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Tunable transport in magnetically coupled MoGe/Permalloy hybrids
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View: Figures


Image of FIG. 1.
FIG. 1.

Magnetization of a thick Permalloy film grown over bilayer on a silicon wafer at for magnetic field applied parallel (a) and perpendicular (b) to the surface of the film. Magnetic force microscope images of an area of the Permalloy [(c) and (d)] shows ordered stripe domain pattern. The period of the stripe domains is around . After application of in-plane magnetic field in different direction to the original stripe direction, the magnetic stripe domains change the direction (d) and remain aligned when there is no external magnetic field present. The scan area is .

Image of FIG. 2.
FIG. 2.

Temperature dependence of the resistivity of MoGe in the MoGe/Permalloy bilayer. The magnetic field is applied perpendicular to the film. Magnetic stripe domains are oriented parallel (a) and perpendicular (b) to the superconducting current. The external magnetic fields range from with step of (color code online: —black, —red, —green, —blue repeat periodically every ).

Image of FIG. 3.
FIG. 3.

Superconducting phase diagram of the MoGe/Permalloy bilayer for two magnetic stripe domain orientations. The diagram was obtained from curves shown in Fig. 2 by defining the critical temperature as , where is the normal state resistivity at . Inset on the lower left shows a magnetic force microscope image of the magnetic bubble domain structure forming at perpendicular applied field of .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Tunable transport in magnetically coupled MoGe/Permalloy hybrids