Quantum mechanics of the electromagnetic environment in the single-junction coulomb blockade
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Quantum mechanics of the electromagnetic environment in the single-junction coulomb blockade. / Flensberg, K.; Girvin, S. M.; Jonson, M.; Penn, D. R.; Stiles, M. D.
In: Physica Scripta, Vol. 1992, No. T42, 01.01.1992, p. 189-206.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Quantum mechanics of the electromagnetic environment in the single-junction coulomb blockade
AU - Flensberg, K.
AU - Girvin, S. M.
AU - Jonson, M.
AU - Penn, D. R.
AU - Stiles, M. D.
PY - 1992/1/1
Y1 - 1992/1/1
N2 - We discuss the interaction of a tunneling electron with its electromagnetic environment when the latter either is in equilibrium or includes an applied microwave field. The environment of an isolated tunnel junction is modeled by a set of harmonic oscillators that are suddenly displaced when an electron tunnels across the junction. We treat these displaced oscillators quantum mechanically, predicting behavior that is very different than that predicted by a semiclassical treatment. In particular, the shape of the zero-bias anomaly caused by the Coulomb blockade (a single-electron charging effect), is found to be strongly dependent on the impedance, Z(ω), of the leads connected to the junction. Comparison with three recent experiments demonstrates that the quantum mechanical treatment of this model correctly describes the essential physics in these systems.
AB - We discuss the interaction of a tunneling electron with its electromagnetic environment when the latter either is in equilibrium or includes an applied microwave field. The environment of an isolated tunnel junction is modeled by a set of harmonic oscillators that are suddenly displaced when an electron tunnels across the junction. We treat these displaced oscillators quantum mechanically, predicting behavior that is very different than that predicted by a semiclassical treatment. In particular, the shape of the zero-bias anomaly caused by the Coulomb blockade (a single-electron charging effect), is found to be strongly dependent on the impedance, Z(ω), of the leads connected to the junction. Comparison with three recent experiments demonstrates that the quantum mechanical treatment of this model correctly describes the essential physics in these systems.
UR - http://www.scopus.com/inward/record.url?scp=0347909636&partnerID=8YFLogxK
U2 - 10.1088/0031-8949/1992/T42/032
DO - 10.1088/0031-8949/1992/T42/032
M3 - Journal article
AN - SCOPUS:0347909636
VL - 1992
SP - 189
EP - 206
JO - Physica Scripta. Topical Issues
JF - Physica Scripta. Topical Issues
SN - 0281-1847
IS - T42
ER -
ID: 199596942