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Related papers: Thermopower and thermophase in a $d$-wave supercon…

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We present analytic and numerical results for the thermoelectric effect in unconventional superconductors with a dilute random distribution of impurities, each scattering isotropically but with a phase shift intermediate between the Born…

Superconductivity · Physics 2009-11-10 Tomas Lofwander , Mikael Fogelstrom

We argue that spin-sensitive quasiparticle scattering may generate electron-hole imbalance in superconducting structures, such as, e.g., superconducting-normal hybrids with spin-active interfaces. We elucidate a transparent physical…

Superconductivity · Physics 2014-10-03 Mikhail S. Kalenkov , Andrei D. Zaikin

Employing quasiclassical theory of superconductivity combined with Keldysh technique we investigate large thermoelectric effect in multiterminal ballistic normal-superconducting (NS) hybrid structures. We argue that this effect is caused by…

Superconductivity · Physics 2017-02-01 Mikhail S. Kalenkov , Andrei D. Zaikin

We discuss the nonlinear current of an interacting quantum dot coupled to normal and superconducting reservoirs with applied voltage and temperature differences. Due to the particle-hole symmetry introduced by the superconducting lead, the…

Mesoscale and Nanoscale Physics · Physics 2015-03-24 Sun-Yong Hwang , Rosa Lopez , David Sanchez

We examine the thermopower Q of a mesoscopic normal-metal (N) wire in contact to superconducting (S) segments and show that even with electron-hole symmetry, Q may become finite due to the presence of supercurrents. Moreover, we show how…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Pauli Virtanen , Tero T. Heikkila

Attaching a superconductor in good contact with a normal metal makes rise to a proximity effect where the superconducting correlations leak into the normal metal. An additional contact close to the first one makes it possible to carry a…

Superconductivity · Physics 2010-06-25 Pauli Virtanen , Tero T. Heikkilä

The thermoelectric coefficient $\eta(T)$ in unconventional superconductors is enhanced below $T_c$ by intermediate strength impurity scattering that is intrinsically particle-hole asymmetric. We compute $\eta(T)$ for a strong-coupling…

Superconductivity · Physics 2009-11-11 Mikael Fogelstrom , Tomas Lofwander

Anomalously large thermopower of mesoscopic normal-metal/superconductor interferometers has been investigated by Chandrasekhar et al. It was shown that, depending on the geometry of the interferometer, the thermopower is either symmetric or…

Mesoscale and Nanoscale Physics · Physics 2009-02-26 M. Titov

We demonstrate that thermoelectric currents in superconducting bilayers with a spin-active interface are controlled by the two competing processes. On one hand, spin-sensitive quasiparticle scattering at such interface generates…

Superconductivity · Physics 2015-02-16 Mikhail S. Kalenkov , Andrei D. Zaikin

Tunneling conductance spectra between a normal metal / d-wave superconductor junction under the presence of bulk impurities in the superconductor are studied. The quasiclassical theory has been applied to calculate the spatial variation of…

Superconductivity · Physics 2009-11-07 Y. Tanaka , Y. Tanuma , S. Kashiwaya

We predict parametrically strong enhancement of the thermoelectric effect in metallic bilayers consisting of two superconductors separated by a spin-active interface. The physical mechanism for such an enhancement is directly related to…

Superconductivity · Physics 2015-04-03 Mikhail S. Kalenkov , Andrei D. Zaikin

We review some recent advances in studies of phase-coherent thermoelectric effects in superconducting hybrid structures such as, e.g., Andreev interferometers. We elucidate a number of mechanisms of electron-hole symmetry breaking in such…

Superconductivity · Physics 2022-02-18 Mikhail S. Kalenkov , Andrei D. Zaikin

We examine the thermopower Q of a mesoscopic normal-metal (N) wire in contact to superconducting (S) segments and show that even with electron-hole symmetry, Q may become finite due to the presence of supercurrents. Moreover, we show how…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Pauli Virtanen , Tero T. Heikkila

We study the nonequilibrium transport properties of a normal-superconductor-normal structure, focussing on the effect of adding an impurity in the superconducting region. Current conservation requires the superfluid velocity to be nonzero,…

Condensed Matter · Physics 2009-10-28 J. Sanchez-Canizares , F. Sols

The thermoemf in bipolar semiconductors is calculated. It is shown that it is necessary to take into account the nonequilibrium distribution of electron and hole concentrations (Fermi quasilevels of the electrons and holes). We find that…

Condensed Matter · Physics 2009-10-28 Yu. G. Gurevich , O. Yu. Titov , G. N. Logvinov , O. I. Lyubimov

Not so long ago, thermoelectricity in superconductors was believed to be possible only by breaking explicitly the particle-hole symmetry. Recently, it has been theoretically predicted that a superconducting tunnel junction can develop…

In light of the evidence that charge order coexists with d-wave superconductivity in the underdoped cuprate superconductors, we investigate the manner in which such charge order will influence the quasiparticle excitations of the system…

Superconductivity · Physics 2009-08-26 Adam C. Durst , Subir Sachdev

We study the effect of dissipation on quantum phase fluctuations in d-wave superconductors. Dissipation, arising from a nonzero low frequency optical conductivity which has been measured in experiments below $T_c$, has two effects: (1) a…

Superconductivity · Physics 2009-10-31 L. Benfatto , S. Caprara , C. Castellani , A. Paramekanti , M. Randeria

Andreev interferometers, normal metal wires coupled to superconducting loops, display phase coherent changes as the magnetic flux through the superconducting loops is altered. Properties such as the electronic and thermal conductance of…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 P. Cadden-Zimansky , Z. Jiang , V. Chandrasekhar

Motivated by recent pump-probe experiments we consider the processes by which "hot" quasiparticles produced near the antinodes of a d-wave superconductor can relax. We show that in a large region of momentum space processes which break…

Superconductivity · Physics 2009-11-10 P. C. Howell , A. Rosch , P. J. Hirschfeld
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