scholarly journals Theory of tunneling spectroscopy of normal metal/ferromagnet/spin-triplet superconductor junctions

2018 ◽  
Vol 98 (1) ◽  
Author(s):  
L. A. B. Olde Olthof ◽  
S.-I. Suzuki ◽  
A. A. Golubov ◽  
M. Kunieda ◽  
S. Yonezawa ◽  
...  
Keyword(s):  
Tunneling Spectroscopy ◽  
Normal Metal ◽  
Spin Triplet

scholarly journals Spin-triplet supercurrents in Josephson junctions containing strong ferromagnetic materials

2018 ◽  
Vol 376 (2125) ◽  
pp. 20150150 ◽  
Author(s):  
Norman O. Birge
Keyword(s):  
Proximity Effect ◽  
Josephson Junctions ◽  
Bound States ◽  
Ferromagnetic Material ◽  
Ferromagnetic Materials ◽  
Normal Metal ◽  
Pair Correlations ◽  
Spin Singlet ◽  
Triplet Pair ◽  
Spin Triplet

The proximity effect between a superconducting material and a non-superconducting normal metal can extend over distances of the order of micrometres at sufficiently low temperatures. If the normal metal is replaced by a ferromagnetic material, the spatial extent of the proximity effect drops precipitously due to the exchange splitting between the majority and minority spin bands in the ferromagnet. In 2001, several theorists predicted that spin-triplet pair correlations could be induced in proximity systems involving multiple ferromagnetic materials (or multiple domains in one material) with non-collinear magnetizations. Such spin-triplet pair correlations should extend deep into the ferromagnet, producing a long-range proximity effect. In this paper, we review our experimental work in this area, which has focused primarily on Josephson junctions containing strong ferromagnetic materials. We show that Josephson junctions containing particular combinations of strong ferromagnetic materials can carry spin-triplet supercurrent over distances of at least several tens of nanometres, whereas spin-singlet supercurrent in similar samples decays over a length scale of about 1 nm. We also mention important work by other groups; however, this article is not intended to be a review of the whole field. This article is part of the theme issue ‘Andreev bound states’.

Line shape in normal metal tunneling spectroscopy

1989 ◽  
Vol 93 (15) ◽  
pp. 5717-5721 ◽  
Author(s):  
K. W. Hipps ◽  
Susan Leenov Peter
Keyword(s):  
Line Shape ◽  
Tunneling Spectroscopy ◽  
Normal Metal

Tunneling spectroscopy in the Charge-Density Wave conductor NbSe3

2004 ◽  
Vol 114 ◽  
pp. 135-136 ◽  
Author(s):  
E. Slot ◽  
K. O'Neill ◽  
H. S.J. van der Zant ◽  
R. E. Thorne
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Tunneling Spectroscopy

ANALYSIS OF PROXIMITY EFFECTS BETWEEN SPIN SINGLET AND SPIN TRIPLET SUPERCONDUCTORS

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-481-C6-483 ◽  
Author(s):  
K. Scharnberg ◽  
D. Fay ◽  
N. Schopohl
Keyword(s):  
Proximity Effects ◽  
Spin Singlet ◽  
Spin Triplet

Tunneling spectroscopy of quasi-two-dimensional plasmons

2001 ◽  
Vol 171 (12) ◽  
pp. 1368
Author(s):  
V.A. Volkov ◽  
E.E. Takhtamirov ◽  
D.Yu. Ivanov ◽  
Yu.V. Dubrovskii ◽  
L. Eaves ◽  
...  
Keyword(s):  
Tunneling Spectroscopy ◽  
Two Dimensional

Scanning-tunneling spectroscopy on conjugated polymer films

2003 ◽  
Vol 771 ◽  
Author(s):  
M. Kemerink ◽  
S.F. Alvarado ◽  
P.M. Koenraad ◽  
R.A.J. Janssen ◽  
H.W.M. Salemink ◽  
...  
Keyword(s):  
Polymer Films ◽  
Conjugated Polymer ◽  
Three Dimensional ◽  
Field Enhancement ◽  
Direct Consequence ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Band Alignment ◽  
Scanning Tunneling ◽  
Order Of Magnitude

AbstractScanning-tunneling spectroscopy experiments have been performed on conjugated polymer films and have been compared to a three-dimensional numerical model for charge injection and transport. It is found that field enhancement near the tip apex leads to significant changes in the injected current, which can amount to more than an order of magnitude, and can even change the polarity of the dominant charge carrier. As a direct consequence, the single-particle band gap and band alignment of the organic material can be directly obtained from tip height-voltage (z-V) curves, provided that the tip has a sufficiently sharp apex.

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