Search

link to homepage

Peter Grünberg Institute
(leer)

Navigation and service


Magnetotransport

By means of magnetotransport measurements spin and quantum phenomena in semiconductor nanostructures can be investigated. Depending on the required measurement temperature different types of cryostats are used. In order to obtain high magnetic fields, often superconducting magnets are employed.

For extremely low temperatures an Oxford Kelvinox 200 He-3/He-4 dilution refrigerator and a Leiden Cryogenics dilution refrigerator are available. Both with a base temperature of about 10 mK. In a dilution fridge a mixture of He-3 and He-4 is used for cooling. At low temperatures a phase separation into a He-3 rich and He-3 diluted phase occurs. The cooling power results from the transfer of He-3 from the He-3 rich into the He-3 diluted phase. This cryostats is equipped with a superconduction magnets, in case of the Oxford system with a vector magnet.

Leiden dilution fridgeLeiden Cryogenics dilution refrigerator, control panel


For measurements down to 300 mK an Oxford He-3 cryostat is available, which is equipped with a 8 T magnet. For cooling down to base temperature previously condensed He-3 is pumped by a sorption pump.

He-3 CryostatOxford He-3 cryostat


In addition to the systems mentioned above it is also possible to measure samples in a He-4 continuous flow cryostat at temperatures from 4 K up to room temperature. Here, a magnetic field of 0.5 T can be applied.


Servicemeu

Homepage

Logo

 

 

 

YOUR OPINION MATTERS!

 

Dear visitor,

To make our website suit your needs even more and to give it a more appealing design, we would like you to answer a few short questions.

Answering these questions will take approx. 10 min.

Start now Close window

Thank you for your support!

 

In case you have already taken part in our survey or in case you have no time to take part now, you can simply close the window by clicking "close".

If you have any questions on the survey, please do not hesitate to contact: webumfrage@fz-juelich.de.

 

Your Team at Forschungszentrum Jülich

 

Note: Forschungszentrum Jülich works with the market research institute SKOPOS to anonymously conduct and analyze the survey. SKOPOS complies with the statutory requirements on data protection as well as with the regulations of ADM (Arbeitskreis Deutscher Markt- und Sozialforschungsinstitute e.V.) and ESOMAR (Europäische Gesellschaft für Meinungs- und Marketingforschung). Your data will not be forwarded to third parties.