Angle-resolved photoemission from Au(112)

Fermi surface of Sr2RuO4 from angle resolved photoemission

We investigated the low-energy electronic structure of Sr2RuO4 by angle-resolved photoemission spectroscopy (ARPES) focusing, in particular, on the controversial issues of the Fermi surface (FS) topology and of the extended van Hove singularity (evHs). A detailed study of temperature and photon energy dependence demonstrates the surface-state nature of the electronic band responsible for the ev...

Angle-resolved photoemission from cuprates with static stripes

Twenty five years after discovery of high-temperature superconductivity (HTSC) in La2 xBaxCuO4 (LBCO), the HTSC continues to pose some of the biggest challenges in materials science. Cuprates are fundamentally different from conventional superconductors in that the metallic conductivity and superconductivity are induced by doping carriers into an antiferromagnetically ordered correlated insulat...

Angle resolved resonant photoemission in transition metals

Angle-resolved photoemission study of Sr2RuO4.

We present high-resolution ~HR! angle-resolved photoemission spectroscopy ~ARPES! measurements of the noncuprate layered perovskite superconductor Sr2RuO4 . ARPES spectra of the whole valence-band region obtained along two high-symmetry directions in the Brillouin zone show clear dispersion, generally similar to that of a band calculation. However, HRARPES measurements taken in the vicinity of ...

Electronic structure of MgB2 from angle-resolved photoemission spectroscopy.

The first angle-resolved photoemission spectroscopy results from MgB2 single crystals are reported. Along the GammaK and GammaM directions, we observed three distinct dispersive features approaching the Fermi energy. These can be assigned to the theoretically predicted sigma (B 2p(x,y)) and pi (B 2p(z)) bands. In addition, a small parabolic-like band is detected around the Gamma point, which ca...