Closed-cycle Cryogen-free LT-SPM System

闭循环无液氦扫描探针显微镜系统

Product Description

MAIN FEATURES

● Closed-cycle cryogen-free cooling system with sample temperature below 4 K, offering low operating cost.
● Innovative remote liquefaction scheme with a specially designed vibration isolation module, integrated with a high-rigidity SPM scanner, ensure the system to achieve excellent vibration damping, which is comparable to traditional liquid helium Dewar-based systems.
● Easy integration for upgrading conventional wet cryogenic STM systems (liquid helium Dewar) to a closed-cycle, cryogen-free configuration.
● Liquid nitrogen or liquid helium can be used directly for cooling, enabling rapid cooldown and a wide operational temperature range.
● Compatible with qPlus AFM module.
● Compatible with five-electrode sample holder for variable temperature electrical transport measurements.
● Optional optical access for photonic or optoelectronic experiments.
● Optional in-situ deposition capability in the SPM chamber.

TEST DATA

Review of Scientific Instruments 94, 093701 (2023), https://doi.org/10.1063/5.0165089

TEST DATA

TECHNICAL DATA

Scanner	Modular design with qPlus AFM Function
	Temperature Range	4~300 K
	RT to LT time	About 7 h
	Coarse Range(X/Y/Z)	≥2×2×5 mm
	ScanRange(X/Y/Z)	≥4×4×1 μm@±220 V RT
	ScanRange(X/Y/Z)	≥1.5×1.5×0.4 μm@±220 V LT
	Resolution	Atomic resolution
	Temperature Drift	Z ：≤20 pm/h@4K
	Temperature Drift	XY ：≤100 pm/h@4K
	Temperature Stability	±5 mk@ Constant Temperature Laboratory Environment
	Vibration	＜2 pm
	Tunneling Current	＜2 pA（with external preamplifier）
Manipulator	X/Y Axis	±12.5mm manually actuated
	Z Axis	450mm stepper motorized
	Primary (polar) rotation	±180° manually actuated
	Secondary (azimuthal) rotation	±180° manually actuated
	Temperature range	-150℃~RT（LN₂ cooling）；RT ~1000℃（E-Beam heating）
Evaporators	DN40CF ×5、DN63CF ×1（Others upon request）
Options	Optical channel for optical experiments
	RHEED
	LEED

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En-Closed-cycle Cryogen-free LT-SPM System

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