Measuring the Debye Energy in Superconductors via two Electron
Photoemission Spectroscopy
Measuring the Debye Energy in Superconductors via two Electron
Photoemission Spectroscopy
We demonstrate theoretically that double angle resolved photoemission spectroscopy (2eARPES) can directly probe the existence of Cooper pairs away from the Fermi surface, and can thus provide insight into the characteristic energy scale around the Fermi surface, the Debye energy, in which electrons are bound into Cooper pairs. To this …