Spin dependent conductance of a quantum dot side attached to topological superconductors as a probe of Majorana fermion states

Krychowski D, Lipinski S, Cuniberti G (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Acta Physica Polonica A Polish Academy of Sciences

Book Volume: 133

Pages Range: 552-554

Journal Issue: 3

DOI: 10.12693/APhysPolA.133.552

Abstract

Spin-polarized transport through a quantum dot side attached to a topological superconductor and coupled to a pair of normal leads is discussed in Coulomb and Kondo regimes. For discussion of Coulomb range equation of motion method with extended Hubbard I approximation is used and Kondo regime is analyzed by Kotliar-Ruckenstein slave boson approach. Apart from the occurrence of zero bias anomaly the presence of Majorana states reflects also in splitting of Coulomb lines. In the region of Coulomb borders the spin dependent negative differential conductance is observed. Due to the low energy scale of Kondo effect this probe allows for detection of Majorana states even for extremely weak coupling with topological wire. In this range no signatures of Majorana states appear in Coulomb blockade dominated transport.

Involved external institutions

Polska Akademia Nauk (PAN) / Polish Academy of Sciences PL Poland (PL) Technische Universität Dresden DE Germany (DE)

How to cite

APA:

Krychowski, D., Lipinski, S., & Cuniberti, G. (2018). Spin dependent conductance of a quantum dot side attached to topological superconductors as a probe of Majorana fermion states. Acta Physica Polonica A, 133(3), 552-554. https://doi.org/10.12693/APhysPolA.133.552

MLA:

Krychowski, Damian, S. Lipinski, and Gianaurelio (Giovanni) Cuniberti. "Spin dependent conductance of a quantum dot side attached to topological superconductors as a probe of Majorana fermion states." Acta Physica Polonica A 133.3 (2018): 552-554.

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