Proximity effect and p-wave superconductivity in s-wave superconductor/helimagnet heterostructures

G. A. Bobkov; A. V. Kornev; A. M. Bobkov; I. V. Bobkova

doi:10.1103/pmg9-sqyd

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Proximity effect and p-wave superconductivity in s-wave superconductor/helimagnet heterostructures

G. A. Bobkov, A. V. Kornev, A. M. Bobkov, I. V. Bobkova

DOI 10.1103/pmg9-sqyd · Physical Review B

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Abstract

It is known that in contrast to homogeneous ferromagnetism, helical magnetism is compatible with superconductivity and has only a weak suppressive effect on superconducting critical temperature. Despite this fact, it induces p-wave triplet superconducting correlations in homogeneous superconducting systems with intrinsic helical magnetism. The combination of these two facts indicates a high potential for the application of such systems in dissipationless spintronics. For this reason, we investigate the proximity effect in atomically thin superconductor/helical (conical) magnet heterostructures (SC/HM). It is shown that in SC/HM heterostructures, the strength of the proximity effect and, in particular, the amplitude of p-wave triplet superconductivity and the degree of superconductivity suppression are complex functions of the magnet exchange field and filling factors of the magnet and the superconductor. Furthermore, we demonstrate that p-wave correlations ensure transport spin supercurrent flow in the SC/HM heterostructure with conical magnets, and we unveil the physical relationship between the transport spin supercurrent, the degree of magnet conicity, and the internal structure of p-wave correlations in momentum space.

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Formula	Reported Tc (K)	Pressure (GPa)	Type
HoMo6S8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
ErRh4B4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
TmNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
TaS2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown