A superconducting/magnetic hybrid rectifier based on Fe single-crystal nanocentres: Role of magnetic and geometric asymmetries

Gomez A.; Gonzalez E.M.; Iglesias M.; Sanchez N.; Palomares F.J.; Cebollada F.; Gonzalez J.M.; Vicent J.L.

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A superconducting/magnetic hybrid rectifier based on Fe single-crystal nanocentres: Role of magnetic and geometric asymmetries

机译：基于Fe单晶纳米中心的超导/磁混合整流器：磁和几何不对称的作用

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Vortex lattice motion driven by alternating forces on asymmetric pinning potentials generates a net flow of vortices. This rectifier (ratchet) effect is studied in hybrid samples fabricated with arrays of Fe single-crystal nanotriangles embedded in Nb films. In these samples two different asymmetric potentials generate the ratchet effect: (i) potentials with geometric asymmetry and (ii) potentials with magnetic asymmetry. The asymmetry of the geometric potential cannot be manipulated, but the asymmetry of the magnetic potential can be tailored. In geometric ratchet interstitial vortices play a crucial role and they permit tuning the output voltage polarity. In magnetic ratchet the output voltage amplitude can be controlled by tailoring the magnetic stray field configurations due to different magnetic remanent states of the Fe single-crystal nanostructures. These configurations are modified by changing the direction of the saturating applied field and also by using different orientations of the Fe magnetocrystalline easy axes within the triangles. When both mechanisms coexist, the geometric potential governs the rectifier effect behaviour.

机译：由不对称钉扎电势上的交变力驱动的涡旋晶格运动会产生净涡流。在用嵌入Nb薄膜中的Fe单晶纳米三角形阵列制成的混合样品中研究了这种整流器（棘轮）效应。在这些样本中，两个不同的不对称电势产生棘轮效应：（i）具有几何不对称性的电势和（ii）具有磁不对称性的电势。几何电位的不对称性无法操纵，但是可以调整磁势的不对称性。在几何棘轮中，间隙涡流起着至关重要的作用，它们可以调节输出电压的极性。在磁性棘轮中，由于Fe单晶纳米结构的不同剩磁状态，可以通过调整杂散磁场配置来控制输出电压幅度。通过改变饱和施加场的方向以及通过使用三角形内的铁磁晶易轴的不同取向来修改这些构造。当两种机制共存时，几何势将控制整流器的行为。

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《Journal of Physics, D. Applied Physics: A Europhysics Journal》 |2013年第9期|共8页
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Gomez A.; Gonzalez E.M.; Iglesias M.; Sanchez N.; Palomares F.J.; Cebollada F.; Gonzalez J.M.; Vicent J.L.;
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1. A superconducting/magnetic hybrid rectifier based on Fe single-crystal nanocentres: Role of magnetic and geometric asymmetries [J] . Gomez A., Gonzalez E.M., Iglesias M., Journal of Physics, D. Applied Physics: A Europhysics Journal . 2013,第9期

机译：基于Fe单晶纳米中心的超导/磁混合整流器：磁和几何不对称的作用
2. The role of the stray field on superconducting properties of hybrid ferromagnetic/superconducting heterostructures [J] . A. Paschoa, L. Gonzalez, V. P. Nascimento, Journal of Applied Physics . 2020,第4期

机译：杂散场对杂交铁磁性/超导异质结构超导性能的作用
3. Magnetic memory based on La_(0.7)Ca_(0.3)MnO_3/Yba_2Cu_30_7/La_(0.7)Ca_(0.3)MnO_3 ferromagnet/superconductor hybrid structures [J] . N. M. Nemes, C. Visani, C. Leon, Applied Physicsletters . 2010,第3期

机译：基于La_（0.7）Ca_（0.3）MnO_3 / Yba_2Cu_30_7 / La_（0.7）Ca_（0.3）MnO_3铁磁体/超导体混合结构的磁存储
4. Dynamical Magnetic Tesponse of Single-Crystal CeRu/sub 2/ in the Peak Effect Region of The Superconducting Mixed State [C] . Watkins, D.B., Metlushko, . 1998

机译：超导混合态峰效应区单晶CeRu / sub 2 /的动态磁响应
5. THE EFFECT OF UNIAXIAL STRESS ON THE MAGNETIC FIELD INDUCED HELIMAGNETIC - FERROMAGNETIC PHASE TRANSITION IN SINGLE-CRYSTAL DYSPROSIUM [D] . BENNINGFIELD, L. V., JR. -1

机译：单轴应力对单晶中磁场感应的铁磁相变的影响
6. Antiferroic electronic structure in the nonmagnetic superconducting state of the iron-based superconductors [O] . Takahiro Shimojima, Walid Malaeb, Asuka Nakamura, 2017

机译：铁基超导体在非磁性超导状态下的反铁电子结构
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8. Effect of Strong Magnetic Fields on Superconducting Transition of Single-Crystal NbSe2. [R] . Leupold, H. A., Rothwarf, F., Winter, J. J., 1974

机译：强磁场对单晶Nbse2超导跃迁的影响。

A superconducting/magnetic hybrid rectifier based on Fe single-crystal nanocentres: Role of magnetic and geometric asymmetries

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