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@ARTICLE{Esat:892836,
author = {Esat, Taner and Borgens, Peter and Yang, Xiaosheng and
Coenen, Peter and Cherepanov, Vasily and Raccanelli, Andrea
and Tautz, F. Stefan and Temirov, Ruslan},
title = {{A} millikelvin scanning tunneling microscope in ultra-high
vacuum with adiabatic demagnetization refrigeration},
journal = {Review of scientific instruments},
volume = {92},
number = {6},
issn = {0034-6748},
address = {[S.l.]},
publisher = {American Institute of Physics},
reportid = {FZJ-2021-02375},
pages = {063701 -},
year = {2021},
abstract = {We present the design and performance of an ultra-high
vacuum scanning tunneling microscope (STM) that uses
adiabatic demagnetization of electron magnetic moments for
controlling its operating temperature ranging between 30 mK
and 1 K with an accuracy of up to 7 μK rms. At the same
time, high magnetic fields of up to 8 T can be applied
perpendicular to the sample surface. The time available for
STM experiments at 50 mK is longer than 20 h, at 100 mK
about 40 h. The single-shot adiabatic demagnetization
refrigerator can be regenerated automatically within 7 h
while keeping the STM temperature below 5 K. The whole setup
is located in a vibrationally isolated, electromagnetically
shielded laboratory with no mechanical pumping lines
penetrating its isolation walls. The 1 K pot of the
adiabatic demagnetization refrigeration cryostat can be
operated silently for more than 20 days in a single-shot
mode using a custom-built high-capacity cryopump. A high
degree of vibrational decoupling together with the use of a
specially designed minimalistic STM head provides
outstanding mechanical stability, demonstrated by the
tunneling current noise, STM imaging, and scanning tunneling
spectroscopy measurements, all performed on an atomically
clean Al(100) surface.},
cin = {PGI-3},
ddc = {620},
cid = {I:(DE-Juel1)PGI-3-20110106},
pnm = {5213 - Quantum Nanoscience (POF4-521)},
pid = {G:(DE-HGF)POF4-5213},
typ = {PUB:(DE-HGF)16},
pubmed = {34243501},
UT = {WOS:000692136100001},
doi = {10.1063/5.0050532},
url = {https://juser.fz-juelich.de/record/892836},
}