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Bulk electronic structure of Mn_5Ge_3/Ge(111) films by angle-resolved photoemission spectroscopy

机译:角分辨光发射光谱法研究Mn_5Ge_3 / Ge(111)薄膜的体电子结构

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摘要

Mn_5Ge_3(001) thin films grown on Ge(111)-c(2 × 8) reconstructed surfaces were studied by angle-resolved photoemission using synchrotron radiation in the 14-94 eV photon energy range. The results obtained in the ΓALM plane and in the ΓAHK plane are in agreement with simulations starting with band structure calculations based on the density functional theory. This provides a unique validation of band structure calculations for a proper description of the electronic properties of Mn_5Ge_3. Only the spectral feature very close to the Fermi level cannot be well explained by the simulation. This departure is discussed in terms of the three-dimensional nature of the sample and of correlation effects.
机译:通过在14-94 eV光子能量范围内使用同步加速器辐射进行角分辨光发射,研究了在Ge(111)-c(2×8)重建表面上生长的Mn_5Ge_3(001)薄膜。在ΓALM平面和ΓAHK平面中获得的结果与从基于密度泛函理论的能带结构计算开始的模拟结果一致。这为能正确描述Mn_5Ge_3的电子特性提供了能带结构计算的唯一验证。模拟不能很好地解释仅非常接近费米能级的光谱特征。根据样本的三维性质和相关效应来讨论这种偏离。

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  • 来源
    《Physical review》 |2013年第16期|165137.1-165137.6|共6页
  • 作者单位

    Laboratoire de Physique des Materiaux et des Surfaces, Universite de Cergy-Pontoise, 5 mail Gay-Lussac, 95031 Cergy-Pontoise, France;

    Laboratoire de Physique des Materiaux et des Surfaces, Universite de Cergy-Pontoise, 5 mail Gay-Lussac, 95031 Cergy-Pontoise, France,DSM, IRAMIS, Service de Physique et Chimie des Surfaces et des Interfaces, CEA-Saclay, 91191 Cif-sur-Yvette, France;

    Laboratoire de Physique des Materiaux et des Surfaces, Universite de Cergy-Pontoise, 5 mail Gay-Lussac, 95031 Cergy-Pontoise, France,DSM, IRAMIS, Service de Physique et Chimie des Surfaces et des Interfaces, CEA-Saclay, 91191 Cif-sur-Yvette, France;

    CNR, Istituto di Struttura della Materia, via Fosso del Cavaliere, 00133 Roma, Italy;

    Laboratoire de Chimie Physique-Matiere et Rayonnement (UMR 7614), Universite Pierre et Marie Curie, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France;

    CNR, Institute for Superconducting and Innovative Materials and Devices (CNR-SPIN), 67100 L'Aquila, Italy,Dipartimento di Fisica, Universita degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito (L'Aquila), Italy;

    CNR, Institute for Superconducting and Innovative Materials and Devices (CNR-SPIN), 67100 L'Aquila, Italy,Dipartimento di Fisica, Universita degli Studi dell'Aquila, Via Vetoio 10, 67010 Coppito (L'Aquila), Italy;

    Laboratoire de Physique des Materiaux et des Surfaces, Universite de Cergy-Pontoise, 5 mail Gay-Lussac, 95031 Cergy-Pontoise, France,Institute of Precision Optical Engineering, Department of Physics, Tongji University, Shangai 200092, People's Republic of China;

    UR1-CNRS/Synchrotron SOLEIL, Saint-Aubin, B.P. 48, 91192 Gif-sur-Yvette Cedex, France;

    Synchrotron SOLEIL, Saint-Aubin, B.P. 48, 91192 Gif-sur-Yvette Cedex, France;

    Synchrotron SOLEIL, Saint-Aubin, B.P. 48, 91192 Gif-sur-Yvette Cedex, France;

    Central Laser Facility, Rutherford Appleton Laboratory, Didcot, Oxon OX11 0QX, United Kingdom;

    Lund University, MAX-lab, P.O. Box 118, 221 00 Lund, Sweden;

    Lund University, MAX-lab, P.O. Box 118, 221 00 Lund, Sweden;

    Laboratoire de Physique des Materiaux et des Surfaces, Universite de Cergy-Pontoise, 5 mail Gay-Lussac, 95031 Cergy-Pontoise, France,DSM, IRAMIS, Service de Physique et Chimie des Surfaces et des Interfaces, CEA-Saclay, 91191 Cif-sur-Yvette, France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    photoemission and photoelectron spectra; electron density of states and band structure of crystalline solids; surface states, band structure, electron density of states; fermi surface: calculations and measurements; effective mass, G factor;

    机译:光发射和光电子光谱;态固体的电子态密度和能带结构;表面态;能带结构;态电子密度;费米表面:计算和测量;有效质量;G因子;

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