scholarly journals Quantum transport in Weyl semimetal thin films in the presence of spin-orbit coupled impurities

2017 ◽  
Vol 96 (4) ◽  
Author(s):  
Weizhe Edward Liu ◽  
Ewelina M. Hankiewicz ◽  
Dimitrie Culcer
Keyword(s):  
Thin Films ◽  
Quantum Transport ◽  
Spin Orbit ◽  
Weyl Semimetal

scholarly journals Magnetization switching induced by spin–orbit torque from Co2MnGa magnetic Weyl semimetal thin films

2021 ◽  
Vol 118 (6) ◽  
pp. 062402
Author(s):  
Ke Tang ◽  
Zhenchao Wen ◽  
Yong-Chang Lau ◽  
Hiroaki Sukegawa ◽  
Takeshi Seki ◽  
...  
Keyword(s):  
Thin Films ◽  
Spin Orbit ◽  
Magnetization Switching ◽  
Weyl Semimetal

scholarly journals First-Principles Quantum Transport Modeling of Spin-Transfer and Spin-Orbit Torques in Magnetic Multilayers

2018 ◽  
pp. 1-35 ◽  
Author(s):  
Branislav K. Nikolić ◽  
Kapildeb Dolui ◽  
Marko D. Petrović ◽  
Petr Plecháč ◽  
Troels Markussen ◽  
...  
Keyword(s):  
Quantum Transport ◽  
First Principles ◽  
Magnetic Multilayers ◽  
Spin Transfer ◽  
Transport Modeling ◽  
Spin Orbit

scholarly journals Low-Energy Optical Conductivity of TaP: Comparison of Theory and Experiment

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 567
Author(s):  
Alexander Yaresko ◽  
Artem V. Pronin
Keyword(s):  
Experimental Data ◽  
Optical Conductivity ◽  
Low Energy ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Natural Explanation ◽  
Weyl Semimetal ◽  
Unintentional Doping ◽  
Mott Formula ◽  
Theory And Experiment

The ab-plane optical conductivity of the Weyl semimetal TaP is calculated from the band structure and compared to the experimental data. The overall agreement between theory and experiment is found to be best when the Fermi level is slightly (20 to 60 meV) shifted upwards in the calculations. This confirms a small unintentional doping of TaP, reported earlier, and allows a natural explanation of the strong low-energy (50 meV) peak seen in the experimental ab-plane optical conductivity: this peak originates from transitions between the almost parallel non-degenerate electronic bands split by spin-orbit coupling. The temperature evolution of the peak can be reasonably well reproduce by calculations using an analog of the Mott formula.

scholarly journals Spin-orbit interaction enhancement in permalloy thin films by Pt doping

2016 ◽  
Vol 93 (1) ◽  
Author(s):  
A. Hrabec ◽  
F. J. T. Gonçalves ◽  
C. S. Spencer ◽  
E. Arenholz ◽  
A. T. N'Diaye ◽  
...  
Keyword(s):  
Thin Films ◽  
Orbit Interaction ◽  
Spin Orbit ◽  
Spin Orbit Interaction ◽  
Permalloy Thin Films

scholarly journals Magnetic and Electronic Properties of Weyl Semimetal Co2MnGa Thin Films

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 251
Author(s):  
Peter Swekis ◽  
Aleksandr S. Sukhanov ◽  
Yi-Cheng Chen ◽  
Andrei Gloskovskii ◽  
Gerhard H. Fecher ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Electronic Properties ◽  
Photoelectron Spectroscopy ◽  
Magnetic Moments ◽  
Field Orientation ◽  
Weyl Semimetal ◽  
Uniform Magnetization ◽  
Experimental Findings ◽  
High Degree

Magnetic Weyl semimetals are newly discovered quantum materials with the potential for use in spintronic applications. Of particular interest is the cubic Heusler compound Co2MnGa due to its inherent magnetic and topological properties. This work presents the structural, magnetic and electronic properties of magnetron co-sputtered Co2MnGa thin films, with thicknesses ranging from 10 to 80 nm. Polarized neutron reflectometry confirmed a uniform magnetization through the films. Hard x-ray photoelectron spectroscopy revealed a high degree of spin polarization and localized (itinerant) character of the Mn d (Co d) valence electrons and accompanying magnetic moments. Further, broadband and field orientation-dependent ferromagnetic resonance measurements indicated a relation between the thickness-dependent structural and magnetic properties. The increase of the tensile strain-induced tetragonal distortion in the thinner films was reflected in an increase of the cubic anisotropy term and a decrease of the perpendicular uniaxial term. The lattice distortion led to a reduction of the Gilbert damping parameter and the thickness-dependent film quality affected the inhomogeneous linewidth broadening. These experimental findings will enrich the understanding of the electronic and magnetic properties of magnetic Weyl semimetal thin films.

Substrate‐Dependent Spin–Orbit Coupling in Hybrid Perovskite Thin Films

2019 ◽  
Vol 29 (35) ◽  
pp. 1904046 ◽  
Author(s):  
Qi Zhang ◽  
Haomiao Yu ◽  
Fenggui Zhao ◽  
Liying Pei ◽  
Jinpeng Li ◽  
...  
Keyword(s):  
Thin Films ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Hybrid Perovskite

scholarly journals Films of rhombohedral graphite as two-dimensional topological semimetals

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Sergey Slizovskiy ◽  
Edward McCann ◽  
Mikito Koshino ◽  
Vladimir I. Fal’ko
Keyword(s):  
Thin Films ◽  
Anomalous Hall Effect ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Berry Curvature ◽  
Electrostatic Gating ◽  
Topological Semimetals ◽  
Intrinsic Magnetic Moment

AbstractTopologically non-trivial states appear in a number of materials ranging from spin-orbit-coupling driven topological insulators to graphene. In multivalley conductors, such as mono- and bilayer graphene, despite a zero total Chern number for the entire Brillouin zone, Berry curvature with different signs concentrated in different valleys can affect the material’s transport characteristics. Here we consider thin films of rhombohedral graphite, which appear to retain truly two-dimensional properties up to tens of layers of thickness and host two-dimensional electron states with a large Berry curvature, accompanied by a giant intrinsic magnetic moment carried by electrons. The size of Berry curvature and magnetization in the vicinity of each valley can be controlled by electrostatic gating leading to a tuneable anomalous Hall effect and a peculiar structure of the two-dimensional Landau level spectrum.

Induced Ising spin-orbit interaction in metallic thin films on monolayer WSe2

2019 ◽  
Vol 99 (12) ◽  
Author(s):  
Yingying Wu ◽  
James Jun He ◽  
Tianyi Han ◽  
Shuigang Xu ◽  
Zefei Wu ◽  
...  
Keyword(s):  
Thin Films ◽  
Orbit Interaction ◽  
Metallic Thin Films ◽  
Spin Orbit ◽  
Spin Orbit Interaction ◽  
Ising Spin
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