Pure bulk orbital and spin photocurrent in two-dimensional ferroelectric materials
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DOI: 10.1038/s41524-021-00531-7
Abstract: We elucidate a bias-free light-induced orbital and spin current through nonlinear response theory, which generalizes the well-known bulk photovoltaic effect in centrosymmetric broken materials from charge to the spin and orbital degrees of freedom. We… read more here.
Keywords: photocurrent; bulk orbital; two dimensional; spin ... See more keywords
Coupling of charge, lattice, orbital, and spin degrees of freedom in charge density waves in 1 T -TaS 2
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.97.041413
Abstract: Two-dimensional layered transition-metal-dichalcogenide (TMDC) materials often exhibit exotic quantum phases due to the delicate coupling and competitions of charge, lattice, orbital, and spin degrees of freedom. Surprisingly, we here present, based on first-principles density-functional theory… read more here.
Keywords: charge; lattice orbital; degrees freedom; charge lattice ... See more keywords
Direct observation of the orbital spin Kondo effect in gallium arsenide quantum dots
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DOI: 10.1103/physrevb.97.085307
Abstract: Besides the spin Kondo effect, other degrees of freedom can give rise to the pseudospin Kondo effect. We report a direct observation of the orbital spin Kondo effect in a series-coupled gallium arsenide (GaAs) double… read more here.
Keywords: effect; kondo effect; orbital spin; spin kondo ... See more keywords
Orbital-to-spin angular momentum conversion employing local helicity
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.075155
Abstract: Spin-orbit interactions in optics traditionally describe an influence of the polarization degree of freedom of light on its spatial properties. The most prominent example is the generation of a spin-dependent optical vortex upon focusing or… read more here.
Keywords: orbital spin; momentum; angular momentum; helicity ... See more keywords