Van Der Waals Heterostructures with Spin‐Orbit Coupling

Rossi, Enrico; Triola, Christopher

doi:10.1002/andp.201900344

Cited by 21 publications

(18 citation statements)

References 214 publications

(506 reference statements)

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“…[98,102,103,226,227] Moreover, in these magnetically ordered conductors, excitations of the magnetic lattice can interact with the conduction electrons in the system, providing additional and unexplored aspects of pure spin current transport and spin-to-charge conversion in these systems. Another important direction are 2D materials for charge-to-spin current conversion, [228][229][230][231][232] where nowadays with the possibility of tuning the properties of the materials via stacking 2D materials on top of each other provides a vast parameter space to obtain efficient pure spin current generation in such 2D systems. In addition, topological insulators with their spinpolarized edge state provide novel functionalities in charge-tospin current conversion processes.…”

Section: Discussionmentioning

confidence: 99%

All‐Electrical Magnon Transport Experiments in Magnetically Ordered Insulators

Althammer

2021

Physica Rapid Research Ltrs

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Angular momentum transport is one of the cornerstones of spintronics. Spin angular momentum is not only transported by mobile charge carriers but also by the quantized excitations of the magnetic lattice in magnetically ordered systems. In this regard, magnetically ordered insulators (MOIs) provide a platform for magnon spin transport experiments without additional contributions from spin currents carried by mobile electrons. In combination with charge‐to‐spin current conversion processes in conductors with finite spin–orbit coupling, it is possible to realize all‐electrical magnon transport schemes in thin‐film heterostructures. Herein, an insight into such experiments and recent breakthroughs achieved is provided. Special attention is given to charge‐current‐based manipulation via an adjacent normal metal of magnon transport in MOIs in terms of spin‐transfer torque. Moreover, the influence of two magnon modes with opposite spin in antiferromagnetic insulators on all‐electrical magnon transport experiments is discussed.

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Section: Discussionmentioning

confidence: 99%

All‐Electrical Magnon Transport Experiments in Magnetically Ordered Insulators

Althammer

2021

Physica Rapid Research Ltrs

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“…[66] investigated the spin and pseudo-spin texture of AB stacked bilayer graphene focusing on its D 3 point group symmetry. Recent studies suggest that the resonance between the bands of the graphene and the substrate with strong SOC strength such as topological insulators and transition metal dichalcogenides can enhance the SOC in the graphene [62,[67][68][69][70][71][72]. Enhancement of SOC can be as high as two-order of magnitude so that it can lift the spin degeneracy and induce the topological phase transition [71].…”

Section: Discussionmentioning

confidence: 99%

Chirality-induced spin texture switching in twisted bilayer graphene

Yananose,

Cantele,

Lucignano

et al. 2021

Preprint

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The interlayer van der Waals interaction in twisted bilayer graphene (tBLG) induces both inplane and out-of-plane atomic displacements exhibiting complex patterns that depend on the twist angle. In particular, for small twist angles, within each graphene layer, the relaxations give rise to a vortex displacement pattern which is known to affect the dispersion of the flat band. Here, we focus on yet another structural property, the chirality of the twisted bilayer. We perform first-principles calculations based on density functional theory, starting from the ground state optimized structures of tBLG at different twist angles. We study the interplay between twist chirality and the atomic relaxation patterns. Furthermore, we investigated the spin textures around the K points of the Brillouin zone, showing that alternating vortex-like patterns are correlated to the chirality of tBLG. Interestingly, the sense of rotation of each vortex is inverted by changing the chirality in tBLG while the different twist angles also modify the spin textures. We discuss the origin of the spin textures by calculating the layer weights and using plot regression models.

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“…This contribution also addresses various experimental methods for probing oddfrequency pairing in multi-band systems. E. Rossi and C. Triola [3] provide a feature article that reviews the recent work on van der Waals (vdW) systems with strong spinorbit coupling. Focusing on a selection of vdW heterostructures and using a general effective model to describe the low energy electronic degrees of freedom, the authors examine the interesting electronic proper-ties that can arise in vdW systems formed by graphene and a topological insulator.…”

Section: Doi: 101002/andp202000037mentioning

confidence: 99%

Dynamic Quantum Matter

et al. 2020

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We are witnessing rapid developments in the field of quantum materials with the focus on some of the most profound concepts in condensed matter, including entangled orders, quantum coherence, and quantum topology. Quantum correlations in these materials naturally reveal themselves in the time domain, since their temporal evolution is governed by the full Hamiltonian, which contains multiple interactions. Therefore, nonequilibrium quantum dynamics emerges as a design principle to create desired quantum materials and functionalities. We see a growing focus on dynamics as a way to understand and control the fundamental physical processes that emerge due to quantum coherence of entangled quantum matter. Commensurate with the developments in theory and modeling of quantum materials, we see a rapid rise of new probes for the examination of quantum matter. These new probes include ultra-fast optics, free-electron lasers, and new neutron scattering facilities with capabilities to probe quantum matter at the increasingly short time scale while maintaining high-spatial resolution. Reflecting on recent progress and excitement in the field, we organized a workshop on Dynamic Quantum Matter Dec 10-14, 2018 at the Nordic Institute for Theoretical Physics (NORDITA, https://indico.fysik.su.se/event/6504/). As a result of this conference, we put together a special issue of the Annalen der Physik on "Dynamic Quantum Matter". We summarize the contributions in this volume. This special issue contains a rapid research letter, four feature articles, five original papers, and a perspective on the dynamics of various forms of quantum matter and materials ranging from superconductivity to magnetism, bosonic and fermionic Dirac materials ferro-states in 2D materials.

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Van Der Waals Heterostructures with Spin‐Orbit Coupling

Cited by 21 publications

References 214 publications

All‐Electrical Magnon Transport Experiments in Magnetically Ordered Insulators

All‐Electrical Magnon Transport Experiments in Magnetically Ordered Insulators

Chirality-induced spin texture switching in twisted bilayer graphene

Dynamic Quantum Matter

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