I Understanding Magnetometer & SQUID Property Measurement Systems

[Myriam]

Hello,

Please I don't get how a Magnetometer property measurement system (MPMS) and a Superconductor quantum interference device (SQUİD) are working, can someone explain it ?

Thank you very much

 

[ZapperZ]

Hello,

Please I don't get how a Magnetometer property measurement system (MPMS) and a Superconductor quantum interference device (SQUİD) are working, can someone explain it ?

Thank you very much

This is a very vague (lazy?) question. What exactly do you know already? For example, do you know anything about superconductivity, and in particular, Josephson junction? At what level are you able to understand the explanation given?

It is of no use to you, and a waste of our time, if we give you an elaborate explanation that you cannot comprehend.

Zz.

 

[Myriam]

This is a very vague (lazy?) question. What exactly do you know already? For example, do you know anything about superconductivity, and in particular, Josephson junction? At what level are you able to understand the explanation given?

It is of no use to you, and a waste of our time, if we give you an elaborate explanation that you cannot comprehend.

Zz.

Thank you very much for you answer, I had lectures about superconductivity but I do not know the Josephson junctions yet. Is it still possible to understand the SQUID ? Do you have a good reference book ?

 

[ZapperZ]

Thank you very much for you answer, I had lectures about superconductivity but I do not know the Josephson junctions yet. Is it still possible to understand the SQUID ? Do you have a good reference book ?

Unfortunately, this is still very vague. I do not know what "lectures about superconductivity" means. Did you cover the topic all the way to BCS theory? Or did you look at cartoon pictures of Cooper pairs and then called it a day?

This forum is full of experts in many areas. So you have to be clear and specific in your question and description. Notice that when I asked you about your background, I made specific references to superconductivity and Josephson junction as examples. You need to start doing the same level of details.

Without knowing anything about what you know, I can only give a source that have a "layman's" source on SQUID and magnetometer:

http://hyperphysics.phy-astr.gsu.edu/hbase/Solids/Squid.html

Besides, what have you done yourself in doing a search online that will fit your need?

Zz.

 

[f95toli]

It is also not clear what it is you are trying to understand.
You don't need to know anything about the microscopic theory of superconductors to use an MPMS system with a SQUID magnetometer; from a "user" point-of-view the SQUID just measures the magnetic field (i.e it is really not very different than a flux gate or a Hall sensor).
Moreover, even if you DO -for some reason- need to understand how the SQUID works you STILL don't need to know much about the microscopic theory; the basic equations for a SQUID can be derived using some basic circuit theory, flux quantization and the Josepson equations (suing the RCSJ model). this will be covered in any number of books (Tinkham's book is a classic; but uses CGS units which can be annoying).

The answer to your question "how does an MPMS" system works is: Read the manual for your particular system.
AFAIK all systems are somewhat different and have different capabilities.