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Spin-electric Berry phase shift in triangular molecular magnets
University of Isfahan, Iran.
Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering.ORCID iD: 0000-0003-4489-7561
Uppsala University.
2016 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 94, no 23, 235423Article in journal (Refereed) Published
Abstract [en]

We propose a Berry phase effect on the chiral degrees of freedom of a triangular magnetic molecule. The phase is induced by adiabatically varying an external electric field in the plane of the molecule via a spin-electric coupling mechanism present in these frustrated magnetic molecules. The Berry phase effect depends on spin-orbit interaction splitting and on the electric dipole moment. By varying the amplitude of the applied electric field, the Berry phase difference between the two spin states can take any arbitrary value between zero and π, which can be measured as a phase shift between the two chiral states by using spin-echo techniques. Our result can be used to realize an electric-field-induced geometric phase-shift gate acting on a chiral qubit encoded in the ground-state manifold of the triangular magnetic molecule. © 2016 American Physical Society.

Place, publisher, year, edition, pages
2016. Vol. 94, no 23, 235423
National Category
Physical Sciences
Research subject
Natural Science, Physics
Identifiers
URN: urn:nbn:se:lnu:diva-61166DOI: 10.1103/PhysRevB.94.235423ISI: 000394546100004ScopusID: 2-s2.0-85007574217OAI: oai:DiVA.org:lnu-61166DiVA: diva2:1079384
Available from: 2017-03-08 Created: 2017-03-08 Last updated: 2017-03-16Bibliographically approved

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