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Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
Published on: June 28, 2018
Tip-enhanced strong-field photoemission
R Bormann1, M Gulde, A Weismann
1Courant Research Center Nano-Spectroscopy and X-Ray Imaging, University of Göttingen, 37077 Göttingen, Germany.
Physical Review Letters
|January 15, 2011
Summary
Nonlinear photoelectron emission from metallic nanotips was studied in the strong-field regime. Researchers identified the transition between multiphoton and optical field emission, confirming a quantum mechanical model.
Area of Science:
- Physics
- Materials Science
- Quantum Mechanics
Background:
- Nonlinear phenomena in materials are crucial for advanced applications.
- Understanding electron emission from nanostructures is key to nanoscale device development.
- Strong-field physics governs electron behavior under intense electromagnetic fields.
Purpose of the Study:
- To investigate nonlinear photoelectron emission from metallic nanotips.
- To identify the transition regime between multiphoton and optical field emission.
- To validate experimental findings with a quantum mechanical model.
Main Methods:
- Experimental exploration of nonlinear photoelectron emission.
- Utilizing strong-field conditions.
- Comparison with theoretical quantum mechanical strong-field models.
Main Results:
- Clear identification of the passage between multiphoton and optical field emission regimes.
- Nonlinear photoelectron emission phenomena observed in metallic nanotips.
- Experimental data aligns with theoretical predictions.
Conclusions:
- The study successfully characterized nonlinear photoelectron emission from metallic nanotips.
- The transition between emission regimes was clearly defined.
- A quantum mechanical strong-field model accurately describes the observed phenomena.
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