scholarly journals Density of states anomalies in hybrid superconductor-ferromagnet-normal metal structures

JETP Letters ◽  
2005 ◽  
Vol 81 (4) ◽  
pp. 180-184 ◽  
Author(s):  
A. A. Golubov ◽  
M. Yu. Kupriyanov ◽  
M. Siegel
Keyword(s):  
Density Of States ◽  
Normal Metal ◽  
Metal Structures

scholarly journals Thermoelectric current in a graphene Cooper pair splitter

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Z. B. Tan ◽  
A. Laitinen ◽  
N. S. Kirsanov ◽  
A. Galda ◽  
V. M. Vinokur ◽  
...  
Keyword(s):  
Cooper Pair ◽  
Theoretical Description ◽  
Seebeck Effect ◽  
Normal Metal ◽  
Electric Voltage ◽  
Power Generators ◽  
Metal Structures ◽  
Fundamental Phenomenon ◽  
Non Local ◽  
Cooper Pair Splitting

AbstractGeneration of electric voltage in a conductor by applying a temperature gradient is a fundamental phenomenon called the Seebeck effect. This effect and its inverse is widely exploited in diverse applications ranging from thermoelectric power generators to temperature sensing. Recently, a possibility of thermoelectricity arising from the interplay of the non-local Cooper pair splitting and the elastic co-tunneling in the hybrid normal metal-superconductor-normal metal structures was predicted. Here, we report the observation of the non-local Seebeck effect in a graphene-based Cooper pair splitting device comprising two quantum dots connected to an aluminum superconductor and present a theoretical description of this phenomenon. The observed non-local Seebeck effect offers an efficient tool for producing entangled electrons.

scholarly journals Nonlinear thermoelectric effects in high-field superconductor-ferromagnet tunnel junctions

2016 ◽  
Vol 7 ◽  
pp. 1579-1585 ◽  
Author(s):  
Stefan Kolenda ◽  
Peter Machon ◽  
Detlef Beckmann ◽  
Wolfgang Belzig
Keyword(s):  
Heat Transport ◽  
Normal Metal ◽  
Hybrid Structures ◽  
Metal Nanostructures ◽  
Thermal Excitation ◽  
Thermoelectric Effects ◽  
Electron Hole ◽  
Metal Structures ◽  
Dc Bias ◽  
Microscopic Origin

Background: Thermoelectric effects result from the coupling of charge and heat transport and can be used for thermometry, cooling and harvesting of thermal energy. The microscopic origin of thermoelectric effects is a broken electron–hole symmetry, which is usually quite small in metal structures. In addition, thermoelectric effects decrease towards low temperatures, which usually makes them vanishingly small in metal nanostructures in the sub-Kelvin regime. Results: We report on a combined experimental and theoretical investigation of thermoelectric effects in superconductor/ferromagnet hybrid structures. We investigate the dependence of thermoelectric currents on the thermal excitation, as well as on the presence of a dc bias voltage across the junction. Conclusion: Large thermoelectric effects are observed in superconductor/ferromagnet and superconductor/normal-metal hybrid structures. The spin-independent signals observed under finite voltage bias are shown to be reciprocal to the physics of superconductor/normal-metal microrefrigerators. The spin-dependent thermoelectric signals in the linear regime are due to the coupling of spin and heat transport, and can be used to design more efficient refrigerators.

Pair potential and density of states in proximity-contact superconducting–normal-metal double layers

1993 ◽  
Vol 47 (17) ◽  
pp. 11263-11274 ◽  
Author(s):  
Jun’ichiro Hara ◽  
Masami Ashida ◽  
Katsuhiko Nagai
Keyword(s):  
Density Of States ◽  
Pair Potential ◽  
Normal Metal ◽  
Double Layers

A Mo/Au Bilayer Transition Edge Sensor Modified with Normal Metal Structures

2013 ◽  
Vol 176 (3-4) ◽  
pp. 337-343 ◽  
Author(s):  
G. Wang ◽  
V. Yefremenko ◽  
C. L. Chang ◽  
J. Mehl ◽  
V. Novosad ◽  
...  
Keyword(s):  
Transition Edge Sensor ◽  
Normal Metal ◽  
Metal Structures ◽  
Transition Edge

scholarly journals Nonlinear resonance of superconductor/normal metal structures to microwaves

2010 ◽  
Vol 82 (2) ◽  
Author(s):  
E. Kandelaki ◽  
A. F. Volkov ◽  
K. B. Efetov ◽  
V. T. Petrashov
Keyword(s):  
Nonlinear Resonance ◽  
Normal Metal ◽  
Metal Structures

scholarly journals Subgap Density of States in Superconductor-Normal Metal Bilayers in the Cooper Limit

2004 ◽  
Vol 93 (25) ◽  
Author(s):  
Zhenyi Long ◽  
M. D. Stewart ◽  
Taejoon Kouh ◽  
James M. Valles
Keyword(s):  
Density Of States ◽  
Normal Metal ◽  
Metal Bilayers

scholarly journals Proximity effect in granular superconductor–normal metal structures

2005 ◽  
Vol 71 (6) ◽  
Author(s):  
I. Sternfeld ◽  
V. Shelukhin ◽  
A. Tsukernik ◽  
M. Karpovski ◽  
A. Gerber ◽  
...  
Keyword(s):  
Proximity Effect ◽  
Normal Metal ◽  
Metal Structures ◽  
Granular Superconductor
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