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Structurally anisotropic materials are ubiquitous in several application fields, yet their accurate optical characterization remains challenging due to the lack of general models linking their scattering coefficients to the macroscopic…

Black phosphorus has recently emerged as a promising material for high performance electronic and optoelectronic device for its high mobility, tunable mid-infrared bandgap and anisotropic electronic properties. Dynamical evolution of photo…

We apply the generalized Boltzmann theory to describe thermoelectric transport properties of monolayer phosphorene in the presence of short- and long-range charged impurity interactions. First, we propose a low-energy Hamiltonian to explore…

Mesoscale and Nanoscale Physics · Physics 2017-01-27 Moslem Zare , Babak Zare Rameshti , Farnood G. Ghamsari , Reza Asgari

Black phosphorus has attracted great research interest due to its numerous applications in electronic devices, optoelectronic devices, energy storages and so on. Compared with the majority of two-dimensional materials, black phosphorus…

Mesoscale and Nanoscale Physics · Physics 2019-10-02 Zhen Tian , Yu Gan , Taiming Zhang , Binbin Wang , Hengxing Ji , Yexin Feng , Jiamin Xue

In this manuscript, we report the results of optical properties of SnS thin films, deposited on FTO coated glass substrates at room temperature by thermal evaporation technique. In addition, the effect of film thickness on the optical…

Materials Science · Physics 2023-01-20 Vinita , P. Arun , Chandra Kumar , R. Rai , B. K. Singh

We studied theoretically the effect of a low concentration of adsorbed polar molecules on the optical conductivity of graphene, within the Kubo linear response approximation. Our analysis is based on a continuum model approximation that…

Mesoscale and Nanoscale Physics · Physics 2021-07-07 Horacio Falomir , Marcelo Loewe , Enrique Muñoz

Isolation and characterization of mechanically exfoliated black phosphorus flakes with a thickness down to two single-layers is presented. A modification of the mechanical exfoliation method, which provides higher yield of atomically thin…

Black phosphorus (BP) with its enticing electric and optical properties is intensely researched in the field of optoelectronics. In this paper, Q-switched pulses at 1550 nm and 2 um wavelengths are obtained by inserting bulk-structured BP…

Optics · Physics 2015-04-29 Tian Jiang , Ke Yin , Xin Zheng , Hao Yu , Xiang-Ai Cheng

The competition between the electron-hole Coulomb attraction and the three-dimensional dielectric screening dictates the optical properties of layered semiconductors. In low-dimensional materials, the equilibrium dielectric environment can…

The complex optical conductivity tensor is calculated for the Co|Pt systems by applying a contour integration technique within the framework of the spin-polarized relativistic screened Korringa-Kohn-Rostoker method. It is shown that the…

Materials Science · Physics 2009-11-07 A. Vernes , L. Szunyogh , L. Udvardi , P. Weinberger

We investigate the optical absorption and transmission of few-layer phosphorene in the framework of ab initio density functional simulations and many-body perturbation theory at the level of random phase approximation. In bilayer…

Mesoscale and Nanoscale Physics · Physics 2018-11-13 Zahra Torbatian , Reza Asgari

The electronic properties of monolayer phosphorene are exotic due to its puckered structure and large intrinsic direct band gap. We derive and discuss its band structure in the presence of a perpendicular magnetic field. Further, we…

Mesoscale and Nanoscale Physics · Physics 2015-07-23 M. Tahir , P. Vasilopoulos , F. M. Peeters

The optical conductivity of heavy fermions can reveal fundamental properties of the charge carrier dynamics in these strongly correlated electron systems. Here we extend the conventional techniques of infrared optics on heavy fermions by…

Strongly Correlated Electrons · Physics 2016-04-13 Julia P. Ostertag , Marc Scheffler , Martin Dressel , Martin Jourdan

We investigate the vibrational, optical, and electronic properties of insulating YbN thin films using Raman spectroscopy, Fourier-transform infrared spectroscopy, and electrical transport measurements, supported by density functional…

Materials Science · Physics 2026-05-19 M. Markwitz , C. Pot , R. G. Buckley , W. F. Holmes-Hewett , S. Granville

Thanks to its tunable infrared band-gap and to its anisotropic conduction properties, black phosphorus represents a very unique 2D material, whose potential in the engineering of new devices still needs to be fully explored. We investigate…

This study investigates optical and electrical properties of thin melanin films self-organized grown from water solutions of eumelanin extracted from edible plants. The melanin films exhibit the characteristics of a transparent low…

Monolayer black and blue phosphorenes possess electronic and optical properties that result in unique features when the two materials are stacked. We devise a low-strain van-der-Waals double layer and investigate its properties with ab…

Materials Science · Physics 2021-01-29 Michele Re Fiorentin , Giancarlo Cicero , Maurizia Palummo

Due to its corrugated hexagonal lattice structure, Black phosphorus (BP) has unique anisotropic physical properties, which provides an additional freedom for designing devices. Many body interactions, including interactions with phonon, is…

Chemical Physics · Physics 2019-07-23 Shengjie Meng , Hongyan Shi , Hu Jiang , Xiudong Sun , Bo Gao

Optical-absorption cross-sections and energy-loss spectra of aligned multishell carbon nanotubes are investigated, on the basis of photonic band-structure calculations. A local graphite-like dielectric tensor is assigned to every point of…

Materials Science · Physics 2009-11-07 F. J. Garcia-Vidal , J. M. Pitarke

Topological insulator (TI) thin films differ from the more commonly studied semi-infinite bulk TIs in that the former possesses both top and bottom surfaces where the surface states localized at different surfaces can couple to one another…

Mesoscale and Nanoscale Physics · Physics 2017-09-13 Zhuo Bin Siu , Ho Cong Son , Mansoor bin Abdul Jalil , Seng Ghee Tan