dorsal/arxiv
View SchemaComplex--Barrier Tunnelling Times
| Authors | Fabio Raciti, Giovanni Salesi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0203091 |
| URL | https://arxiv.org/abs/quant-ph/0203091 |
| DOI | 10.1051/jp1:1994220 |
| Journal | J. de Phys. I (France) 4 (1994) 1783-1789 |
Abstract
In this paper we calculate the analytic expression of the phase time for the scattering of an electron off a complex square barrier. As is well known the (negative) imaginary part of the potential takes into account, phenomenologically, the absorption. We investigate the so-called Hartman-Fletcher effect, and find that it is suppressed by the presence of a (not negligible) imaginary potential. In fact, when a sufficiently large absorption is present, the asymptotical transmission speed is finite. Actually, the tunnelling time does increase linearly with the barrier width. A recent optical experiment seems to be in agreement with our theoretical previsions.
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"abstract": "In this paper we calculate the analytic expression of the phase time for the\nscattering of an electron off a complex square barrier. As is well known the\n(negative) imaginary part of the potential takes into account,\nphenomenologically, the absorption. We investigate the so-called\nHartman-Fletcher effect, and find that it is suppressed by the presence of a\n(not negligible) imaginary potential. In fact, when a sufficiently large\nabsorption is present, the asymptotical transmission speed is finite. Actually,\nthe tunnelling time does increase linearly with the barrier width. A recent\noptical experiment seems to be in agreement with our theoretical previsions.",
"arxiv_id": "quant-ph/0203091",
"authors": [
"Fabio Raciti",
"Giovanni Salesi"
],
"categories": [
"quant-ph"
],
"doi": "10.1051/jp1:1994220",
"journal_ref": "J. de Phys. I (France) 4 (1994) 1783-1789",
"title": "Complex--Barrier Tunnelling Times",
"url": "https://arxiv.org/abs/quant-ph/0203091"
},
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