2002
DOI: 10.1103/physrevb.66.020505
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Re-entrant superconductivity in the superconductor/ferromagnet V/Fe layered system

Abstract: We study the superconducting properties of a series of Fe/V/Fe trilayers with variable thickness of the Fe layer and constant thickness of the V layer. For an optimized combination of thicknesses and structural quality of the thin films we observe a re-entrant behavior of the superconducting state when plotting the superconducting transition temperature T c as a function of the Fe thickness d Fe . With increasing d Fe , T c drops sharply up to d Fe Ӎ8 Å, then the superconductivity disappears, and it restores a… Show more

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Cited by 112 publications
(82 citation statements)
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“…Note, that critical temperature has reentrant behavior. The same type of T d c f ( ) dependence was firstly predicted by us [8,9], and it was observed in the Fe/V/Fe trilayer not long ago [17].…”
Section: Discussion Of the Phase Diagrams Of Layered F/s Systemssupporting
confidence: 56%
See 1 more Smart Citation
“…Note, that critical temperature has reentrant behavior. The same type of T d c f ( ) dependence was firstly predicted by us [8,9], and it was observed in the Fe/V/Fe trilayer not long ago [17].…”
Section: Discussion Of the Phase Diagrams Of Layered F/s Systemssupporting
confidence: 56%
“…The reentrant character of superconductivity that we have predicted has been recently observed experimentally in the Fe/V/Fe trilayer [17].…”
Section: Introductionmentioning
confidence: 57%
“…5,6 In this state, the real part of the order parameter penetrates the ferromagnet a distance on the order of the coherence length ξ F and oscillates due to dephasing by the exchange energy of the ferromagnet. This leads to the oscillations of the superconducting transition temperature (T c ) as a function of ferromagnet thickness [7][8][9][10][11] and π phase shift in S/F junctions. 12,13 Furthermore, recent measurements in S/F structures 11,[14][15][16] have provided evidence for triplet pairing in the ferromagnet induced by noncollinear magnetizations of the F layers.…”
Section: Introductionmentioning
confidence: 99%
“…The exchange field introduces a momentum mismatch between the spin-up and spin-down electrons that form a singlet pair, and this results in a weak oscillatory dependence superimposed on the decrease of T C with increasing thickness of the F layer [2][3][4] . In an F-S-F spin valve, the reversal of one F layer modifies the spatial properties of the decaying oscillation, resulting in a spin-switch effect in which the T C is greater when the F layer moments are antiparallel (AP) than when they are parallel (P) [5][6][7] .…”
mentioning
confidence: 99%