First principle study of molecular quantum dot cellular automata using mixed valence compounds

T. Purkayastha, Debashis De, B. Das, T. Chattapadhyay

    Research output: Chapter in Book/Conference paperConference paper

    Abstract

    © 2016 IEEE.Quantum dot Cellular Automata (QCA) is one of the major paradigm shifts in the field of nanoscale computing. Among various QCA alternatives, molecular QCA claims to have extremely high device density along with room temperature fabrication advantage. In a molecular QCA the quantum dots are formed within the redox centers of a molecule and columbic interaction between the molecules form the QCA network. In the proposed work a molecular four-dot QCA cell has been designed using a mixed-valence compound. A c/oso-hexaborate structure has been utilized to form the central molecule along with the four corner molecules responsible for forming the four dots. The corner molecules are observed to have a resonating characteristic. The counterion effect of the proposed mixed-valence compound is responsible for the formation of the QCA cell. The counterion effect is verified using combined DFT and NEGF studies revealing the charge localization at the two diagonal dots, which is the fundamental property of a QCA cell.
    Original languageEnglish
    Title of host publicationProceedings of the 3rd International Conference on Devices, Circuits and Systems
    EditorsV Rao, C Sarkar, D Nirmal, M Kumar
    PublisherIEEE, Institute of Electrical and Electronics Engineers
    Pages244-248
    Number of pages5
    ISBN (Print)9781509023097
    DOIs
    Publication statusPublished - 2016
    Event2016 3rd International Conference on Devices, Circuits and Systems - Coimbatore, India
    Duration: 3 Mar 20165 Mar 2016

    Conference

    Conference2016 3rd International Conference on Devices, Circuits and Systems
    CountryIndia
    CityCoimbatore
    Period3/03/165/03/16

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