ELI5: Explain Like I'm 5

Composite fermion

Okay kiddo, picture this: imagine little Lego pieces that come together to form bigger structures. In the same way, atoms are like little Lego pieces that come together to form bigger things like molecules.

Some atoms are called fermions, and they're kind of like the Lego blocks that are stuck together with glue - they can't move around very much. But scientists found a way to make these fermions more flexible, like loose Lego pieces that can come apart and move around more freely. They did this by combining fermions with something called a magnetic field.

When fermions are combined with a magnetic field in a special way, they form something called composite fermions. These composite fermions act like they have less charge than regular fermions, because that magnetic field makes them act as if they're surrounded by little whirlpools of charged particles. The whirlpools work together to cancel out some of the original fermion's charge.

So basically, composite fermions are little Lego pieces made of fermions and a magnetic field, and they act like they have less charge than regular fermions. Scientists study them to learn more about how atoms and particles work.
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