Radial Band Structure of Electrons in Liquid Metals

Details Radial Band Structure of Electrons in Liquid Metals Radial Band Structure of Electrons in Liquid Metals

2011-08-19

arxiv.org/abs/1108.4019v1

Phys. Rev. Lett. 107, 136402 (2011)

Physics

Condensed Matter

Materials Science

4 pages, 4 figures, accepted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.107.136402

The electronic band structure of a liquid metal was investigated by measuring precisely the evolution of angle-resolved photoelectron spectra during the melting of a Pb monolayer on a Si(111) surface. We found that the liquid monolayer exhibits a free-electron-like band and it undergoes a coherent radial scattering, imposed by the radial correlation of constituent atoms, to form a characteristic secondary hole band. This unique double radial bands and their gradual evolution during melting can be quantitatively reproduced, including detailed spectral intensity profiles, with our radial scattering model based on a theoretical prediction of 1962. Our result establishes the radial band structure as a key concept for describing the nature of electrons in strongly disordered states of matter.

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