Thermoelectric transport through Majorana bound states and violation of Wiedemann-Franz law

Ramos-Andrade, J. P.; Ávalos-Ovando, Óscar; Orellana, P. A.; Ulloa, Sergio E.

doi:10.1103/physrevb.94.155436

Cited by 37 publications

(47 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This attracted the interest of the researchers working in the domain of quantum information and transport, as systems with MFs [17][18][19] can be in principle used as building blocks for the next generation of nanodevices, [20,21] including current switches [20] and quantum memory elements [21]. At the same time, similar systems were proposed as thermoelectric nanodevices [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Tuning of heat and charge transport by Majorana fermions

Ricco

Dessotti

Shelykh

et al. 2018

Sci Rep

View full text Add to dashboard Cite

We investigate theoretically thermal and electrical conductances for the system consisting of a quantum dot (QD) connected both to a pair of Majorana fermions residing at the edges of a Kitaev wire and two metallic leads. We demonstrate that both quantities reveal pronounced resonances, whose positions can be controlled by tuning of an asymmetry of the couplings of the QD and a pair of MFs. Similar behavior is revealed for the thermopower, Wiedemann-Franz law and dimensionless thermoelectric figure of merit. The considered geometry can thus be used as a tuner of heat and charge transport assisted by MFs.

show abstract

Section: Introductionmentioning

confidence: 99%

Tuning of heat and charge transport by Majorana fermions

Ricco

Dessotti

Shelykh

et al. 2018

Sci Rep

View full text Add to dashboard Cite

show abstract

“…where φ AB is the total Aharonov-Bohm phase. The dynamical phases are encoded in (20) via the matrix…”

Section: Scattering In a Majorana-dirac Contactmentioning

confidence: 99%

Thermoelectric transport in junctions of Majorana and Dirac channels

et al. 2017

View full text Add to dashboard Cite

We investigate the thermoelectric current and heat conductance in a chiral Josephson contact on a surface of a 3D topological insulator, covered with superconducting and magnetic insulator films. The contact consists of two junctions of Majorana and Dirac channels next to two superconductors. Geometric asymmetry results in a supercurrent without a phase bias. The interference of Dirac fermions causes oscillations of the electric and heat currents with an unconventional period 2Φ0 = h/e as functions of the Aharonov-Bohm flux. Due to the gapless character of Majorana modes, there is no threshold for the thermoelectric effect and the current-flux relationship is non-sinusoidal. Depending on the magnetic flux, the direction of the electric current can be both from the hot to cold lead and vice versa.

show abstract

“…Setups where nonequilibrium is simultaneously induced by a bias voltage V and a temperature difference ∆T uncover even more unique physics of Majorana zero modes which manifests, e.g., in a violation of the Wiedemann-Franz law [28] and in thermoelectric fluctuations having a high degree of universality. Indeed, in nanoscopic Majorana setups not only linear but also nonlinear zero frequency thermoelectric noise turns out to be universal [29] while finite frequency thermoelectric quantum noise reveals universal symmetry and dynamic resonances with universal maxima [30].…”

Section: Introductionmentioning

confidence: 99%

Dual Majorana universality in thermally induced nonequilibrium

Smirnov

2020

Phys. Rev. B

View full text Add to dashboard Cite

We demonstrate that nonequilibrium nanoscopic systems with Majorana zero modes admit special kind of universality which cannot be classified as of strictly transport or strictly thermodynamic nature. To reveal such kind of Majorana universality we explore purely thermal nonequilibrium states of a quantum dot whose low-energy degrees of freedom are governed by Majorana zero modes. Specifically, the quantum dot is coupled to a topological superconductor, supporting Majorana zero modes, as well as to two normal metallic contacts with the same chemical potentials but different temperatures. It is shown that the Majorana universality in this setup is dual: it is stored inside both the response of the electric current, excited by exclusively the temperature difference, and the quantum dot compressibility. The latter is defined as the derivative of the quantum dot particle number with respect to the chemical potential and forms a universal Majorana ratio with a proper derivative of the electric current that flows in nonequilibrium states of purely thermal nature. arXiv:2003.05424v2 [cond-mat.mes-hall]

show abstract

Thermoelectric transport through Majorana bound states and violation of Wiedemann-Franz law

Cited by 37 publications

References 38 publications

Tuning of heat and charge transport by Majorana fermions

Tuning of heat and charge transport by Majorana fermions

Thermoelectric transport in junctions of Majorana and Dirac channels

Dual Majorana universality in thermally induced nonequilibrium

Contact Info

Product

Resources

About