cryogenic scanning tunneling microscope (stm)

How Does a Cryogenic STM Work?

A cryogenic STM operates using the same basic principles as a standard STM but under extremely low temperatures. An ultra-sharp conducting tip is brought very close to the sample surface, and a bias voltage is applied. Electrons tunnel between the tip and the sample, generating a tunneling current. By scanning the tip across the surface and measuring the tunneling current, a topographical map at the atomic level is produced.

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