Zobrazeno 1 - 10
of 1 003
pro vyhledávání: '"Levin, P D"'
Publikováno v:
Phys. Rev. B 110, 195402, 2024
We investigated magnetotransport in mesoscopic samples containing electrons from three different subbands in GaAs triple wells. At high temperatures, we observed positive magnetoresistance, which we attribute to the imbalance between different types
Externí odkaz:
http://arxiv.org/abs/2411.02595
Autor:
Levin, A. D., Gusev, G. M., Hernandez, F. G. G., Olshanetsky, E. B., Kovalev, V. M., Entin, M. V., Mikhailov, N. N.
Publikováno v:
Physical Review RESEARCH 6, 023121 (2024)
The resistivity of two-dimensional (2D) metals generally exhibits insensitivity to electron-electron scattering. However, it's worth noting that Galilean invariance may not hold true in systems characterized by a spectrum containing multiple electron
Externí odkaz:
http://arxiv.org/abs/2405.02233
Autor:
Gusev, G. M., Levin, A. D., Olshanetsky, E. B., Kvon, Z. D., Kovalev, V. M., Entin, M. V., Mikhailov, N. N.
Publikováno v:
Phys.Rev.B, v. 109, 035302 (2024)
In this study, we investigate the conductivity of a two-dimensional (2D) system in HgTe quantum well comprising two types of carriers with linear and quadratic spectra, respectively. The interactions between the two-dimensional Dirac holes and the he
Externí odkaz:
http://arxiv.org/abs/2401.01277
Publikováno v:
Physical Review B 108, 115310 (2023)
In this study, we present our experimental investigation on the magnetotransport properties of a two-dimensional electron system in GaAs quantum wells utilizing a variety of device geometries, including obstacles with thin barriers and periodic width
Externí odkaz:
http://arxiv.org/abs/2309.12964
Publikováno v:
Microscopy and Microanalysis 26 (2020) 134-138
The desire to image specimens in liquids has led to the development of open-cell and closed-cell techniques in transmission electron microscopy (TEM). The closed-cell approach is currently more common in TEM and has yielded new insights into a number
Externí odkaz:
http://arxiv.org/abs/2308.09832
Publikováno v:
Nanomaterials, 12(12), 2047 (2022)
We study transport properties of HgTe quantum wells with critical well thickness, where the band gap is closed, and the low energy spectrum is described by a single Dirac cone. In this work, we examined both macroscopic and micron-sized (mesocopic) s
Externí odkaz:
http://arxiv.org/abs/2206.07107
Publikováno v:
Nanomaterials 11, 3364, 2021
The thermoelectric response of 80-nm-thick strained HgTe films of a three-dimensional topological insulator (3D TI) has been studied experimentally. An ambipolar thermopower is observed where the Fermi energy moves from conducting to the valence bulk
Externí odkaz:
http://arxiv.org/abs/2112.05966
In this work, an optic fiber based $\textit{in situ}$ illumination system integrated into an aberration-corrected environmental transmission electron microscope (ETEM) is designed, built, characterized and applied. With this illumination system, the
Externí odkaz:
http://arxiv.org/abs/2104.02006
Publikováno v:
Physical Review B 103, 075303 (2021)
We observe a large negative magnetoresistance and a decrease of resistivity with increasing temperature, known as the Gurzhi effect, in a bilayer electron (BL) system formed by a wide GaAs quantum well. A hydrodynamic model for the single fluid trans
Externí odkaz:
http://arxiv.org/abs/2102.05598
Autor:
Wang, Fulin, Echlin, McLean P., Taylor, Aidan A., Shin, Jungho, Bammes, Benjamin, Levin, Barnaby D. A., De Graef, Marc, Pollock, Tresa M., Gianola, Daniel S.
A monolithic active pixel sensor based direct detector that is optimized for the primary beam energies in scanning electron microscopes is implemented for electron back-scattered diffraction (EBSD) applications. The high detection efficiency of the d
Externí odkaz:
http://arxiv.org/abs/2008.11411