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Conductivity of a superlattice with parabolic miniband
Mesoscale and Nanoscale Physics · Submitted 14 May 2007
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Analysis shows that superlattices with parabolic miniband dispersion law may be used for generation and amplification of terahertz fields only at very low temperatures.
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The abstract, sentence by sentence
The static and high-frequency differential conductivity of a one-dimensional superlattice with parabolic miniband, in which the dispersion law is assumed to be parabolic up to the Brillouin zone edge, are investigated theoretically. Unlike the earlier published works, devoted to this problem, the novel formula for the static current density contains temperature dependence, which leads to the current maximum shift to the low field side with increasing temperature. The high-frequency differential conductivity response properties including the temperature dependence is examined and opportunities of creating a terahertz oscillator on Bloch electron oscillations in such superlattices are discussed. Analysis shows that superlattices with parabolic miniband dispersion law may be used for generation and amplification of terahertz fields only at very low temperatures.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The static and high-frequency differential conductivity of a one-dimensional superlattice with parabolic miniband, in which the dispersion law is assumed to be parabolic up to the Brillouin zone edge, are investigated theoretically. | contribution 0.91 | 0.87 | 0.04 | asserted 0.88 |
| s1 | Unlike the earlier published works, devoted to this problem, the novel formula for the static current density contains temperature dependence, which leads to the current maximum shift to the low field side with increasing temperature. | result 0.68 | 0.87 | 0.14 | asserted 1.00 |
| s2 | The high-frequency differential conductivity response properties including the temperature dependence is examined and opportunities of creating a terahertz oscillator on Bloch electron oscillations in such superlattices are discussed. | contribution 0.88 | 0.83 | 0.08 | asserted 0.51 |
| s3 | Analysis shows that superlattices with parabolic miniband dispersion law may be used for generation and amplification of terahertz fields only at very low temperatures. | interpretation 0.55 | 0.86 | 0.76 | hedged possibility 0.92 |
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Original abstract
The static and high-frequency differential conductivity of a one-dimensional superlattice with parabolic miniband, in which the dispersion law is assumed to be parabolic up to the Brillouin zone edge, are investigated theoretically. Unlike the earlier published works, devoted to this problem, the novel formula for the static current density contains temperature dependence, which leads to the current maximum shift to the low field side with increasing temperature. The high-frequency differential conductivity response properties including the temperature dependence is examined and opportunities of creating a terahertz oscillator on Bloch electron oscillations in such superlattices are discussed. Analysis shows that superlattices with parabolic miniband dispersion law may be used for generation and amplification of terahertz fields only at very low temperatures.
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