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HL: Fachverband Halbleiterphysik
HL 18: Nanomechanical systems (joint session HL/TT)
HL 18.7: Vortrag
Dienstag, 10. März 2026, 11:45–12:00, POT/0051
The best of two worlds: hexagonal boron nitride exfoliated on stressed silicon carbide string resonators — •Philipp Bredol1, Felix David1, Junhui Wu2, Andrey N. Anisimov2, Takashi Taniguchi3, Kenji Watanabe3, Georgy V. Astakhov2, Artur Erbe2, and Eva M. Weig1 — 1TU Munich, Chair of Nano and Quantum Sensors, 85748 Munich, Germany — 2HZDR, Institute of Ion Beam Physics and Materials Research, 01328 Dresden, Germany — 3National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
The boron vacancy (VB) of hexagonal boron nitride (h-BN) is a promising single photon emitter for applications in quantum technologies. Nanomechanical control of the VB would greatly enhance its versatility in such applications, therefore nanomechanical h-BN resonators are of great interest. Here we demonstrate that h-BN can be exfoliated on a chip with a pre-stressed silicon carbide thin-film and subsequently patterned into nanomechanical string resonators with high tensile stress. The resulting h-BN covered string resonators have high mechanical quality factors due to dissipation dilution and show the optically detected magnetic resonance signature of the VB of h-BN. Our fabrication approach allows to decouple the choice of the defect hosting 2D-material from the engineering of the mechanical mode and paves the way to nanomechanical control of single photon emitters in h-BN and other 2D materials.
Keywords: string resonator; magnetic resonance; hybrid system; SiC; h-BN