SKM 2023 – scientific programme

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O: Fachverband Oberflächenphysik

O 21: Poster: Scanning Probe Techniques

O 21.2: Poster

Monday, March 27, 2023, 18:00–20:00, P2/EG

A second generation millikelvin scanning tunneling microscope with adiabatic demagnetization refrigeration — Taner Esat^1,2, •Denis Krylov¹, Peter Borgens^1,3,7, Xiaosheng Yang^1,3, Peter Coenen^1,4, Vasily Cherepanov^1,4, Andrea Raccanelli^5,7, F. Stefan Tautz^1,2,3, and Ruslan Temirov^1,6 — ¹Peter Grünberg Institute (PGI-3), Forschungszentrum Jülich, 52425 Jülich, Germany — ²Jülich Aachen Research Alliance, Fundamentals of Future Information Technology, 52425 Jülich, Germany — ³Experimentalphysik IV A, RWTH Aachen University, 52074 Aachen, Germany — ⁴mProbes GmbH, 52428 Jülich, Germany — ⁵Cryovac GmbH & Co KG, 53842 Troisdorf, Germany — ⁶Faculty of Mathematics and Natural Sciences, Institute of Physics II, University of Cologne, 50937 — ⁷Current address: Peter Grünberg Institute (Cryo-Lab), Forschungszentrum Jülich, 52425 Jülich, Germany

We present the design of a second generation ultra-high vacuum scanning tunneling microscope (STM) that uses adiabatic demagnetization of electron magnetic moments for controlling its operating temperature down to 30 mK. A high degree of vibrational decoupling promises an outstanding mechanical stability, demonstrated by the first generation of this instrument. Additionally, high frequency cables were implemented in the design in order to enable electron spin resonance experiments.

References: [1] T. Esat, P. Borgens, X. Yang, P. Coenen, V. Cherepanov, A. Raccanelli, F. S. Tautz, and R. Temirov, Review of Scientific Instruments 92, 063701 (2021).