Synthesis, structural properties and magnetism of novel graphene-based materials

新型石墨烯基材料的合成、结构性能及磁性

• 批准号: 321825916
• 负责人: Professor Dr. Clemens Laubschat
• 金额: --
• 依托单位: Faculty of Physics
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/321825916?language=en
• 关键词: Synthesis; structural; properties; magnetism; novel

The proposal deals with the development of synthesis procedures for the creation of novel graphene-based materials with well-defined crystal structure and intriguing electronic and magnetic properties. The project is focused on the comprehensive characterization of the respective crystallographic (by means of scanning tunnel microscopy (STM), low energy electron diffraction (LEED), photoelectron diffraction) and electronic structure (by means of angle-resolved photoemission (ARPES) and near-eadge X-ray absorption spectroscopy (NEXAFS)). This includes the following tasks: i) Elaboration of synthesis conditions for the formation of commensurate graphene layers on Ni and Co substrates and study of structural phase transitions at the interface. ii) Synthesis of nitrogen- and boron-doped graphene with sublattice asymmetry of doping. Analysis of the influence of impurities on the electronic properties of graphene. iii) Preparation of graphene interfaces with rare-earth (RE) elements on ferromagnetic substrates and investigation of the interplay between electronic states of graphene, RE layer and ferromagnet. iv) Synthesis of pristine and impurity-doped graphene nanoribbons (GNR) and precise characterization of their structural and electronic properties. Metallization by intercalation with alkali metals and investigation of the resulting exotic low-dimensional electronic properties.

该提案涉及开发合成程序，以创建具有定义明确的晶体结构以及有趣的电子和磁性的新型石墨烯基材料。该项目的重点是相应晶体学的全面表征（通过扫描隧道显微镜（STM），低能电子衍射（LEED），光电子衍射）和电子结构（通过角度分辨光光发射（ARPE）和接近-Eadge X射线吸收光谱（NEXAFS））。这包括以下任务：i）详细说明在Ni和Co底物上形成相应石墨烯层的合成条件，并研究界面处的结构相变。 ii）与掺杂的sublattice不对称的氮和硼掺杂石墨烯的合成。分析杂质对石墨烯电子特性的影响。 iii）在铁磁底物上制备具有稀土（re）元素的石墨烯界面，并研究石墨烯，re层和铁磁铁电子状态之间的相互作用。 iv）原始和杂质掺杂的石墨烯纳米纤维（GNR）的合成以及其结构和电子特性的精确表征。通过与碱金属插入的金属化以及对产生的外来低维电子性能的研究。

项目成果

Highly Ordered and Polycrystalline Graphene on Co(0001) Intercalated by Oxygen

• DOI: 10.1021/acs.jpcc.0c04830
• 发表时间: 2020-07
• 期刊: Journal of Physical Chemistry C
• 影响因子: 3.7
• 作者: V. O. Shevelev;K. A. Bokai;A. Makarova;D. Marchenko;O. Vilkov;V. Mikhailovskii;D. Vyalikh;D. Usachov

Large-Scale Sublattice Asymmetry in Pure and Boron-Doped Graphene.

• DOI: 10.1021/acs.nanolett.6b01795
• 发表时间: 2016-06
• 期刊: Nano letters
• 影响因子: 10.8
• 作者: D. Usachov;A. Fedorov;O. Vilkov;A. Petukhov;A. Rybkin;A. Ernst;M. Otrokov;E. Chulkov;I. Ogorodnikov;M. Kuznetsov;L. Yashina;E. Kataev;A. V. Erofeevskaya;V. Voroshnin;V. K. Adamchuk;C. Laubschat;D. Vyalikh

Spin-polarized Fermi surface, hole-doping and band gap in graphene with boron impurities.

• DOI: 10.1039/c8nr08339h
• 发表时间: 2018-12
• 期刊: Nanoscale
• 影响因子: 6.7
• 作者: A. Fedorov;L. Yashina;O. Vilkov;C. Laubschat;D. Vyalikh;D. Usachov

Cobalt-assisted recrystallization and alignment of pure and doped graphene.

纯石墨烯和掺杂石墨烯的钴辅助再结晶和排列

• DOI: 10.1039/c8nr03183e
• 发表时间: 2018
• 期刊: Nanoscale
• 影响因子: 6.7
• 作者: D. Yu. Usachov;K.A. Bokai;D.E. Marchenko;A.V. Fedorov;V.O. Shevelev;O. Yu. Vilkov;E.Yu. Kataev;L.V. Yashina;E. Rühl;C. Laubschat;D.V. Vyalikh
• 通讯作者: D.V. Vyalikh

Decoding the structure of interfaces and impurities in 2D materials by photoelectron holography

通过光电子全息术解码二维材料中的界面和杂质结构

• DOI: 10.1088/2053-1583/ab3ea8
• 发表时间: 2019
• 期刊: 2D Materials
• 影响因子: 5.5
• 作者: D.Y. Usachov;A.V. Tarasov;F. Matsui;M. Muntwiler;K.A. Bokai;V.O. Shevelev;O.Y. Vilkov;M.V. Kuznetsov;L.V. Yashina;C. Laubschat;A. Cossaro;L. Floreano;A. Verdini;D.V. Vyalikh
• 通讯作者: D.V. Vyalikh