Cryogenic Optical Nanoscopy of 2D Electron Systems

Monday, June 29 2026 I 17:00 (CEST)

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In this webinar, we present cryogenic optical nano-spectroscopy enabled by the cryo-neaSCOPE+xs.

Together with Thomas Taubner (RWTH Aachen) we willl discuss s-SNOM results of buried 2D electron gas (2DEG)  at the interface between LaAlO3 / SrTiO3 (LAO/STO) at 8K temperature.

Barnett et al. showed that a fingerprint spectral range exists for 2DEGs, which allows to disentangle the charge carrier density and moblity at the nanoscale. This study was made possible by employing a novel OPO laser source, which leads to unprecedented high signal-to-noise nano-IR spectroscopy at low temperatures.

To round off the event, Clément Détourbe (attocube systems) will show how cryogenic s-SNOM experiments can be done in practice, showcasing the similarities and differences to measurements done at room-temperature.

Event Details:

  • When: Monday, June 29, 2026, 17:00 CEST
  • Where: Watch online, live or after the event
  • Duration: ca. 40 minutes + Q&A 

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Hosted by

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Thomas Taubner

RWTH Aachen

Thomas Taubner is Professor for Nano-optics and Metamaterials at the RWTH Aachen, with over two decades of experience in near-field microscopy at infrared wavelengths.

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Lars Mester

attocube systems

Lars Mester is an Application Engineer at attocube, specializing in guiding customers in the industry through the sales process and helping them select optimal products to meet their specific needs.

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Clément Détourbe

attocube systems

Clément Détourbe is a Development & Test Engineer at attocube, specialized in bringing established optical nanoscopy solutions from room-temperature to cryogenic conditions.