Molecular Aharonov-Bohm-type interferometers based on porphyrin nanorings.

ABSTRACT: A goal of molecular electronics and spintronics is to create molecular devices that change their conductance in response to external stimuli. The Aharonov-Bohm (AB) effect implies that an electronic device formed from a quantum ring and metallic leads will exhibit such behavior under external magnetic fields. At first sight, it appears that unrealistically large fields would be required to significantly alter the conductance of a molecular ring. However, the sensitivity of a molecular AB interferometer to magnetic fields can be increased by weakening the coupling between the molecular ring and the metallic leads. An ideal molecular ring for an AB interferometer has a large radius (to encompass a larger fraction of the AB flux quantum), and a small effective mass (high electron mobility) to

SUBMITTER: Cheng CY 

PROVIDER: S-EPMC11795298 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature