Zobrazeno 1 - 10
of 878
pro vyhledávání: '"Shashkin A. P."'
Autor:
Melnikov, M. Yu., Smirnov, D. G., Shashkin, A. A., Huang, S. -H., Liu, C. W., Kravchenko, S. V.
We find that the double-threshold voltage-current characteristics in the insulating regime in the ultra-clean two-valley two-dimensional electron system in SiGe/Si/SiGe quantum wells are promoted by perpendicular magnetic fields, persisting to an ord
Externí odkaz:
http://arxiv.org/abs/2409.06686
Publikováno v:
Appl. Phys. Lett. 125, 153102 (2024)
We have developed a technique that dramatically reduces the contact resistances and depletes a shunting channel between the contacts outside the Hall bar in ultra-high mobility SiGe/Si/SiGe heterostructures. It involves the creation of three overlapp
Externí odkaz:
http://arxiv.org/abs/2405.18229
Publikováno v:
Phys. Rev. B 109, L041114 (2024)
We report the observation of two-threshold voltage-current characteristics accompanied by a peak of broadband current noise between the two threshold voltages in the insulating state at low densities in the 2D electron system in ultra-high mobility S
Externí odkaz:
http://arxiv.org/abs/2310.03145
Autor:
Melnikov, M. Yu., Shakirov, A. A., Shashkin, A. A., Huang, S. -H., Liu, C. W., Kravchenko, S. V.
Publikováno v:
Sci. Rep. 13, 17364 (2023)
The effective mass at the Fermi level is measured in the strongly interacting two-dimensional (2D) electron system in ultra-clean SiGe/Si/SiGe quantum wells in the low-temperature limit in tilted magnetic fields. At low electron densities, the effect
Externí odkaz:
http://arxiv.org/abs/2304.04272
Publikováno v:
E3S Web of Conferences, Vol 124, p 01044 (2019)
The article deals with the development of a hybrid energy complex (HEC) based on solid oxide fuel cells (SOFC) operating on biogas. Low maneuverability of SOFC prevents a widespread use of such power installations in consumers’ power supply systems
Externí odkaz:
https://doaj.org/article/9c5cd4eaf92c4de19c58f0d15f92329f
Autor:
Shashkin, A. A., Kravchenko, S. V.
Publikováno v:
JETP 135, 432 (2022)
Using several independent methods, we find that the metal-insulator transition occurs in the strongly-interacting two-valley two-dimensional electron system in ultra-high mobility SiGe/Si/SiGe quantum wells in zero magnetic field. The transition surv
Externí odkaz:
http://arxiv.org/abs/2208.05356
Publikováno v:
JETP Lett. 116, 156 (2022)
We review recent experimental results indicating the band flattening and Landau level merging at the chemical potential in strongly-correlated two-dimensional (2D) electron systems. In ultra-clean, strongly interacting 2D electron system in SiGe/Si/S
Externí odkaz:
http://arxiv.org/abs/2204.12565
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-6 (2023)
Abstract The effective mass at the Fermi level is measured in the strongly interacting two-dimensional (2D) electron system in ultra-clean SiGe/Si/SiGe quantum wells in the low-temperature limit in tilted magnetic fields. At low electron densities, t
Externí odkaz:
https://doaj.org/article/935d3eea224548a2b6d2453420162f70
Autor:
Shashkin, A. A., Melnikov, M. Yu., Dolgopolov, V. T., Radonjić, M. M., Dobrosavljević, V., Huang, S. -H., Liu, C. W., Zhu, Amy Y. X., Kravchenko, S. V.
Publikováno v:
Sci. Rep. 12, 5080 (2022)
The increase in the resistivity with decreasing temperature followed by a drop by more than one order of magnitude is observed on the metallic side near the zero-magnetic-field metal-insulator transition in a strongly interacting two-dimensional elec
Externí odkaz:
http://arxiv.org/abs/2106.05927
Autor:
Shashkin, A. A., Kravchenko, S. V.
Publikováno v:
Ann. Phys. 435, 168542 (2021)
We review recent experimental results on the metal-insulator transition and low-density phases in strongly-interacting, low-disordered Si-based two-dimensional electron systems. Special attention is given to the metallic state in ultra-clean SiGe qua
Externí odkaz:
http://arxiv.org/abs/2102.00114