Hentschel, Martina, Ullmo, Denis and Baranger, Harold U. (2005) Fermi-Edge Singularities in the Mesoscopic X-Ray Edge Problem. Phys. Rev. Lett. 93 (17, 4), p. 176807.
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Abstract
We study the x-ray edge problem for a chaotic quantum dot or nanoparticle displaying mesoscopic fluctuations. In the bulk, x-ray physics is known to produce Fermi-edge singularities—deviations from the naively expected photoabsorption cross section in the form of a peaked or rounded edge. For a coherent system with chaotic dynamics, we find substantial changes; in particular, a photoabsorption ...
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| Item type: | Article | ||||
|---|---|---|---|---|---|
| Date: | 22 October 2005 | ||||
| Institutions: | Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group Milena Grifoni | ||||
| Identification Number: |
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| Keywords: | XANES, Fermi level, quantum dots, nanoparticles, chaos, fluctuations, two-dimensional electron gas | ||||
| Dewey Decimal Classification: | 500 Science > 530 Physics | ||||
| Status: | Published | ||||
| Refereed: | Unknown | ||||
| Created at the University of Regensburg: | Unknown | ||||
| Item ID: | 9463 |
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