Next Article in Journal
Feynman Paths and Weak Values
Next Article in Special Issue
Thermoelectricity and Thermodiffusion in Magnetic Nanofluids: Entropic Analysis
Previous Article in Journal
Analysis of Chaotic Behavior in a Novel Extended Love Model Considering Positive and Negative External Environment
Previous Article in Special Issue
Thermodynamics at Solid–Liquid Interfaces
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle
Entropy 2018, 20(5), 366;

Thermoelectric Efficiency of a Topological Nano-Junction

Physics Institute, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago 7820436, Chile
Research Center for Nanotechnology and Advanced Materials CIEN-UC, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago 7820436, Chile
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Received: 24 March 2018 / Revised: 10 May 2018 / Accepted: 11 May 2018 / Published: 14 May 2018
(This article belongs to the Special Issue Mesoscopic Thermodynamics and Dynamics)
View Full-Text   |   Download PDF [1403 KB, uploaded 14 May 2018]   |  


We studied the non-equilibrium current, transport coefficients and thermoelectric performance of a nano-junction, composed by a quantum dot connected to a normal superconductor and a topological superconductor leads, respectively. We considered a one-dimensional topological superconductor, which hosts two Majorana fermion states at its edges. Our results show that the electric and thermal currents across the junction are highly mediated by multiple Andreev reflections between the quantum dot and the leads, thus leading to a strong nonlinear dependence of the current on the applied bias voltage. Remarkably, we find that our system reaches a sharp maximum of its thermoelectric efficiency at a finite bias, when an external magnetic field is imposed upon the junction. We propose that this feature can be used for accurate temperature sensing at the nanoscale. View Full-Text
Keywords: Keldysh formalism; topological superconductors; thermoelectricity; nano-junction Keldysh formalism; topological superconductors; thermoelectricity; nano-junction

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Álamo, M.; Muñoz, E. Thermoelectric Efficiency of a Topological Nano-Junction. Entropy 2018, 20, 366.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top