| AVS 64th International Symposium & Exhibition | |
| Nanometer-scale Science and Technology Division | Thursday Sessions |
| Session NS+AS+EM+MI+SP+SS-ThM |
| Session: | Nanoscale Imaging and Characterization |
| Presenter: | Jeremy Levy, University of Pittsburgh |
| Authors: | L. Chen, University of Pittsburgh E. Sutton, University of Pittsburgh J. Li, University of Pittsburgh M. Huang, University of Pittsburgh J.F. Hsu, University of Pittsburgh B. D'Urso, University of Pittsburgh J.W. Lee, University of Wisconsin-Madison H. Lee, University of Wisconsin-Madison C.B. Eom, University of Wisconsin-Madison P. Irvin, University of Pittsburgh J. Levy, University of Pittsburgh |
| Correspondent: | Click to Email |
The unique electronic and optical properties of graphene make it a promising device in terahertz(THz) regime. Another 2D electron system, the complex-oxide heterostructure LaAlO3/SrTiO3, has been shown to exhibit great promise for control and detection of broadband THz emission at extreme nanoscale dimensions1. Recently, we have successfully integrated these two platforms: we have created graphene/LaAlO3/SrTiO3 structures with (1) high mobility in the graphene channel2 and (2) oxide nanostructures patterned directly underneath the graphene layer3. Here we describe new experiments that probe graphene with this nanoscale THz spectrometer using ultrafast optical techniques. This unprecedented control of THz radiation at 10 nm length scales creates a pathway toward hybrid THz functionality in graphene/LaAlO3/SrTiO3 heterostructures.
We gratefully acknowledge financial support from the following agencies and grants: AFOSR FA9550-12-1-0268 (JL, PRI), AFOSR FA9550-12-1-0342 (CBE)), ONR N00014-13-1-0806 (JL, CBE), NSF DMR-1234096 (CBE), ONR N00014-15-1-2847 (JL) and N00014-16-3152 (JL).