Thermoelectric properties of topological chains coupled to a quantum dot

%\begin{frontmatter}
\title{Thermoelectric properties of topological chains coupled to a quantum dot}

%\author[Jorge]{J. H. Correa}
%\author[Figueira]{M. S. Figueira}
%\address[Jorge,Figueira]{Instituto de F\'{i}sica, Universidade Federal Fluminense, 24210-340, Niter\'oi, RJ, Brasil}
\author{A. C. P. Lima$^{1}$}
\author{R. C. Bento Ribeiro$^{1}$}
\author{J. H. Correa$^{2}$}
\author{M. S. Figueira$^{3}$}
\author{Mucio A. Continentino$^{1}$}

\email[corresponding author:]{[email protected] }
\affiliation{$^{1}$ Centro Brasileiro de Pesquisas F\'{\i}sicas, Rua Dr. Xavier Sigaud, 150, Urca 22290-180, Rio de Janeiro, RJ, Brazil}
\affiliation{$^{2}$Facultad de Ciencias Naturales y Matem\'{a}tica, Universidad Nacional del Callao, Av. Juan Pablo 306, Bellavista 07011, Callao, Per\'{u}}
\affiliation{$^{3}$Instituto de F\'{i}sica, Universidade Federal Fluminense, Av. Litor\^anea s/N, CEP: 24210-340, Niter\'oi, RJ, Brasil}

\begin{abstract}
One-dimensional topological systems can sustain in their extremities zero energy modes that are protected by different kinds of symmetries.
The observation of these modes and how they contribute to the conductance and thermoelectric properties of these systems became one of the
most intensive quests in condensed matter. In this paper we study these properties for different kind of topological chains, which are known to
possess protected modes on their surfaces, namely, sp-chains, Su-Schrieffer-Heeger (SSH) chains and those investigated by Rice-Mele. For the
purpose of studying their thermoelectric properties, we couple these systems to a quantum dot to obtain the conductance, thermoelectric power
and the merit factor as a function of temperature and distance to the topological transition. We show that at the topological transition the zero
temperature conductance through the device is finite and presents a universal value.
\end{abstract}