Weak Localization and Transport Gap in Graphene Antidot Lattices Export

@article{citeulike:3859168, abstract = {We fabricated and measured antidot lattices in single layer graphene with lattice periods down to 90 nm. In large-period lattices, a well-defined quantum Hall effect is observed. Going to smaller antidot spacings the quantum Hall effect gradually disappears, following a geometric size effect. Lattices with narrow constrictions between the antidots behave as networks of nanoribbons, showing a high-resistance state and a transport gap of a few mV around the Dirac point. We observe pronounced weak localization in the magnetoresistance, indicating strong intervalley scattering at the antidot edges. The area of phase-coherent paths is bounded by the unit cell size at low temperatures, so each unit cell of the lattice acts as a ballistic cavity.}, archivePrefix = {arXiv}, author = {Eroms, J. and Weiss, D.}, citeulike-article-id = {3859168}, citeulike-linkout-0 = {http://arxiv.org/abs/0901.0840}, citeulike-linkout-1 = {http://arxiv.org/pdf/0901.0840}, day = {16}, eprint = {0901.0840}, keywords = {dots, graphene}, month = {Sep}, posted-at = {2009-01-08 02:31:15}, priority = {2}, title = {Weak Localization and Transport Gap in Graphene Antidot Lattices}, url = {http://arxiv.org/abs/0901.0840}, year = {2009} }

TY - JOUR ID - citeulike:3859168 L3 - citeulike-article-id:3859168 N2 - We fabricated and measured antidot lattices in single layer graphene with lattice periods down to 90 nm. In large-period lattices, a well-defined quantum Hall effect is observed. Going to smaller antidot spacings the quantum Hall effect gradually disappears, following a geometric size effect. Lattices with narrow constrictions between the antidots behave as networks of nanoribbons, showing a high-resistance state and a transport gap of a few mV around the Dirac point. We observe pronounced weak localization in the magnetoresistance, indicating strong intervalley scattering at the antidot edges. The area of phase-coherent paths is bounded by the unit cell size at low temperatures, so each unit cell of the lattice acts as a ballistic cavity. TI - Weak Localization and Transport Gap in Graphene Antidot Lattices KW - dots KW - graphene AU - Eroms, J AU - Weiss, D PY - 2009/Sep/16/ UR - http://arxiv.org/abs/0901.0840 ER -