Results 41 to 50 of about 1,441 (235)

Transmission-Line Model for Materials with Spin-Momentum Locking [PDF]

open access: yesPhysical Review Applied, 2018
We provide a transmission line representation for channels exhibiting spin-momentum locking (SML) which can be used for both time-dependent and steady-state transport analysis on a wide variety of materials with spin-orbit coupling such as topological insulators, heavy metals, oxide interfaces, and narrow bandgap semiconductors.
Sayed, Shehrin   +2 more
openaire   +2 more sources

Spin photonics: from transverse spin to photonic skyrmions

open access: yesNanophotonics, 2021
Spin angular momentum associated with circular polarization is a fundamental and important aspect of photons both in classical and quantum optics. The interaction of this optical spin with matter and structures results in many intriguing optical effects ...
Shi Peng, Du Luping, Yuan Xiaocong
doaj   +1 more source

Spin–momentum locking induced non-local voltage in topological insulator nanowire [PDF]

open access: yesNanoscale, 2020
Unique spin–momentum locking in topological surface states of Sb2Te3 nanowires exhibits an unusual symmetry in non-local voltage signal.
Jen-Ru Chen   +3 more
openaire   +3 more sources

Anisotropic magnetoresistance in topological insulator Bi1.5Sb0.5Te1.8Se1.2/CoFe heterostructures

open access: yesAIP Advances, 2012
Topological insulator is composed of an insulating bulk state and time reversal symmetry protected two-dimensional surface states. One of the characteristics of the surface states is the locking between electron momentum and spin orientation.
B. Xia   +6 more
doaj   +1 more source

Non-Reciprocal Amplification of Light Using Cold Atoms Coupled to an Optical Nanofiber [PDF]

open access: yesEPJ Web of Conferences, 2022
Optical nanofibers realized as the waist of tapered silica fibers can be used to trap and optically interface laser-cooled atoms. Building on this system, we experimentally show a novel scheme for the nonreciprocal Raman amplification of light.
Pucher Sebastian   +4 more
doaj   +1 more source

Janus and Huygens Dipoles: Near-Field Directionality Beyond Spin-Momentum Locking [PDF]

open access: yesPhysical Review Letters, 2018
Unidirectional scattering from circularly polarized dipoles has been demonstrated in near-field optics, where the quantum spin-Hall effect of light translates into spin-momentum locking. By considering the whole electromagnetic field, instead of its spin component alone, near-field directionality can be achieved beyond spin-momentum locking.
Picardi, Michela   +2 more
openaire   +4 more sources

Observation of spin-momentum locked surface states in amorphous Bi2Se3 [PDF]

open access: yesNature Materials, 2023
Crystalline symmetries have played a central role in the identification of topological materials. The use of symmetry indicators and band representations have enabled a classification scheme for crystalline topological materials, leading to large scale topological materials discovery.
Paul Corbae   +14 more
openaire   +5 more sources

Fermi level dependent spin pumping from a magnetic insulator into a topological insulator

open access: yesPhysical Review Research, 2019
Topological spintronics aims to exploit the spin-momentum locking in the helical surface states of topological insulators for spin-orbit torque devices. We address a fundamental question that still remains unresolved in this context: Does the topological
Hailong Wang   +9 more
doaj   +1 more source

Strong spin-dephasing in a topological insulator-paramagnet heterostructure

open access: yesAPL Materials, 2020
The interface between magnetic materials and topological insulators can drive the formation of exotic phases of matter and enable functionality through the manipulation of the strong spin polarized transport.
Jason Lapano   +11 more
doaj   +1 more source

Dipolar spin waves in uniaxial easy-axis antiferromagnets: A natural topological nodal-line semimetal

open access: yesPhysical Review Research, 2020
The existence of magnetostatic surface spin waves in ferromagnets, known as the Damon-Eshbach mode, was recently demonstrated to originate from the topology of the dipole-dipole interaction.
Jie Liu, Lin Wang, Ka Shen
doaj   +1 more source

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