The optical response of the technologically interesting multiferroic BiFeO 3 and related
complex iron oxides, having high Néel or Curie temperature, is studied in the wide spectral …

Bismuth tri-iodide (BiI 3) is an intermediate band gap semiconductor with potential for room
temperature gamma-ray detection applications. Remarkably, very different band gap …

In this work, we report a nature indefinite permittivity in crystalline graphite that exhibits
negative group refraction at ultraviolet region. A hyperbolic equifrequency contour was …

We report on the anisotropic optical properties of single-crystal tin monosulfide (SnS). The
components ε a, ε b, and ε c of the pseudodielectric-function tensor⟨ ε⟩=⟨ ε 1⟩+ i⟨ ε 2⟩ …

The spectroscopic dielectric functions of highly oriented pyrolytic graphite (HOPG) are
determined at nine different wavelengths from 405 to 750 nm (3.06–1.65 eV). This …

The optical properties of Ti 2 AlN and Ti 2 AlC were determined in the 2–80 eV energy range
by electron energy loss spectroscopy and in the visible-ultraviolet range, from 1.6 to 5.5 eV …

The results of theoretical and experimental studies of charge transfer (CT) transitions in
multiferroic manganites, ferrites, and related insulators are reviewed. Starting with a simple …

TbScO 3 is a wide bandgap semiconductor with potential applications in charge trap
memory devices and acts as an alternate gate dielectric in fully depleted transistors and also …

Searching for natural materials exhibiting larger electron-electron interactions constitutes a
traditional approach to high-temperature superconductivity research. Very recently, we …

Multiferroics are materials with coexisting magnetic and ferroelectric orders, which show
potential for electrically controlled spintronic devices. A common application of ferroelectrics …