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Resonance shift effects in apertureless scanning near-field optical microscopy
J. A. Porto, P. Johansson, S. P. Apell +1
We develop a theory to study apertureless scanning near-field optical microscopy which takes into account retardation, higher multipoles of the tip, and the multiple scattering bet…
Light emission from Na/Cu(111) induced by a scanning tunneling microscope
Peter Johansson, Germar Hoffmann, Richard Berndt
Measurements of light emission from a scanning tunneling microscope probing a Na overlayer on the (111) surface of Cu are reported along with results of a model calculation that es…
Two-Electron Photon Emission From Metallic Quantum Wells
Germar Hoffmann, Richard Berndt, Peter Johansson
Unusual emission of visible light is observed in scanning tunneling microscopy of the quantum well system Na on Cu(111). Photons are emitted at energies exceeding the energy of the…