منابع مشابه
Giant Nernst effect due to fluctuating cooper pairs in superconductors.
A theory of the fluctuation-induced Nernst effect is developed for a two-dimensional superconductor in a perpendicular magnetic field. First, we derive a simple phenomenological formula for the Nernst coefficient, which naturally explains the giant Nernst signal due to fluctuating Cooper pairs. The latter signal is shown to be large even far from the transition and may exceed by orders of magni...
متن کاملMagnetic Nernst effect
The thermodynamics of irreversible processes in continuous media predicts the existence of a magnetic Nernst effect that results from a magnetic analog to the Seebeck effect in a ferromagnet and magnetophoresis occurring in a paramagnetic electrode in contact with the ferromagnet. Thus, a voltage that has DC and AC components is expected across a Pt electrode as a response to the inhomogeneous ...
متن کاملQuantum Nernst Effect
It is theoretically predicted that the Nernst coefficient is strongly suppressed and the thermal conductance is quantized in the quantum Hall regime of the twodimensional electron gas. The Nernst effect is the induction of a thermomagnetic electromotive force in the y direction under a temperature bias in the x direction and a magnetic field in the z direction. The quantum nature of the Nernst ...
متن کاملComment on "Giant Nernst effect due to fluctuating Cooper pairs in superconductors".
A comment is made on a letter (Phys. Rev. Lett. 102, 067001) and a paper (Phys. Rev. B 83, 020506) regarding the correct expression of the thermal current vertex for Cooper pairs. In the Ginzburg-Landau (GL) theory [1, 2] the electronic current ~ J and the thermal current ~ J carried by fluctuating Cooper pairs (T > Tc) are given as ~ J = 2e ~ J, (1) and ~ J = ω ~ J, (2) in the limit of vanishi...
متن کاملGiant Nernst-Ettingshausen oscillations in semiclassically strong magnetic fields.
We consider the Nernst-Ettingshausen (NE) effect in the presence of semiclassically strong magnetic fields for a quasi-two-dimensional system with a parabolic or linear dispersion of carriers. We show that the occurring giant oscillations of the NE coefficient are coherent with the recent experimental observation in graphene, graphite, and bismuth. In the 2D case we find the exact shape of thes...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2004
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.92.217002