التفاصيل البيبلوغرافية
| العنوان: |
Probing the local electronic structure of isovalent Bi atoms in InP |
| المؤلفون: |
Krammel, CM Christian, Rodrigues Da Cruz, Adonai, Flatté, ME Michael, Roy, M, Maksym, PA, Zhang, LY, Wang, K, Li, YY, Wang, SM, Koenraad, PM Paul |
| المصدر: |
ISSN. |
| بيانات النشر: |
Cornell University Library |
| سنة النشر: |
2019 |
| المجموعة: |
Eindhoven University of Technology (TU/e): Research Portal |
| الوصف: |
Cross-sectional scanning tunneling microscopy (X-STM) is used to experimentally study the influence of isovalent Bi atoms on the electronic structure of InP. We map the spatial pattern of the Bi impurity state, which originates from Bi atoms down to the sixth layer below the surface, in topographic, filled state X-STM images on the natural $\{110\}$ cleavage planes. The Bi impurity state has a highly anisotropic bowtie-like structure and extends over several lattice sites. These Bi-induced charge redistributions extend along the $\left\langle 110\right\rangle$ directions, which define the bowtie-like structures we observe. Local tight-binding calculations reproduce the experimentally observed spatial structure of the Bi impurity state. In addition, the influence of the Bi atoms on the electronic structure is investigated in scanning tunneling spectroscopy measurements. These measurements show that Bi induces a resonant state in the valence band, which shifts the band edge towards higher energies. This is in good agreement to first principles calculations. Furthermore, we show that the energetic position of the Bi induced resonance and its influence on the onset of the valence band edge depend crucially on the position of the Bi atoms relative to the cleavage plane. Cross-sectional scanning tunneling microscopy (X-STM) is used to experimentally study the influence of isovalent Bi atoms on the electronic structure of InP. We map the spatial pattern of the Bi impurity state, which originates from Bi atoms down to the sixth layer below the surface, in topographic, filled state X-STM images on the natural {110} cleavage planes. The Bi impurity state has a highly anisotropic bowtie-like structure and extends over several lattice sites. These Bi-induced charge redistributions extend along the ⟨110⟩ directions, which define the bowtie-like structures we observe. Local tight-binding calculations reproduce the experimentally observed spatial structure of the Bi impurity state. In addition, the influence of the Bi atoms on ... |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf; text/html |
| اللغة: |
English |
| العلاقة: |
http://repository.tue.nl/912970Test |
| الإتاحة: |
http://repository.tue.nl/912970Test |
| حقوق: |
Copyright (c) Krammel, CM Christian ; Copyright (c) Rodrigues Da Cruz, Adonai ; Copyright (c) Flatté, ME Michael ; Copyright (c) Roy, M ; Copyright (c) Maksym, PA ; Copyright (c) Zhang, LY ; Copyright (c) Wang, K ; Copyright (c) Li, YY ; Copyright (c) Wang, SM ; Copyright (c) Koenraad, PM Paul |
| رقم الانضمام: |
edsbas.9D5A3147 |
| قاعدة البيانات: |
BASE |
