Phase-controllable nonlocal spin polarization in proximitized nanowires

X. P. Zhang; V. N. Golovach; F. Giazotto; F. S. Bergeret

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Phase-controllable nonlocal spin polarization in proximitized nanowires

机译：近纳米线中的相控制非局部旋转极化

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We study the magnetic and superconducting proximity effects in a semiconducting nanowire (NW) attached to superconducting leads and a ferromagnetic insulator (FI). We show that a sizable equilibrium spin polarization arises in the NW due to the interplay between the superconducting correlations and the exchange field in the FI. The resulting magnetization has a nonlocal contribution that spreads in the NW over the superconducting coherence length and is opposite in sign to the local spin polarization induced by the magnetic proximity effect in the normal state. For a Josephson-junction setup, we show that the nonlocal magnetization can be controlled by the superconducting phase bias across the junction. Our findings are relevant for the implementation of Majorana bound states in state-of-the-art hybrid structures.

机译：我们研究了附着在超导引线和铁磁绝缘体（FI）附着的半导体纳米线（NW）中的磁性和超导接近效应。我们表明，由于超导相关性与FI中的交换场之间的相互作用，因此在NW中产生了相当大的平衡偏振。所得到的磁化具有非识别贡献，其在超导相干长度上方的NW中扩散，并且在符号中与正常状态下的磁性接近效应引起的局部自旋极化相反。对于Josephse-Junction设置，我们表明，非局部磁化可以通过连接交叉点的超导相偏置来控制。我们的研究结果与最先进的混合结构中的Majorana绑定国家的实施有关。

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来源
《Physical review》 |2020年第18期|180502.1-180502.6|共6页
作者
X. P. Zhang; V. N. Golovach; F. Giazotto; F. S. Bergeret;
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Donostia International Physics Center (DIPC) Manuel de Lardizabal 4 E-20018 San Sebastian Spain Centro de Fisica de Materiales (CFM-MPC) Centro Mixto CS/C-UPV/EHU E-20018 Donostia-San Sebastian Basque Country Spain;

Donostia International Physics Center (DIPC) Manuel de Lardizabal 4 E-20018 San Sebastian Spain Centro de Fisica de Materiales (CFM-MPC) Centro Mixto CS/C-UPV/EHU E-20018 Donostia-San Sebastian Basque Country Spain IKERBASQUE Basque Foundation for Science E-48011 Bilbao Spain;

NEST Istituto Nanoscienze-CNR and Scuola Normale Superiore 1-56127 Pisa Italy;

Centro de Fisica de Materiales (CFM-MPC) Centro Mixto CS/C-UPV/EHU E-20018 Donostia-San Sebastian Basque Country Spain Donostia International Physics Center (DIPC) Manuel de Lardizabal 4 E-20018 San Sebastian Spain;

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1. Phase-controllable nonlocal spin polarization in proximitized nanowires [J] . Zhang X. P., Golovach V. N., Giazotto F., Physical review, B . 2020,第18期

机译：近纳米线中的相控制非局部旋转极化
2. Theory of Kondo suppression of spin polarization in nonlocal spin valves [J] . K.-W. Kim, L. OBrien, P. A. Crowell, Physical Review. B, Condensed Matter . 2017,第10期

机译：Kondo抑制非局部自旋阀中自旋极化的理论
3. Theory of Kondo suppression of spin polarization in nonlocal spin valves [J] . K.-W. Kim, L. O’Brien, P. A. Crowel, Physical Review. B, Condensed Matter . 2017,第9a10CD期

机译：非絮凝阀旋转偏振的Kondo抑制理论
4. Engineering of hole-spin polarization in nanowires [C] . Ulrich Zuelicke, Dan Csontos Conference on Device and Process Technologies for Microelectronics, MEMS, and Photonics . 2008

机译：纳米线孔自旋极化的工程
5. SPIN POLARIZATION AND BEYOND THE RANDOM PHASE APPROXIMATION IN NONLOCAL DENSITY FUNCTIONAL THEORY. [D] . HU, CHONG DER. 1985

机译：非局部密度泛函理论中的自旋极化和随机相逼近。
6. Theory of Kondo suppression of spin polarization in nonlocal spin valves [O] . K.-W. Kim, L. O’Brien, P. A. Crowell, -1

机译：Kondo抑制非局部自旋阀中自旋极化的理论
7. Phase-controllable nonlocal spin polarization in proximitized nanowires [O] . X. P. Zhang, V. N. Golovach, F. Giazotto, 2020

机译：近纳米线中的相控制非局部旋转极化
8. THE ISOSPIN- AND ISOSPIN-SPIN-POLARIZATIONS OF INTERACTING HADRONS [R] . D. B. Ion, A. C. Mihul 1974

机译：相互作用的HaDRONs的IsOspIN和IsOspIN-spIN-pOLaRIsaTIONs

Phase-controllable nonlocal spin polarization in proximitized nanowires

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