Fermi velocity renormalization and dynamical gap generation in graphene

C. Popovici; C. S. Fischer; L. von Smekal

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Fermi velocity renormalization and dynamical gap generation in graphene

机译：石墨烯中的费米速度重正化和动态间隙生成

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We study the renormalization of the Fermi velocity by the long-range Coulomb interactions between the charge carriers in the Dirac-cone approximation for the effective low-energy description of the electronic excitations in graphene at half-filling. Solving the coupled system of Dyson-Schwinger equations for the dressing functions in the corresponding fermion propagator with various approximations for the particle-hole polarization, we observe that Fermi velocity renormalization effects generally lead to a considerable increase of the critical coupling for dynamical gap generation and charge-density-wave formation at the semimetal-insulator transition.

机译：我们研究了狄拉克锥近似中电荷载流子之间的长距离库仑相互作用对费米速度的重新归一化，以有效地描述半填充石墨烯中电子激发的低能。用相应的费米子传播子求解带相应的费米子传播器中的修整函数的戴森-施温格方程的耦合系统，我们观察到费米速度的重新归一化效应通常会导致动态间隙产生的临界耦合大大增加，并且半金属-绝缘体过渡处的电荷密度波形成。

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来源
《Physical review》 |2013年第20期|205429.1-205429.9|共9页
作者
C. Popovici; C. S. Fischer; L. von Smekal;
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作者单位

Institut fuer Theoretische Physik, Justus-Liebig-Universitaet Giessen, Heinrich-Buff-Ring 16, 35392 Giessen, Germany;

Institut fuer Theoretische Physik, Justus-Liebig-Universitaet Giessen, Heinrich-Buff-Ring 16, 35392 Giessen, Germany;

Institut fuer Theoretische Physik, Justus-Liebig-Universitaet Giessen, Heinrich-Buff-Ring 16, 35392 Giessen, Germany,Theoriezentrum, Institut fuer Kernphysik, Technische Universitdt Darmstaaet, 64289 Darmstadt, Germany;

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non-fermi-liquid ground states, electron phase diagrams and phase transitions in model systems; other nonperturbative techniques; strongly correlated electron systems; heavy fermions; other nonperturbative techniques;

机译：模型系统中的非费米液体基态;电子相图和相变;其他非摄动技术;强相关电子系统;重费米子其他非摄动技术;

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专利

1. Dynamical gap generation in graphene with frequency-dependent renormalization effects [J] . M. E. Carrington, C. S. Fischer, L. von Smekal, Physical review. B, Condensed Matter And Materals Physics . 2016,第12期

机译：石墨烯中动态间隙的产生具有频率相关的归一化效应
2. Dynamical gap generation in graphene with frequency-dependent renormalization effects [J] . Carrington M. E., Fischer C. S., von Smekal L., Physical review, B . 2016,第12期

机译：石墨烯中动态间隙的产生具有频率相关的重归一化效应
3. Many-body filling factor dependent renormalization of Fermi velocity in graphene in strong magnetic field [J] . Sokolik Alexey A., Lozovik Yurii E. Physical review. B, Condensed Matter And Materals Physics . 2019,第8期

机译：强磁场中石墨烯费米速度的多体填充因子依赖性重归一化
4. A New Method of Evaluating the Dynamical Chiral Symmetry Breaking Scale and the Chiral Restoration Temperature in General Gauge Theories by Using the Non-Perturbative Renormalization Group Analyses with General 4-Fermi Effective Interaction Space [C] . Ken-Ichi Aoki, Daisuke Sato, Kazuhiro Miyashita International Workshop on Perspectives of Strong Coupling Gauge Theories . 2011

机译：一种新的方法，通过使用非捕获性重整组分析通过4-FERMI有效互动空间分析了一般规格理论中的动态手性对称破碎尺度和手性修复温度
5. Hot Dirac Fermion dynamics and coherently controlled photocurrent generation in epitaxial graphene. [D] . Sun, Dong. 2009

机译：外延石墨烯中的热狄拉克费米子动力学和相干控制的光电流生成。
6. Tunable Fermi level and hedgehog spin texture in gapped graphene [O] . A. Varykhalov, J. Sánchez-Barriga, D. Marchenko, -1

机译：间隙石墨烯中可调节的费米能级和刺猬自旋结构
7. Fermi velocity renormalization and dynamical gap generation in graphene [O] . Popovici, C., Fischer, C. S., von Smekal, L. 2015

机译：石墨烯中费米速度重整化和动态间隙产生
8. Renormalization of the Graphene Dispersion Velocity Determined from Scanning Tunneling Spectroscopy. [R] . Chae, J., Jung, S., Young, A. F., 2012

机译：扫描隧道谱确定石墨烯分散速度的重整化。

Fermi velocity renormalization and dynamical gap generation in graphene

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