Strong Correlation Quantum Transport Research Team

We aim to study quantum transport in transition metal oxide heterostructures. Thus far, the concepts and techniques of mesoscopic physics have seldom been applied to most research in these materials, because of their typically low electron mean free paths. However, there has been significant progress in the growth of atomic scale oxide heterostructures, and a number of systems have been discovered which have metallic, magnetic and superconducting interfaces, some of which have sufficiently high mobility that interference experiments with normal state electrons are newly accessible. We propose to use these systems, in gated and lithographically-defined small structures, to probe mesoscopic effects in d-electron systems.

Research Subjects

• Metallic and superconducting oxide interfaces
• Oxide nanolithography
• Mesoscopic effects in oxide heterostructures

Publications

1. * Bell, C., Harashima, S., Kozuka, Y., Kim, M., Kim, B. G., Hikita, Y., and Hwang, H. Y.:
   "Dominant Mobility Modulation by the Electric Field Effect at the LaAlO3/SrTiO3 Interface."
   Phys. Rev. Lett. 103, 226802:1-4 (2009)
2. * Kozuka, Y., Kim, M., Bell, C., Kim, B. G., Hikita, Y., and Hwang, H. Y.:
   Two-Dimensional Normal-State Quantum Oscillations in a Superconducting Heterostructure."
   Nature 462, 487-490 (2009)