Direct experimental estimations of the low-energy (1.5 ∼ 10 meV) complex dielectric constants spectrum and its temperature variation have been investigated for La0.7Ca0.3MnO3 thin films using terahertz time-domain spectroscopy. At low temperatures, a clear Drude-term emerges. With increasing temperature, the scattering rate increases, while the plasma frequency decreases, derived both from a si...

By now more than 100 years passed since Paul Drude suggested his highly acclaimed model of electronic transport. In the form advanced by A. Sommerfeld, the Drude model is still heavily utilized to describe, for instance, the optical properties of metals. Surprisingly, the key prediction of the Drude model, the frequency dependence of the complex conductivity with its pronounced roll-off was dir...

Direct experimental estimations of the low-energy (1.5∼10 meV) complex dielectric constants spectrum and its temperature variation have been investigated for La 0.7 Ca 0.3 MnO 3 thin films using terahertz time-domain spec-troscopy. At low temperatures, a clear Drude-term emerges. With increasing temperature, the scattering rate increases, while the plasma frequency decreases, derived both from ...

It is commonly believed that the Drude conductivity is not renormalized by many-body interactions. To the contrary, we show that for impure metals the Drude conductivity is decreased by a temperaturedependent factor proportional to the electron-phonon coupling l. We demonstrate this effect by both the linear response and the quantum transport approaches. This effect, while comparable to the bar...

As the plasmonic scatterers get much smaller than the wavelength of the incident light, local material models like the Drude model and the Lorentz model become inadequate to describe accurately the light-matter interactions. To overcome this, a sophisticated nonlocal hydrodynamic Drude model is investigated. In practice, it is further simplified and simulated with the curl-free approximation, w...

We have investigated the temperature dependence of the optical conductivity of GdRu4P12, which shows an antiferromagnetic ordering below TN 1⁄4 22K. Above TN, the optical conductivity spectra exhibit a Drude-like feature due to the free carriers. However, below TN a new peak was found to develop around 30meV in addition to the narrowing of the Drude component. We assigned this peak to the elect...

Recently we presented a first-generation all-atom Drude polarizable force field for DNA based on the classical Drude oscillator model, focusing on optimization of key dihedral angles followed by extensive validation of the force field parameters. Presently, we describe the procedure for balancing the electrostatic interactions between ions, water, and DNA as required for development of the Drud...