scispace - formally typeset
Search or ask a question
Topic

Spin-½

About: Spin-½ is a research topic. Over the lifetime, 40423 publications have been published within this topic receiving 796639 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, the authors developed the quantization of topological solitons (vortices) in three-dimensional quantum field theory, in terms of the Euclidean region functional integral.
Abstract: We develop the quantization of topological solitons (vortices) in three-dimensional quantum field theory, in terms of the Euclidean region functional integral. We analyze in some detail the vortices of the abelian Higgs model. If a Chern-Simons term is added to the action, the vortices turn out to be “anyons,” i.e. particles with arbitrary real spin and intermediate (Θ) statistics. Localization properties of the interpolating field, scattering theory and spin-statistics connection of anyons are discussed. Such analysis might be relevant in connection with the fractional quantum Hall effect and two-dimensional models of HighTcsuperconductors.

167 citations

Journal ArticleDOI
TL;DR: In this paper, a set of coupled equations of motion for the evaluation of spin dynamics in magnets is introduced, which considers the orientation of the local magnetic moments to be slowly varying relative to their magnitudes.
Abstract: A set of coupled equations of motion for the evaluation of spin dynamics in magnets is introduced. This adiabatic approach considers the orientation of the local magnetic moments to be slowly varying relative to their magnitudes. The method is implemented within the local density approximation and applied to $\ensuremath{\gamma}$-Fe, a frustrated system where we obtain new low energy magnetic configurations.

167 citations

Journal ArticleDOI
TL;DR: Theoretical models of spin liquids are collective phases of quantum matter that have eluded discovery in correlated magnetic materials for over half a century as mentioned in this paper, and they have been studied in a wide range of applications.
Abstract: Spin liquids are collective phases of quantum matter that have eluded discovery in correlated magnetic materials for over half a century. Theoretical models of these enigmatic topological phases ar...

167 citations

Journal ArticleDOI
TL;DR: In this paper, a van de Waals heterostructure of atomically thin graphene and semiconducting MoS2 is proposed to switch the spin current in the channel between ON and OFF states by tuning the spin absorption into the semiconductor with a gate electrode.
Abstract: Future development in spintronic devices will require an advanced control of spin currents, for example by an electric field. Here we demonstrate an approach that differs from previous proposals such as the Datta and Das modulator, and that is based on a van de Waals heterostructure of atomically thin graphene and semiconducting MoS2. Our device combines the superior spin transport properties of graphene with the strong spin–orbit coupling of MoS2 and allows switching of the spin current in the graphene channel between ON and OFF states by tuning the spin absorption into the MoS2 with a gate electrode. Our proposal holds potential for technologically relevant applications such as search engines or pattern recognition circuits, and opens possibilities towards electrical injection of spins into transition metal dichalcogenides and alike materials. By forming heterostructures of different layered two-dimensional materials, functional spintronic devices may be built by exploiting the materials’ different spin-orbit coupling and spin transport properties. Here, the authors demonstrate a spin switch in a gated structure of graphene and MoS2.

167 citations

Journal ArticleDOI
TL;DR: In this paper, the authors report on theoretical and experimental work involving a particular molecular switch, an [FeII(L)2]2+ complex, that utilizes a spin transition (crossover) and demonstrate that within a single molecule this transition can be triggered by charging the ligands.
Abstract: We report on theoretical and experimental work involving a particular molecular switch, an [FeII(L)2]2+ complex, that utilizes a spin transition (“crossover”). The hallmark of this transition is a change of the spin of the metal ion, SFe=0 to SFe=2, at fixed oxidation state of the Fe ion. Combining density functional theory and first principles calculations, we demonstrate that within a single molecule this transition can be triggered by charging the ligands. In this process the total spin of the molecule, combining metal ion and ligands, crosses over from S=0 to S=1. Three-terminal transport through a single molecule shows indications of this transition induced by electric gating. Such an electric field control of the spin transition allows for a local, fast, and direct manipulation of molecular spins, an important prerequisite for molecular spintronics.

167 citations


Network Information
Related Topics (5)
Ground state
70K papers, 1.5M citations
96% related
Phase transition
82.8K papers, 1.6M citations
94% related
Quantum
60K papers, 1.2M citations
92% related
Electron
111.1K papers, 2.1M citations
91% related
Excited state
102.2K papers, 2.2M citations
91% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202234
20212,352
20201,787
20191,748
20181,696
20171,621