Role of Interfacial Orbital Hybridization in Spin-Orbit-Torque Generation in Pt -Based Heterostructures

2020 ◽  
Vol 14 (5) ◽  
Author(s):  
Xinyu Shu ◽  
Jing Zhou ◽  
Liang Liu ◽  
Weinan Lin ◽  
Chenghang Zhou ◽  
...  
Keyword(s):  
Spin Orbit ◽  
Orbital Hybridization ◽  
Torque Generation

scholarly journals Spin-orbit torque manipulated by fine-tuning of oxygen-induced orbital hybridization

2019 ◽  
Vol 5 (11) ◽  
pp. eaax4278 ◽  
Author(s):  
Yuito Kageyama ◽  
Yuya Tazaki ◽  
Hongyu An ◽  
Takashi Harumoto ◽  
Tenghua Gao ◽  
...  
Keyword(s):  
Nonvolatile Memory ◽  
Scale Effects ◽  
Perpendicular Magnetic Anisotropy ◽  
Atomic Scale ◽  
Fine Tuning ◽  
Spin Orbit ◽  
Spintronic Devices ◽  
Fast Switching ◽  
Orbital Hybridization

Current-induced spin-orbit torques provide an effective way to manipulate magnetization in spintronic devices, promising for fast switching applications in nonvolatile memory and logic units. Recent studies have revealed that the spin-orbit torque is strongly altered by the oxidation of heterostructures with broken inversion symmetry. Although this finding opens a new field of metal-oxide spin-orbitronics, the role of the oxidation in the spin-orbit physics is still unclear. Here, we demonstrate a marked enhancement of the spin-orbit torque induced by a fine-tuning of oxygen-induced modification of orbital hybridization. This is evidenced by a concomitant enhancement of the interface spin-orbit torque, interface spin loss, and interface perpendicular magnetic anisotropy within a narrow range of the oxidation level of metallic heterostructures. This result reveals the crucial role of the atomic-scale effects in the generation of the spin-orbit torques, opening the door to atomic-level engineering of the spin-orbit physics.

scholarly journals Dzyaloshinskii–Moriya interaction in noncentrosymmetric superlattices

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Woo Seung Ham ◽  
Abdul-Muizz Pradipto ◽  
Kay Yakushiji ◽  
Kwangsu Kim ◽  
Sonny H. Rhim ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Degrees Of Freedom ◽  
Orbit Coupling ◽  
Inversion Symmetry ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Band Formation ◽  
Research Activities ◽  
Moriya Interaction

AbstractDzyaloshinskii–Moriya interaction (DMI) is considered as one of the most important energies for specific chiral textures such as magnetic skyrmions. The keys of generating DMI are the absence of structural inversion symmetry and exchange energy with spin–orbit coupling. Therefore, a vast majority of research activities about DMI are mainly limited to heavy metal/ferromagnet bilayer systems, only focusing on their interfaces. Here, we report an asymmetric band formation in a superlattices (SL) which arises from inversion symmetry breaking in stacking order of atomic layers, implying the role of bulk-like contribution. Such bulk DMI is more than 300% larger than simple sum of interfacial contribution. Moreover, the asymmetric band is largely affected by strong spin–orbit coupling, showing crucial role of a heavy metal even in the non-interfacial origin of DMI. Our work provides more degrees of freedom to design chiral magnets for spintronics applications.

Key role of spin–orbit effects in the relaxation of CO2(010) by thermal collisions with O(3Pj)

2007 ◽  
Vol 105 (9) ◽  
pp. 1171-1181 ◽  
Author(s):  
M. P. De Lara-Castells ◽  
Marta I. Hernández ◽  
G. Delgado-barrio ◽  
P. Villarreal ◽  
M. López-puertas
Keyword(s):  
Spin Orbit

The role of the spin-orbit coupling strength in the MO effects of magnetic insulators

2001 ◽  
Vol 37 (4) ◽  
pp. 2411-2413 ◽  
Author(s):  
You Xu ◽  
Jiehui Yang ◽  
Xijuan Zhang ◽  
Fang Zhang ◽  
M. Guillot
Keyword(s):  
Coupling Strength ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Magnetic Insulators
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