Revealing the hidden correlated electronic structure of strained graphene

L. Craco; D. Selli; G. Seifert; S. Leoni

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Revealing the hidden correlated electronic structure of strained graphene

机译：揭示应变石墨烯的隐藏的相关电子结构

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We explore the effect of isotropic strain on the electronic structure of graphene. It is shown that the interplay between one-particle band narrowing and sizable multiorbital Coulomb interactions induces a transition from a Dirac-liquid semimetal to an orbital selective metal characterized by narrow π-orbital Kondo clouds and abrupt downshift of σ~* states. The correlated electronic structure we derive is promising in the sense that it leads to results that might explain the reshaped electronic structure of graphene nanobubbles probed in scanning tunneling microscopy. Our proposal is a key step in understanding the intricate and interdependent changes in orbital and electronic degrees of freedom of strained materials with hexagonal lattice structure.

机译：我们探索各向同性应变对石墨烯电子结构的影响。结果表明，单粒子能带变窄和可观的多轨道库仑相互作用之间的相互作用引起了狄拉克-液体半金属向以π-轨道近藤云层狭窄和σ〜*态的急剧下降为特征的轨道选择性金属的转变。我们得出的相关电子结构在一定意义上是有希望的，因为它导致的结果可能解释了在扫描隧道显微镜中探测到的石墨烯纳米气泡的重塑电子结构。我们的建议是理解具有六边形晶格结构的应变材料的轨道和电子自由度的复杂而相互依赖的变化的关键步骤。

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来源
《Physical review》 |2015年第20期|205120.1-205120.6|共6页
作者
L. Craco; D. Selli; G. Seifert; S. Leoni;
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作者单位

Instituto de Fisica, Universidade Federal de Mato Grosso, 78060-900, Cuiaba, MT, Brazil,Theoretical Chemistry, Technische Universitaet Dresden, 01062 Dresden, Germany;

Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany,School of Chemistry, Cardiff University, Cardiff, CF10 3AT, United Kingdom;

Theoretical Chemistry, Technische Universitaet Dresden, 01062 Dresden, Germany;

School of Chemistry, Cardiff University, Cardiff, CF10 3AT, United Kingdom;

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正文语种 eng
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metal-insulator transitions and other electronic transitions; scattering mechanisms and kondo effect; theories and models of many-electron systems;

机译：金属-绝缘体过渡和其他电子过渡;散射机制和近藤效应;多电子系统的理论和模型;

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2. Two-dimensional electronic and vibrational band structure of uniaxially strained graphene from ab initio calculations [J] . Marcel Mohr, Konstantinos Papagelis, Janina Maultzsch, Physical review . 2009,第20期

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3. Revealing the electronic band structure of trilayer graphene on SiC(*) [J] . C. COLETTI Il Nuovo Cimento della Societa Italiana di Fisica, C. Geophysics and space physics . 2014,第4期

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Revealing the hidden correlated electronic structure of strained graphene

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