Zobrazeno 1 - 10
of 508
pro vyhledávání: '"de Sousa, D."'
We demonstrate that two-dimensional Kramers-Weyl fermions can be engineered in spin-orbit coupled twisted bilayers, where the chiral structure of these moir\'e systems breaks all mirror symmetries, confining Kramers-Weyl fermions to high-symmetry poi
Externí odkaz:
http://arxiv.org/abs/2409.06806
In this work, we derive a generalized constitutive relation describing the current response to external electromagnetic fields in electrically biased quantum materials. While our semiclassical Boltzmann approach reveals the existence of electro-optic
Externí odkaz:
http://arxiv.org/abs/2408.02827
Advances in material fabrication techniques and growth methods have opened up a new chapter for twistronics, in the form of twisted freestanding three-dimensional material membranes. Through first-principles calculations based on density functional t
Externí odkaz:
http://arxiv.org/abs/2405.06132
We propose a spin Hall effect (SHE) enhancement mechanism due to Kramers-Weyl point (KWP) alignment in chiral topological semimetals with high Chern numbers (CNs). Through model Hamiltonian calculations, we identify enhancements in the intrinsic spin
Externí odkaz:
http://arxiv.org/abs/2307.08160
The lack of certain crystalline symmetries in strong spin-orbit-coupled non-magnetic materials allows for the existence of uncoventional spin Hall responses, with electrically generated transverse spin currents possessing collinear flow and spin dire
Externí odkaz:
http://arxiv.org/abs/2210.16344
Monolayer transition metal dichalcogenides are promising materials for spintronics due to their robust spin-valley locked valence states, enabling efficient charge-to-spin conversion via valley Hall effect with non-equilibrium spins possessing long s
Externí odkaz:
http://arxiv.org/abs/2206.09998
Autor:
Lee, Seungjun, de Sousa, D. J. P., Kwon, Young-Kyun, de Juan, Fernando, Chi, Zhendong, Casanova, Fèlix, Low, Tony
Publikováno v:
Phys. Rev. B 106, (2022) 165420
We investigate the twist angle dependence of spin-orbit coupling (SOC) proximity effects and charge-to-spin conversion (CSC) in graphene/WSe$_2$ heterostructures from first principles. The CSC is shown to strongly depend on the twist angle, with both
Externí odkaz:
http://arxiv.org/abs/2206.09478
Publikováno v:
Phys. Rev. B 103, 241103 (2021)
We study the current-induced torques in asymmetric magnetic tunnel junctions containing a conventional ferromagnet and a magnetic Weyl semimetal contact. The Weyl semimetal hosts chiral bulk states and topologically protected Fermi arc surface states
Externí odkaz:
http://arxiv.org/abs/2103.05512
Publikováno v:
Phys. Rev. B 104, 041401 (2021)
We investigate the tunneling magnetoresistance in magnetic tunnel junctions (MTJs) comprised of Weyl semimetal contacts. We show that chirality-magnetization locking leads to a gigantic tunneling magnetoresistance ratio, an effect that does not rely
Externí odkaz:
http://arxiv.org/abs/2103.05501
In this paper, we study the domain wall motion induced by vertical current flow in asymmetric magnetic tunnel junctions. The domain wall motion in the free layer is mainly dictated by the current-induced field-like torque acting on it. We show that a
Externí odkaz:
http://arxiv.org/abs/2101.01581