Boosting proximity spin–orbit coupling in graphene/WSe2 heterostructures via hydrostatic pressure

  title={Boosting proximity spin–orbit coupling in graphene/WSe2 heterostructures via hydrostatic pressure},
  author={B{\'a}lint F{\"u}l{\"o}p and Albin M{\'a}rffy and Simon Zihlmann and Martin Gmitra and Endre T{\'o}v{\'a}ri and B{\'a}lint Szentp{\'e}teri and M{\'a}t{\'e} Kedves and Kenji Watanabe and Takashi Taniguchi and Jaroslav Fabian and Christian Sch{\"o}nenberger and P{\'e}ter Makk and Szabolcs Csonka},
  journal={npj 2D Materials and Applications},
Van der Waals heterostructures composed of multiple few layer crystals allow the engineering of novel materials with predefined properties. As an example, coupling graphene weakly to materials with large spin–orbit coupling (SOC) allows to engineer a sizeable SOC in graphene via proximity effects. The strength of the proximity effect depends on the overlap of the atomic orbitals, therefore, changing the interlayer distance via hydrostatic pressure can be utilized to enhance the interlayer… 
Twist-Angle Controlled Collinear Edelstein Effect in van der Waals Heterostructures
The generation of spatially homogeneous spin polarization by application of electric current is a fundamental manifestation of symmetry-breaking spin–orbit coupling (SOC) in solid-state systems,
Twist-angle dependent proximity induced spin-orbit coupling in graphene/transition metal dichalcogenide heterostructures
We investigate the proximity-induced spin-orbit coupling in heterostructures of twisted graphene and monolayers of transition-metal dichalcogenides (TMDCs) MoS2, WS2, MoSe2, and WSe2 from first
Tailoring the Band Structure of Twisted Double Bilayer Graphene with Pressure
It is demonstrated that by application of hydrostatic pressure, an additional control of the band structure becomes possible due to the change of tunnel couplings between the layers, suggesting that in finite magnetic field due to pressure a topologically nontrivial band gap opens at the charge neutrality point at zero displacement field.
Proximity effects in graphene on monolayers of transition-metal phosphorus trichalcogenides MPX$_3$
We investigate the electronic band structure of graphene on a series of two-dimensional magnetic transition-metal phosphorus trichalcogenide monolayers, MPX 3 with M= { Mn,Fe,Ni,Co } and X= { S,Se }
Pressure-Tuned Intralayer Exchange in Superlattice-Like MnBi2Te4/(Bi2Te3)n Topological Insulators.
First-principles calculations reveal the essential role of intralayer exchange coupling from lattice compression in determining these magnetic properties in 20% Sb-doped MnBi6Te10.
Spin-orbit–driven ferromagnetism at half moiré filling in magic-angle twisted bilayer graphene
Strong electron correlation and spin-orbit coupling (SOC) can have a profound influence on the electronic properties of materials. We examined their combined influence on a two-dimensional electronic
Spin–orbit coupling in buckled monolayer nitrogene
Buckled monolayer nitrogene has been recently predicted to be stable above the room temperature. The low atomic number of nitrogen atom suggests, that spin–orbit coupling in nitrogene is weak,
Quantum interference tuning of spin-orbit coupling in twisted van der Waals trilayers
Csaba G. Péterfalvi, ∗ Alessandro David, Péter Rakyta, 4 Guido Burkard, † and Andor Kormányos ‡ Department of Physics, University of Konstanz, D-78464 Konstanz, Germany Peter Grünberg Institute –
Edge states in proximitized graphene ribbons and flakes in a perpendicular magnetic field: Emergence of lone pseudohelical pairs and pure spin-current states
We investigate the formation of edge states in graphene ribbons and flakes with proximity induced valley-Zeeman and Rashba spin-orbit couplings in the presence of a perpendicular magnetic field B.
Engineering Proximity Exchange by Twisting: Reversal of Ferromagnetic and Emergence of Antiferromagnetic Dirac Bands in Graphene/Cr_{2}Ge_{2}Te_{6}.
We investigate the twist-angle and gate dependence of the proximity exchange coupling in twisted graphene on monolayer Cr_{2}Ge_{2}Te_{6} from first principles. The proximitized Dirac band


Strong interface-induced spin–orbit interaction in graphene on WS2
This work shows that with a tungsten disulfide (WS2) substrate, the strength of the spin–orbit interaction (SOI) in graphene is very strongly enhanced, which leads to a pronounced low-temperature weak anti-localization effect and a spin-relaxation time two to three orders of magnitude smaller than in graphene on conventional substrates.
Magnetic proximity in a van der Waals heterostructure of magnetic insulator and graphene
Engineering two-dimensional material heterostructures by combining the best of different materials in one ultimate unit can offer a plethora of opportunities in condensed matter physics. Here, in the
Spin Hall Effect and Weak Antilocalization in Graphene/Transition Metal Dichalcogenide Heterostructures.
The graphene/WS2 system is found to maximize spin proximity effects compared to graphene on MoS2, WSe2, or MoSe2 with a crucial role played by disorder, given the disappearance of SHE signals in the presence of strong intervalley scattering.
Pressure dependence of the magic twist angle in graphene superlattices
The recently demonstrated unconventional superconductivity in twisted bilayer graphene (tBLG) opens the possibility for interesting applications of two-dimensional layers that involve correlated
Spin–orbit-driven band inversion in bilayer graphene by the van der Waals proximity effect
By enhancing the spin–orbit coupling in bilayer graphene using the proximity effect in a van der Waals heterostructure, band inversion occurs and an incompressible, gapped phase is produced.
Tunable spin–orbit coupling and symmetry-protected edge states in graphene/WS 2
We demonstrate clear weak anti-localization (WAL) effect arising from induced Rashba spin–orbit coupling (SOC) in WS_2-covered single-layer and bilayer graphene devices. Contrary to the uncovered
Twist-angle dependence of the proximity spin-orbit coupling in graphene on transition-metal dichalcogenides
We theoretically study the proximity spin-orbit coupling in graphene on transition-metal dichalcogenides monolayer stacked with arbitrary twist angles. We find that the relative rotation greatly
Large Proximity-Induced Spin Lifetime Anisotropy in Transition-Metal Dichalcogenide/Graphene Heterostructures
This demonstration of a large spin lifetime anisotropy in TMD/Gr heterostructures, is a direct evidence of induced spin-valley coupling in Gr and provides an accessible route for manipulation of spin dynamics in Gr, interfaced with TMDs.
Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3
Van der Waals heterostructures, which are composed of layered two-dimensional materials, offer a platform to investigate a diverse range of physical phenomena and could be of use in a variety of
Spin-orbit proximity effect in graphene.
It is shown that intrinsic defects in tungsten disulphide play an important role in this proximity effect and that graphene can act as a probe to detect defects in semiconducting surfaces.