Fe-doped beta-Ga2O3(010) photocathode at 300 K produces ultracold 6 meV MTE electron emission from dopant states superimposed on phonon-mediated emission from an upper conduction band.
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Measurements on single-crystal metal photocathodes reveal an additional near-threshold emission process attributed to momentum-resonant Umklapp scattering, with a first-principles model matching observed quantum efficiency and mean transverse energy.
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Intrinsic emittance properties of an Fe-doped Beta-Ga2O3(010) photocathode: Ultracold electron emission at 300K and the polaron self-energy
Fe-doped beta-Ga2O3(010) photocathode at 300 K produces ultracold 6 meV MTE electron emission from dopant states superimposed on phonon-mediated emission from an upper conduction band.
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Evidence for Umklapp electron scattering emission from metal photocathodes
Measurements on single-crystal metal photocathodes reveal an additional near-threshold emission process attributed to momentum-resonant Umklapp scattering, with a first-principles model matching observed quantum efficiency and mean transverse energy.