Switchable Metal–Insulator Phase Transition Metamaterials

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dc.contributor.authorHajisalem, Ghazal
dc.contributor.authorNezami, Mohammadreza S.
dc.contributor.authorGordon, Reuven
dc.date.accessioned2023-04-27T14:20:54Z
dc.date.available2023-04-27T14:20:54Z
dc.date.copyright2017en_US
dc.date.issued2017-04-05
dc.description.abstractWe investigate the switching of a gap plasmon tunnel junction between conducting and insulating states. Hysteresis is observed in the second and the third harmonic generation power dependence, which arises by thermally induced disorder (“melting”) of a two-carbon self-assembled monolayer between an ultraflat gold surface and metal nanoparticles. The hysteresis is observed for a variety of nanoparticle sizes, but not for larger tunnel junctions where there is no appreciable tunneling. By combining quantum corrected finite-difference time-domain simulations with nonlinear scattering theory, we calculate the changes in the harmonic generation between the tunneling and the insulating states, and good agreement is found with the experiments. This paves the way to a new class of metal–insulator phase transition switchable metamaterials, which may provide next-generation information processing technologies.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThe authors acknowledge funding from the NSERC Discovery Grant program.en_US
dc.identifier.citationHajisalem, G., Nezami, M. S., & Gordon, R. (2017). Switchable Metal–Insulator Phase Transition Metamaterials. Nano Letters, 17(5), 2940–2944. https://doi.org/10.1021/acs.nanolett.7b00180en_US
dc.identifier.urihttps://doi.org/10.1021/acs.nanolett.7b00180
dc.identifier.urihttp://hdl.handle.net/1828/14996
dc.language.isoenen_US
dc.publisherNano Lettersen_US
dc.subjectPhase transition materials
dc.subjectmetamaterials
dc.subjectsecond and third harmonic generation
dc.subjectquantum tunneling
dc.subjectplasmonics
dc.subjectself-assembly
dc.subject.departmentDepartment of Electrical and Computer Engineering
dc.titleSwitchable Metal–Insulator Phase Transition Metamaterialsen_US
dc.typePostprinten_US

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