منابع مشابه
Inducing and optimizing magnetism in graphene nanomeshes
Using first-principles calculations, we explore the electronic and magnetic properties of graphene nanomesh (GNM), a regular network of large vacancies, produced either by lithography or nanoimprint. When removing an equal number of A and B sites of the graphene bipartite lattice, the nanomesh made mostly of zigzag (armchair) -type edges exhibit antiferromagnetic (spin unpolarized) states. In c...
متن کاملGraphene nanomeshes: Onset of conduction band gaps
0009-2614/$ see front matter 2010 Elsevier B.V. A doi:10.1016/j.cplett.2010.08.086 ⇑ Corresponding author. Fax: + 1 310 267 0319. E-mail address: [email protected] (D. Neuhause Hückel simulations of large finite graphene nanomeshes with lithographically induced holes show sizable band gaps in the conduction while the optical absorption has generally the same semi-metal character as pure graphen...
متن کاملGraphene Edge Spins: Spintronics and Magnetism in Graphene Nanomeshes
We have fabricated low-defect graphene nanomeshes (GNMs) by using a non-lithographic method and observed large-amplitude ferromagnetism even at room temperature, only when pore edges of the GNMs were hydrogenterminated. The observed correlation between the inter-pore spacing and magnetism and also magnetic force microscope observations suggest that it is attributed to polarzied electron spins l...
متن کاملSolution-processable graphene nanomeshes with controlled pore structures
Graphene nanomeshes (GNMs) which can be cheaply produced on a large scale and processed through wet approaches are important materials for various applications, including catalysis, composites, sensors and energy related systems. Here, we report a method for large scale preparation of GNMs by refluxing reduced graphene oxide sheets in concentrated nitric acid solution (e.g., 8 moles per liter)....
متن کاملGrowth of semiconducting graphene on palladium.
We report in situ scanning tunneling microscopy studies of graphene growth on Pd(111) during ethylene deposition at temperatures between 723 and 1023 K. We observe the formation of monolayer graphene islands, 200-2000 A in size, bounded by Pd surface steps. Surprisingly, the topographic image contrast from graphene islands reverses with tunneling bias, suggesting a semiconducting behavior. Scan...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2012
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.85.201414