The milli-Kelvin Challenge
enabling fundamental research near absolute zero
Recent advances in various branches of solid state physics have led to a growing
interest in performing quantum optics, quantum opto-mechanics, scanning
probe microscopy (SPM) and angle-dependent magneto-transport measure-
ments in the sub-100 mK regime, where many emergent phenomena reside.
The quest for elucidation of the latter has spurred the interest in dilution
refrigerators (DRs). Recent surge in funding for quantum computing has only
boosted this interest further.
Milli-Kelvin measurements have been established for ~60 years, especially
for electrical transport. However, even without any moving parts, such experi-
ments are extremely delicate due to limited cooling power, long cooling cycles,
and used to require comprehensive know-how in handling the accompanying
complex setups.
Yet, over the last decade, closed-cycle (so-called dry) DRs have become the
de facto standard for ultra-low-temperature applications, effectively replacing
their liquid counterparts.
This has facilitated their spread due to the much improved ease-of-use
through automation and independence on liquid helium. However, sensi-
tive experiments involving nanopositioning of tips and samples have become
even more challenging due to the vibrations induced by the cold heads of
the pulse tube coolers which provide precooling in two stages down to 40 K
and 4 K.
Therefore, while the cooling to ultra-low temperatures itself has become
readily available, delicate experiments such as SPM are still extremely
challenging. attocube has gained substantial experience with LT-SPM over
the last 20 years, and is able to offer expert service on all levels: 30% of our
employees hold a PhD in a scientific field related to our customers’ research.
As a result, everyone in our sales team, project leaders in production, and our
after-sales support team are dedicated to understand your applications, and
to help you achieve your scientific goals utilizing our technology.
attocube is your reliable partner in enabling fundamental research near
absolute zero.