Yu. A. Aleshchenko

Optical Properties of Iron-Selenide Na$$_{0.27}$$K$$_{0.27}$$Rb$$_{0.27}$$Fe$$_{1.7}$$Se$$_2$$ Single Crystals

А.Ы. Муратов, Yevgeny Rakhmanov, Andrei Shilov, Igor Morozov et autres

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Electronic localization on the structural inhomogeneities formed due to Bi and Te deficiency in the MBE grown films of AF topological insulator MnBi2Te4: Evidence from spectroscopic ellipsometry and infrared studies

Natalia N. Kovaleva, Dagmar Chvostova, T. N. Fursova, Andrey V. Muratov et autres

The intrinsic substitutional and antisite defects cause unintentional doping and a shift of the EF position above the conduction band minimum in the AF topological insulator MnBi2Te4. This prevents measurements of the quantum anomalous Hall effect and the investigation of the topological …

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Optical Properties of Superconducting K$$_{0.8}$$Fe$$_{1.7}$$(Se$$_{0.73}$$S$$_{0.27}$$)$$_2$$ Single Crystals

Andrey V. Muratov, Yevgeny Rakhmanov, Andrey L. Shilov, I. B. Morozov et autres

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Experimental and Theoretical Studies of BaFe2As2 Pnictides with Electron Substitution (Brief Review)

T. E. Kuzmicheva, Yu. A. Aleshchenko, P. I. Bezotosnyi, S. Yu. Gavrilkin et autres

Contrary to the sister superconducting (Ba,K)Fe2As2 materials with partial hole substitution, the electron-doped Ba(Fe,TM)2As2 pnictides (where TM is a transition metal) remain relatively understudied so far. In the review, we summarize current advances in the studies of microstructural, transport, magnetic, calorimetric, optical, …

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Cooperative Jahn-Teller dynamics of boron clusters in the infrared conductivity of heavy fermion metal CeB6 and unconventional superconductor ZrB12

Gennady Anatolyevich Komandin, Elena S. Zhukova, Boris Gorshunov, A.N. Azarevich et autres

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Electronic band structure vs intrinsic antisite doping in the MBE grown films MnTe · Bi(2−x)Te3(1−x/2) (0 ≥ x < 2): Evidence from spectroscopic ellipsometry and infrared studies

Natalia N. Kovaleva, Dagmar Chvostova, Andrey V. Muratov, T. N. Fursova et autres

The intrinsic antisite defects, which cause doping in the antiferromagnetic topological insulators of the MnTe ·n Bi2Te3 (n = 1, 2, 3, …,) family, prevent the exploration of the Dirac states affecting the Fermi level (EF) position and magnetic properties. In the …

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Optical and transport properties of Ba(Fe 1−x Ni x ) 2 As 2 films

Yu. A. Aleshchenko, Andrey V. Muratov, Elena S. Zhukova, Lenar S. Kadyrov et autres

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Odnoelektronnyy spektr korotkoperiodnoy InAs/GaSb sverkhreshetki s interfeysnoy kompensatsiey napryazheniy

Vladimir S. Krivobok, G. N. Eroshenko, Andrey V. Muratov, С. Н. Николаев et autres

Впервые для диапазона температур 77-300 К экспериментально восстановлена частотная зависимость комплексного показателя преломления InAs/GaSb сверхрешетки, край фундаментального поглощения которой расположен в дальнем инфракрасном диапазоне, а пластическая релаксация подавлена интерфейсной компенсацией напряжений. Обсуждается энергетическая структура минизон сверхрешетки и ее перестройка с температурой.

THz optical response of Ba(Fe1−xNix)2As2 films analyzed within the three-band Eliashberg s±-wave model

Yu. A. Aleshchenko, Andrey V. Muratov, Elena S. Zhukova, Lenar S. Kadyrov et autres

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One-Electron Spectrum of a Short-Period InAs/GaSb Superlattice with Interface Compensation of Strains

Vladimir S. Krivobok, G. N. Eroshenko, Andrey V. Muratov, С. Н. Николаев et autres

The frequency dependence of the complex refractive index of an InAs/GaSb superlattice where plastic relaxation is suppressed by interface compensation of strains and the fundamental absorption edge falls in the far-infrared range is experimentally determined for the first time at temperatures of …

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Collective and Quasi-Local Modes in the Optical Spectra of YB6 and YbB6 Hexaborides with Jahn–Teller Structural Instability

Nikolay E. Sluchanko, Elena S. Zhukova, L. N. Alyabeva, Boris P. Gorshunov et autres

The broad-band reflection spectra of YB6 and YbB6 hexaborides with Jahn–Teller instability of the boron cage have been measured at room temperature. An optical conductivity analysis has revealed, along with the Drude electronic components, heavily overdamped collective modes, which are notable in …

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Collective and Quasi-Local Modes in the Optical Spectra of YB6 and YbB6 Hexaborides with Jahn–Teller Structural Instability

Nikolay E. Sluchanko, Elena S. Zhukova, Liudmila N. Alyabyeva, Boris P. Gorshunov et autres

Abstract The broad-band reflection spectra of YB6 and YbB6 hexaborides with Jahn–Teller instability of the boron cage have been measured at room temperature. An optical conductivity analysis has revealed, along with the Drude electronic components, heavily overdamped collective modes, which are notable …

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