APS -APS March Meeting 2017 - Event - Hysteretic magneto-transport in superconductor/ferromagnet hybrids with variable domain structure

Xavier Palermo; Victor Rouco; Adrian Balan; Constance Moreau-Luchaire; Sophie Collin; William Legrand; Karim Bouzehouane; Jacobo Santamaria; Anke Sander; Vincent Cros; Javier E. Villegas

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APS -APS March Meeting 2017 - Event - Hysteretic magneto-transport in superconductor/ferromagnet hybrids with variable domain structure

机译：APS -APS 2017年3月会议-活动-具有可变域结构的超导体/铁磁体混合体中的磁滞磁传输

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We report magneto-transport experiments in hybrid stacks consisting of an amorphous Mo$_{mathrm{1-x}}$Si$_{mathrm{x}}$ superconducting film (S) with a perpendicular magnetic anisotropy ferromagnetic (F) multilayer (either Co/Pt or Ir/Co/Pt) on top. Unlike in plain superconducting films, the magnetoresistance shows a strong hysteresis which is observed during the F layer magnetization reversal and closely follows its dynamics. This effect is strongly dependent of the size and morphology of the domain structure, which results in qualitatively and quantitatively different behavior in Co/Pt and Ir/Co/Pt. The microscopic mechanisms that could explain our results will be reviewed, including domain-wall superconductivity and stray-field to vortex coupling.

机译：我们报告了由非晶态Mo $ _ {mathrm {1-x}} $ Si $ _ {mathrm {x}} $超导膜（S）和垂直磁各向异性铁磁（F）多层组成的混合堆中的磁传输实验（Co / Pt或Ir / Co / Pt）位于顶部。与普通的超导薄膜不同，磁阻表现出很强的磁滞现象，这种磁滞现象在F层磁化反转过程中观察到，并紧随其动力学。这种效应在很大程度上取决于域结构的大小和形态，从而导致Co / Pt和Ir / Co / Pt在质量和数量上的行为不同。将审查可以解释我们结果的微观机制，包括畴壁超导性和杂散场至涡旋耦合。

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《Bulletin of the American Physical Society》 |2017年第4期|共页
作者
Xavier Palermo; Victor Rouco; Adrian Balan; Constance Moreau-Luchaire; Sophie Collin; William Legrand; Karim Bouzehouane; Jacobo Santamaria; Anke Sander; Vincent Cros; Javier E. Villegas;
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机译：铁磁超导体和杂交S / F结构中的畴壁超导
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机译：混合超导体-铁磁体结构中的畴壁超导性

APS -APS March Meeting 2017 - Event - Hysteretic magneto-transport in superconductor/ferromagnet hybrids with variable domain structure

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