Optical properties of superthin niobium films deposited on crystalline quartz

Alieva, E. V.; Firsov, E.I.; Kuzik, L. A.; Yakolev, V.A.; Pudonin, F. A.

doi:10.1016/0375-9601(91)90635-l

Cited by 22 publications

(2 citation statements)

References 5 publications

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“…It is interesting to note that a local field calculation of the optical diamagnetic response of a metallic quantum well by Keller and Liu [9] resulted in a good agreement with the recently observed infrared reflection spectra of Nb films deposited on crystalline quartz of thickness 3-100 Å by Alieva et al [10]. However, we have found [7] that the oscillatory dependence in references [7,8] cannot be demonstrated by using the calculations in references [9].…”

Section: Introductionsupporting

confidence: 77%

On the infrared optical response of metallic thin films: a quantum size effect

Xiao

Villagómez

Alvarez

2000

J. Phys.: Condens. Matter

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We present a quantum mechanical calculation of the diamagnetic optical response of metallic ultrathin films. The study shows that in the optical response of ultrathin films (less than 100 Å in thickness), there exists an oscillatory dependence on the film thickness, and the period of the oscillation corresponds to one or a few monolayers. We show that the oscillation can be attributed to the intraband fluctuations of the valence electrons in discrete energy states. For comparison, we present experimental results on the infrared ( = 9.2 µm) optical reflectance of Al ultrathin films of thickness 5-112 Å, which exhibit experimentally the predicted oscillations.

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Section: Introductionsupporting

confidence: 77%

On the infrared optical response of metallic thin films: a quantum size effect

Xiao

Villagómez

Alvarez

2000

J. Phys.: Condens. Matter

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“…The frequency dependence of the dielectric constant of the quartz substrate ( Q ) are as in Ref. 13, and the relaxation energy used in Figs. 3-9 is ប/ϭ0.6 meV.…”

Section: A Photon Drag In a Single Quantum Wellmentioning

confidence: 99%

Photon drag in single and multiple two-level quantum wells

Chen

Keller

1997

Phys. Rev. B

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Starting from a density-matrix operator description we derive an expression for the photon-drag response tensor of a quantum-well system containing an arbitrary number of subbands. Subsequently we analyze the structure of the nonlinear response tensor and make a specialization to the case of a two-level quantum well. In the wake of a self-consistent calculation of the local fields in a two-level well and in multiple quantum wells the photon-drag currents are determined. We illustrate the main ingredients of our theory by carrying out a number of numerical calculations of the drag current in a 15-Å wide niobium quantum well deposited on a crystalline quartz substrate and a GaAs/Al x Ga 1Ϫx As multiple-quantum-well structure. In particular we pay attention to the frequency, angle of incidence, and number of wells dependencies of the current, and we demonstrate that local-field effects may give rise to a significant blueshift and an asymmetric form of the resonance peak.

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Optical Near-Field Interaction: On The Local Field Inside a Quantum Tip

Keller

1993

Near Field Optics

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Optical properties of superthin niobium films deposited on crystalline quartz

Cited by 22 publications

References 5 publications

On the infrared optical response of metallic thin films: a quantum size effect

On the infrared optical response of metallic thin films: a quantum size effect

Photon drag in single and multiple two-level quantum wells

Optical Near-Field Interaction: On The Local Field Inside a Quantum Tip

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