Quantum coherence of the molecular states and their corresponding currents in nanoscale Aharonov-Bohm interferometers

Jian Heng Liu, Matisse Wei Yuan Tu, Wei Min Zhang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

By considering a nanoscale Aharonov-Bohm (AB) interferometer consisting of a laterally coupled double dot coupled to the source and drain electrodes, we investigate the AB phase dependence of the bonding and antibonding states and the transport currents via the bonding and antibonding state channels. The relations of the AB phase dependence between the quantum states and the associated transport current components are analyzed, which provides useful information for the reconstruction of quantum states through the measurement of the transport current in such systems. We also obtain the validity of the experimental analysis [given in T. Hatano, Phys. Rev. Lett. 106, 076801 (2011)PRLTAO0031-900710.1103/PhysRevLett.106.076801] that bonding state currents in different energy configurations are almost the same. With the coherent properties in the quantum dot states as well as in the transport currents, we also provide a way to manipulate the bonding and antibonding states through the AB magnetic flux.

Original languageEnglish
Article number045403
JournalPhysical Review B
Volume94
Issue number4
DOIs
Publication statusPublished - 2016 Jul 5

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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