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20022011
most citedEnergy Gaps in Graphene Nanoribbons

5.1k citations

Showing 2009 · cond-mat.mtrl-sciShow all

8 papers · 2 filters

cond-mat.mtrl-sci200938 cited

Spinel ferrite nanocrystals embedded inside ZnO: magnetic, electronic and magneto-transport properties

Shengqiang Zhou, K. Potzger, Qingyu Xu +8

In this paper we show that spinel ferrite nanocrystals (NiFe2O4, and CoFe2O4) can be texturally embedded inside a ZnO matrix by ion implantation and post-annealing. The two kinds o…

cond-mat.mtrl-sci200941 cited

Ferromagnetism and suppression of metallic clusters in Fe implanted ZnO - a phenomenon related to defects?

Shengqiang Zhou, K. Potzger, G. Talut +7

We investigated ZnO(0001) single crystals annealed in high vacuum with respect to their magnetic properties and cluster formation tendency after implant-doping with Fe. While metal…

cond-mat.mtrl-sci200919 cited

Suppression of secondary phase formation in Fe implanted ZnO single crystals

K. Potzger, Shengqiang Zhou, H. Reuther +5

Unwanted secondary phases are one of the major problems in diluted magnetic semiconductor creation. Here, the authors show possibilities to avoid such phases in Fe implanted and po…

cond-mat.mtrl-sci2009705 cited

Excitonic Effects on the Optical Response of Graphene and Bilayer Graphene

Li Yang, Jack Deslippe, Cheol-Hwan Park +2

We present first-principles calculations of many-electron effects on the optical response of graphene, bilayer graphene, and graphite employing the GW-Bethe Salpeter equation appro…

cond-mat.mtrl-sci20091 cited

Broadband electromagnetic response and ultrafast dynamics of few-layer epitaxial graphene

H. Choi, F. Borondics, D. A. Siegel +4

We study the broadband optical conductivity and ultrafast carrier dynamics of epitaxial graphene in the few-layer limit. Equilibrium spectra of nominally buffer, monolayer, and mul…

cond-mat.mtrl-sci2009585 cited

Emergence of the persistent spin helix in semiconductor quantum wells

Jake D. Koralek, Chris Weber, Joe Orenstein +4

According to Noethers theorem, for every symmetry in nature there is a corresponding conservation law. For example, invariance with respect to spatial translation corresponds to co…