Heat transport across the interface between normal metal and d-wave superconductor

Author

Devyatov, I.A. ; Kupriyanov, M.Yu. ; Golubov, A.A. ; Kuzmin, L. ; Willander, M.

Author_Institution

Inst. of Nucl. Phys., Moscow State Univ., Russia

Volume

9

Issue

2

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

3870

Lastpage

3873

Abstract

Heat conductance and heat current across normal metal/d-wave superconductor (NID) interface are calculated in the framework of quasiclassical equations. The calculations are performed for different values of boundary transparencies and crystal axis orientation. It is shown that in contrast to N/s-wave boundary the heat conductance of transparent (D=1) NID interface is considerably larger and has a nonactivated form. Electronic heat current across NID structures is also calculated for different interface models taking into account the midgap states and the possibility of generating a gapless s-wave state in the vicinity of rough NID interface. It is shown that NID junctions cannot compete with analogous NIS devices in microrefrigerating and bolometer applications.

Keywords

BCS theory; high-temperature superconductors; proximity effect (superconductivity); superconducting energy gap; thermal conductivity; thermoelectricity; Andreev states; BCS theory; HTSC electrode; bolometer applications; boundary transparencies; crystal axis orientation; diffusive interface; gapless s-wave state; heat conductance; heat current; heat transport; interface models; microrefrigerating; midgap states; normal metal/d-wave superconductor interface; proximity effect; quasiclassical equations; rough interface; transparent interface; Electrodes; Electrons; Heat transfer; High temperature superconductors; Josephson junctions; Refrigeration; Superconducting devices; Superconducting photodetectors; Thermoelectricity; Tin;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.783872

Filename

783872