Angle-resolved photoemission spectroscopy is an experimental technique used in condensed matter physics to probe the allowed energies and momenta of the electrons in a material, usually a crystalline
A view through the window of an ultrahigh vacuum chamber for angle-resolved photoemission spectroscopy. The crystal holder with integrated e-beam heating is attached to a xyz+theta manipulator on top, and by a silver braid to a cryocooler on the bottom. The lens of the electron analyzer and UV source capillary are visible on the right.
Fermi surface
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In condensed matter physics, the Fermi surface is the surface in reciprocal space which separates occupied electron states from unoccupied electron states at zero temperature. The shape of the Fermi s
Angle-resolved photoemission spectroscopy
…measuring the kinetic energy and emission angle distributions of the emitted photoelectrons, the technique can map the electronic band structure and Fermi surfaces. ARPES is best suited for the study of one- or two-dimensional materials. It has been used by physicists to investigate high-temperature superconductors…
Fig. 1: Fermi surface and electron momentum density of copper in the reduced zone schema measured with 2D ACAR.
Fig. 3: Fermi surface of BSCCO measured by ARPES. The experimental data shown as an intensity plot in yellow-red-black scale. Green dashed rectangle represents the Brillouin zone of the CuO2 plane of BSCCO.