Multiple-beam electron systems have been developed to speed up the engraving process.

His recent interests lie in the area of strongly interacting low dimensional electron systems.

When cooling, first superconducting order appears in the electron system.

Heavy fermion materials belong to the group of strongly correlated electron systems.

Subsequently, it has been applied with success to one-active electron systems.

The "many-body problem" for helium and other few electron systems can be solved quite accurately.

In the strongly correlated electron system, it is necessary to consider the electron-electron interaction.

But from the above derivation, for a 4n electron system, if a is even then b is even.

But for a 4n electron system, if a is odd then b is also odd.

His research included semiconductor physics, low dimensional electron systems, and nanostructures.