Report
Effect of interatomic repulsion on Majorana zero modes in a coupled quantum-dot-superconducting-nanowire hybrid system
| العنوان: | Effect of interatomic repulsion on Majorana zero modes in a coupled quantum-dot-superconducting-nanowire hybrid system |
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| المؤلفون: | Perez, R. Kenyi Takagui, Aligia, A. A. |
| المصدر: | Phys. Rev. B 109, 075416 (2023) |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Superconductivity |
| الوصف: | We study the low-energy eigenstates of a topological superconductor wire modeled by a Kitaev chain, which is connected at one of its ends to a quantum dot through nearest-neighbor (NN) hopping and NN Coulomb repulsion. Using an unrestricted Hartree-Fock approximation to decouple the Coulomb term, we obtain that the quality of the Majorana end states is seriously affected by this term only when the dependence of the low-lying energies with the energy of the quantum dot shows a "diamond" shape, characteristic of short wires. We discuss limitations of the simplest effective models to describe the physics. We expect the same behavior in more realistic models for topological superconducting wires. Comment: 7 pages, 7 figures, figures improved and more details provided |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.109.075416 |
| URL الوصول: | http://arxiv.org/abs/2309.10888 |
| رقم الانضمام: | edsarx.2309.10888 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.109.075416 |
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