Multi-terminal field effect devices comprising a chalcogenide material. The devices include a first terminal, a second terminal and a field effect terminal. Application of a gate signal to the field effect terminal modulates the current passing through the chalcogenide material between the first and second terminals and/or modifies the holding voltage or current of the chalcogenide material between the first and second terminals. The devices may be used as interconnection devices in circuits and networks to regulate current flow between circuit or network elements.