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dc.contributor.authorCinar, M. Neset
dc.contributor.authorSevincli, H.
dc.descriptionCinar, M. Neset/0000-0002-3340-1690; Sevincli, Haldun/0000-0002-1896-2588en_US
dc.description.abstractGraphene antidot lattices (GALs) are two-dimensional (2D) monolayers with periodically placed holes in otherwise pristine graphene. We investigate the electronic properties of symmetric and asymmetric GAL structures having hexagonal holes, and show that anisotropic 2D GALs can display a dimensional crossover such that effectively one-dimensional (1D) electronic structures can be realized in two dimen-sions around the charge neutrality point. We investigate the transport and thermoelectric properties of these 2D GALs by using the nonequilibrium Green function method. Dimensional crossover manifests itself as transmission plateaus, a characteristic feature of 1D systems, and enhancement of thermoelec-tric efficiency, where thermoelectric figure of merit, zT, can be as high as 0.9 at room temperature. We also study the transport properties in the presence of Anderson disorder and find that mean free paths of effectively 1D electrons of anisotropic configuration are much longer than their isotropic counterparts. We further argue that dimensional crossover due to broken symmetry and enhancement of thermoelectric efficiency can be nanostructuring strategy virtually for all 2D materials.en_US
dc.description.sponsorshipFlag-Era JTC 2017 project 'MECHANIC' - TUBITAK [117F480]en_US
dc.description.sponsorshipWe acknowledge financial support from the Flag-Era JTC 2017 project 'MECHANIC' (funded by TUBITAK under Grant No. 117F480).en_US
dc.publisherAMER PHYSICAL SOCen_US
dc.titleDimensional Crossover and Enhanced Thermoelectric Efficiency Due to Broken Symmetry in Graphene Antidot Latticesen_US
dc.relation.journalPhysical Review Applieden_US
dc.contributor.departmentIzmir Isntitute of Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US

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