Introducing the 'orbiton'

Free electrons moving through space are fundamental and indivisible: they are not built up of smaller particles, in contrast with protons and neutrons. However, within materials, interactions among electrons and atoms can give rise to quasiparticles, quantum states in which groups of electrons behave as new, particle-like excitations. Physicists have now successfully created quasiparticles that split the electron's orbital characteristics from its spin. To accomplish this, Justine Schlappa et al. studied a special material in which electrons are confined to one-dimensional interactions at low temperatures, so that electron-electron interactions are dominant. Using resonant inelastic X-ray scattering (RIXS) at the Swiss Light Source facility, they determined that the electron orbital states propagated through the material independently of the spin. Read the comments on this post

Introducing the 'orbiton'

New quasiparticle emerges from 1D lattice

Wed 18 Apr 12 from Physics World

Electrons doing the splits

Observations of a 'single' electron apparently splitting into two independent entities -- so-called quasi-particles -- are reported in this week’s Nature.

Wed 18 Apr 12 from Phys.org

Electron's split personality seen

Researchers see electrons turning into a never-before-seen "quasi-particle" that carries the electron's properties around in a material.

Wed 18 Apr 12 from BBC News

Not-quite-so elementary, my dear electron

Fundamental particle 'splits' into quasiparticles, including the new 'orbiton'.

Wed 18 Apr 12 from Nature News

Physicists manage to break electrons into three quasiparticles

]]>Electrons are generally known as "fundamental particles," meaning they're not made up of anything: you can't smash an electron to bits, because there are no bits to smash it into. Under the ...

Thu 19 Apr 12 from Dvice

Splitting up the indivisible: quasiparticles separate an electron's spin, charge, and orbit

Free electrons moving through space are fundamental and indivisible: they are not built up of smaller particles, in contrast with protons and neutrons. However, within materials, interactions ...

Wed 18 Apr 12 from Ars Technica

Physicists observe the splitting of an electron inside a solid

Using high-energy X-rays on a solid copper-oxide compound, researchers in Europe report witnessing the decay of an electron into two separate parts, each carrying a particular property of the ...

Sun 22 Apr 12 from R&D Mag

Physicists observe the splitting of an electron inside a solid, Wed 18 Apr 12 from ScienceDaily

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