STREAM Flow Cryostat UHV SPM

STM, qPlus®-AFM & Spectroscopy

3D Coarse Motion

Temperature: <10K to 420K

Flow Cryostat for LN2 & LHe

Tip & Sample Cold

The STREAM SPM

The SIGMA STREAM UHV SPM combines advantages of a cost-effective low-temperature flow cryostat platform with the attractive features of the TRIBUS SPM head including 3D coarse motion, high intrinsic stability, easy tip and sample exchange, and optical access.

The STREAM SPM platform is purpose-built for high resolution STM, qPlus®-AFM, and spectroscopy experiments in a temperature range between <10K and 420K. With the integrated thermal shield compartment, the cryostat enables operation using either LHe (<10K) or LN₂ (<100K), under stable conditions. The efficient thermal shielding delivers low liquid helium consumption and high temperature stability resulting in low drift.

TRIBUS SPMwith spring suspension and eddy current damping for optimum vibration isolation.

STREAM UHV SPM Features

SPM head clampingfor rapid cool down from room temperature

and for tip/sample exchange.

Flow cryostat for LN2 or LHe.

Thermal shieldingensures minimum temperature.

Optical accessfor easy viewing and in-situ evaporation.

STREAM is integrated in an extremely compact vacuum system. This modular assembly is available as a stand -alone unit or as a bolt-on option for integration into larger SPM multi-chamber UHV systems.

...A Rigid, Modular and Compact Research System

Bolt-on OptionSTREAM is housed in a tailored UHV chamber. The bolt-on chamber option includes: the chamber, a sample carousel with 20 positions for tips and samples, and benefits a wobble stick for easy tip and sample transfer.

STREAM System: Rigid, Modular and Compact

Tip Carriers and Sample Plates• Standard flag style sample plates.• Cost effective STM tip carriers.• Tip/sample handling and exchange via wobble stick.• Carousel with 20 storage position for tips/samples.

Integrated TRIBUS HeadThe STREAM SPM employs the TRIBUS SPM head with 3D coarse motion for tip/sample, high intrinsic stability, easy tip and sample exchange, and optical access.

For more information on the TRIBUS head please see the relevant technical information available.

• Thermal shield with windows for evaporation. • Direct evaporation into SPM.• 3 access ports.• Angle between evaporator and sample surface: 30°.• Evaporation from either rods or crucibles.

Optical Access for CCD Camera and Evaporators

All results are obtained with the STREAM SPM in combination with the SIGMA SXM Controller (below). For more information on the SXM Controller please see the relevant technical information available.

Au (111) @ 10K (STM)

Options

Measurement Results

10cm

63cm

87cm

128c

m

Dimensions of the complete STREAM System Solution

qPlus is a US registered trademark SN77788740 of Franz J. Giessibl, Regensburg, Germany

www.sigma-surface-science.com

qPlus® AFM operation4 or 10 additional sample contactsSTM tip preparation toolCustomised preparation chamber

SPM Characteristics

Typical Applications

SPM head

Cryostat

Temperature range

Min. temperature

Cryogen consumption

Cool down time

Flow Cryostat

TRIBUS SPM

<10K to 300Ktyp. <9K (LHe cooling)typ. <81K (LN2 cooling)5I LN2 per 24h at T<85K0.7I LHe per hour at T<10K

< 30 min. from 85K to <10K

Access ports for CDD camera, light, evaporators, in-situ tip/sample exchange

SPM modes STM, qPlus®-AFM and related spectroscopy

STM: atomic resolution on Au(111) at T<10KSPM specifications

qPlus®: atomic resolution on NaCI or Si(111) 7x7 at T<10K

SPM SpecificationsTechnical Information

Typical ApplicationsSTM, STS, qPlus-NC-AFM, I(V), dI/dU, dI/dz, IETS, atom/molecule/nanoparticle manipulation, df(z), df(U), SP-STM, …

For further information please contact:sales@mantis-sigma.com