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Transport signatures of interacting fermions in quasi-one-dimensional topological superconductors

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Transport signatures of interacting fermions in quasi-one-dimensional topological superconductors. / Meidan, Dganit; Romito, Alessandro; Brouwer, Piet W.
In: Physical review B, Vol. 93, No. 12, 125433, 29.03.2016.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Meidan D, Romito A, Brouwer PW. Transport signatures of interacting fermions in quasi-one-dimensional topological superconductors. Physical review B. 2016 Mar 29;93(12):125433. doi: 10.1103/PhysRevB.93.125433

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Meidan, Dganit ; Romito, Alessandro ; Brouwer, Piet W. / Transport signatures of interacting fermions in quasi-one-dimensional topological superconductors. In: Physical review B. 2016 ; Vol. 93, No. 12.

Bibtex

@article{bf75206beb7845c99b5fad6ae93abe77,
title = "Transport signatures of interacting fermions in quasi-one-dimensional topological superconductors",
abstract = "A topological superconducting wire with an effective time reversal symmetry is known to have a $\mathbb{Z}_8$ topological classification in the presence of interactions. The topological index $|n| \le 4$ counts the number of Majorana end states, negative $n$ corresponding to end states that are odd under time reversal. If such a wire is weakly coupled to a normal-metal lead, interactions induce a Kondo-like correlated state if $|n| = 4$. We show that the Kondo-like state manifests itself in an anomalous temperature dependence of the zero-bias conductance and by an anomalous Fano factor for the zero-temperature normally-reflected current at finite bias. We also consider the splitting of the effective Kondo resonance for weak symmetry-breaking perturbations.",
keywords = "cond-mat.mes-hall",
author = "Dganit Meidan and Alessandro Romito and Brouwer, {Piet W.}",
year = "2016",
month = mar,
day = "29",
doi = "10.1103/PhysRevB.93.125433",
language = "English",
volume = "93",
journal = "Physical review B",
issn = "2469-9950",
publisher = "AMER PHYSICAL SOC",
number = "12",

}

RIS

TY - JOUR

T1 - Transport signatures of interacting fermions in quasi-one-dimensional topological superconductors

AU - Meidan, Dganit

AU - Romito, Alessandro

AU - Brouwer, Piet W.

PY - 2016/3/29

Y1 - 2016/3/29

N2 - A topological superconducting wire with an effective time reversal symmetry is known to have a $\mathbb{Z}_8$ topological classification in the presence of interactions. The topological index $|n| \le 4$ counts the number of Majorana end states, negative $n$ corresponding to end states that are odd under time reversal. If such a wire is weakly coupled to a normal-metal lead, interactions induce a Kondo-like correlated state if $|n| = 4$. We show that the Kondo-like state manifests itself in an anomalous temperature dependence of the zero-bias conductance and by an anomalous Fano factor for the zero-temperature normally-reflected current at finite bias. We also consider the splitting of the effective Kondo resonance for weak symmetry-breaking perturbations.

AB - A topological superconducting wire with an effective time reversal symmetry is known to have a $\mathbb{Z}_8$ topological classification in the presence of interactions. The topological index $|n| \le 4$ counts the number of Majorana end states, negative $n$ corresponding to end states that are odd under time reversal. If such a wire is weakly coupled to a normal-metal lead, interactions induce a Kondo-like correlated state if $|n| = 4$. We show that the Kondo-like state manifests itself in an anomalous temperature dependence of the zero-bias conductance and by an anomalous Fano factor for the zero-temperature normally-reflected current at finite bias. We also consider the splitting of the effective Kondo resonance for weak symmetry-breaking perturbations.

KW - cond-mat.mes-hall

U2 - 10.1103/PhysRevB.93.125433

DO - 10.1103/PhysRevB.93.125433

M3 - Journal article

VL - 93

JO - Physical review B

JF - Physical review B

SN - 2469-9950

IS - 12

M1 - 125433

ER -