result stems from precise strontium and oxygen vacancy defect chemistry management, providing a general approach for defect control in complex oxide heteroepitaxy.

13 pages, 4 figures

References in corpus (7)

• Magnetic effects at the interface between nonmagnetic oxides
• Electric Field Control of the LaAlO${}_3$/SrTiO${}_3$ Interface Ground State
• Dominant mobility modulation by the electric field effect at the LaAlO_3 / SrTiO_3 interface
• Polar Discontinuity Doping of the LaVO_3/SrTiO_3 Interface
• Growth mode control of the free carrier density in SrTiO3-d films
• Temperature Dependent Polarity Reversal in Au/Nb:SrTiO3 Schottky Junctions
• Tuning of metal-insulator transition of two-dimensional electrons at parylene/SrTiO${}_3$ interface by electric field

Cited by in corpus (13)

• Photoferroelectric oxides
• Intrinsic spin-orbit coupling in superconducting δ-doped SrTiO3 heterostructures
• Enhancing the electron mobility via delta-doping in SrTiO3
• Fermi surface and superconductivity in low-density high-mobility δ-doped SrTiO3
• Enhanced Superconducting Transition Temperature due to Tetragonal Domains in Two-Dimensionally Doped SrTiO${}_3$
• Electron degeneracy and intrinsic magnetic properties of epitaxial Nb:SrTiO${}_3$ thin-films controlled by defects
• Electrochemical Strain Microscopy with Blocking Electrodes: The Role of Electromigration and Diffusion
• Perspective: Heusler interfaces -- opportunities beyond spintronics?
• Electrical Degradation in Dielectric and Piezoelectric Oxides: Review of Defect Chemistry and Associated Characterization Techniques
• Superconducting tunneling spectroscopy of spin-orbit coupling and orbital depairing in Nb:SrTiO${}_3$
• Large-scale modulation in the superconducting properties of thin films due to domains in the $SrTi{O}_3$ substrate
• Electron gas induced in SrTiO${}_3$
• Sequential pulsed laser deposition of homoepitaxial SrTiO${}_3$ thin films