Session J35: Focus Session: Spins in Semiconductors -- Spin Orbit Effects and Spin Relaxation
11:15 AM–2:15 PM, Tuesday, March 16, 2010
Room: E145
Sponsoring Units:
GMAG DMP FIAP
Chair: Scott Crooker, Los Alamos National Laboratory
Abstract ID: BAPS.2010.MAR.J35.13
Abstract: J35.00013 : Weak Antilocalization and Spin-Orbit Coupling in LaAlO$_{3}$/SrTiO$_{3}$ Nanostructures
2:03 PM–2:15 PM
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Abstract
Authors:
Cheng Cen
Daniela F. Bogorin
Jeremy Levy
Recently, nanoscale control of the metal-insulator transition at the interface between LaAlO$_{3}$ and SrTiO$_{3}$ is demonstrated to be capable of making nanostructures exhibiting various functional electrical properties.\footnote{C. Cen, S. Thiel, K. E. Andersen, C. S. Hellberg, J. Mannhart, and J. Levy, Nature Materials \textbf{7}, 2136 (2008).}$^,$\footnote{C. Cen, S. Thiel, J. Mannhart, and J. Levy, Science \textbf{323}, 1026 (2009)} We performed low temperature magneto-transport measurement on straight and L-shaped nanowire channels. Strong geometry dependence of weak antilocalization (WAL) due to spin-orbit (SO) coupling is observed. A sharp feature around $B $= 0 T of non-local voltage is measured 12 $\mu $m away from current carrying channel. Temperature and external magnetic field orientation dependences of WAL signatures are studied. The potential to explore spin degree of freedom with interfacial nanostructures opens new possibilities for novel oxide spintronic devices.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.J35.13