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All-optical band structure reconstruction and onset of Landau quantization of Dirac fermions
Josef Riepl, Marc Aichner, Nikolai N. Mikhailov +6
The nature of relativistic electrons in solids depends on the precise shape of the underlying band structure. Prominently, symmetry-related mechanisms, such as the breaking of time…
Terahertz light-matter interaction beyond unity coupling strength
Andreas Bayer, Marcel Pozimski, Simon Schambeck +4
Achieving control over light-matter interaction in custom-tailored nanostructures is at the core of modern quantum electrodynamics [1-15]. In ultrastrongly coupled systems [5-15],…
Polarized SERS of individual suspended carbon nanotubes by Pt-Re nanoantennas
Christian Bäuml, Tobias Korn, Christoph Lange +3
We present optical nanoantennas designed for applications that require processing temperatures larger than 800°C. The antennas consist of arrays of Re/Pt bilayer strips fabricated…
Coherent cyclotron motion beyond Kohn's theorem
T. Maag, A. Bayer, S. Baierl +10
In solids, the high density of charged particles makes many-body interactions a pervasive principle governing optics and electronics[1-12]. However, Walter Kohn found in 1961 that…
Sub-cycle control of terahertz high-harmonic generation by dynamical Bloch oscillations
O. Schubert, M. Hohenleutner, F. Langer +8
Ultrafast charge transport in strongly biased semiconductors is at the heart of highspeed electronics, electro-optics, and fundamental solid-state physics. Intense light pulses in…
Tailored nano-antennas for directional Raman studies of individual carbon nanotubes
Nicola Paradiso, Fatemeh Yaghobian, Christoph Lange +4
We exploit the near field enhancement of nano-antennas to investigate the Raman spectra of otherwise not optically detectable carbon nanotubes (CNTs). We demonstrate that a top-dow…