Dresden 2017 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 32: Focussed Session: Frontiers in Exploring and Applying Plasmonic Systems I
(Joint Session of CPP, DS, HL, MM, and O, organized by DS)

HL 32.3: Topical Talk

Dienstag, 21. März 2017, 10:30–11:00, CHE 89

Nanoimaging and control of polaritons in 2D materials — •Rainer Hillenbrand — CIC nanoGUNE, San Sebastian, Spain

A promising solution for active control of light on the nanometer scale are plasmons in graphene, which offer ultra-short wavelengths, long lifetimes, strong field confinement, and tuning possibilities by electrical gating. Here, we discuss scattering-type scanning near-field optical microscopy (s-SNOM) for real-space imaging of graphene plasmons [1-3] in nanoresonators [4] and hBN-graphene heterostructures [5]. We also introduce THz near-field photocurrent nanoscopy and discuss its application for imaging acoustic graphene plasmons in a graphene-based THz detector [6]. Further, we discuss ultraslow hyperbolic volume and surface phonon polaritons in boron nitride flakes [7,8].

[1] J. Chen et al., Nature, 487, 77 (2012) [2] Z. Fei et al., Nature 487, 82 (2012) [3] P. Alonso-González et al., Science 344, 1369 (2014) [4] A. Y. Nikitin et al., Nat. Photon. 10, 239 (2016) [4] A. Woessner et al., Nat. Mater. 14, 421 (2015) [6] P. Alonso-González et al., Nat. Nanotechnol. DOI: 10.1038/nnano.2016.185 [7] E. Yoxall et al., Nat. Photon. 9, 674 (2015) [8] P. Li et al, Nano Lett. DOI: 10.1021/acs.nanolett.6b03920