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Nano Letters
Tuning and persistent switching of graphene plasmons on a ferroelectric substrate Michael D. Goldflam†*, Guang-Xin Ni†,‡,$, Kirk W. Post†, Zhe Fei†, Yuting Yeo$, Jun You Tan$, Aleksandr S. Rodin†‡, Brian C. Chapler†, Barbaros Özyilmaz‡,$, Antonio H. Castro Neto‡, Michael M. Fogler†, D. N. Basov† †
Physics Department, University of California, San Diego, La Jolla, CA 92093, USA
‡
Centre for Advanced 2D Materials and Graphene Research Centre, National University of
Singapore, Singapore 117546 $
Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542
ACS Paragon Plus Environment
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ABSTRACT
We characterized plasmon propagation in graphene on thin films of the high-κ dielectric PbZr0.3Ti0.7O3 (PZT). Significant modulation (up to ±75%) of the plasmon wavelength was achieved with application of ultra-small voltages (
