Zobrazeno 1 - 10
of 149
pro vyhledávání: '"Raichev, O. E."'
We report on the optical realization of the magneto-intersubband oscillations that have been measured in the sub-terahertz transmittance of a GaAs quantum well with two subbands occupied. Following their dc analogue, the oscillations are periodic in
Externí odkaz:
http://arxiv.org/abs/2402.06453
Autor:
Raichev, O. E.
It is shown that the ideal boundary between a perfectly conducting electrode and electron liquid state acts as a contact whose conductance per unit area is higher than the fundamental Sharvin conductance by a numerical coefficient $2 \alpha$, where $
Externí odkaz:
http://arxiv.org/abs/2202.06623
Autor:
Raichev, O. E.
Publikováno v:
Phys. Rev. B 105, L041301 (2022)
An approximate analytical solution of the boundary slip problem in magnetic field is obtained by using the general form of boundary conditions for the distribution function of fermions with the isotropic energy spectrum. Exact numerical calculations
Externí odkaz:
http://arxiv.org/abs/2202.06615
Autor:
Gusev, G. M., Olshanetsky, E. B., Hernandez, F. G. G., Raichev, O. E., Mikhailov, N. N., Dvoretsky, S. A.
Publikováno v:
Physical Review B 103, 035302 (2021)
The double quantum well systems consisting of two HgTe layers separated by a tunnel-transparent barrier are expected to manifest a variety of phase states including two-dimensional gapless semimetal and two-dimensional topological insulator. The pres
Externí odkaz:
http://arxiv.org/abs/2101.05266
Publikováno v:
Phys. Rev. B 101, 235314 (2020)
We develop a classical kinetic theory of magnetotransport of 2D electrons in narrow channels with partly diffusive boundary scattering and apply it to description of magnetoresistance measured in the temperature interval 4.2-30 K in long mesoscopic b
Externí odkaz:
http://arxiv.org/abs/2006.12396
Autor:
Raichev, O. E.
Publikováno v:
Physical Review B 97, 245310 (2018)
The linear response of two-dimensional electron gas in a perpendicular magnetic field in the presence of a spatially dependent classically smooth electrostatic potential is studied theoretically, by application of the Kubo formula for nonlocal conduc
Externí odkaz:
http://arxiv.org/abs/2006.12351
Autor:
Raichev, O. E.
Publikováno v:
Physical Review Letters 120, 146802 (2018)
It is shown that the classical commensurability phenomena in weakly modulated two-dimensional electron systems is a manifestation of the intrinsic properties of the correlation functions describing a homogeneous electron gas in a magnetic field. The
Externí odkaz:
http://arxiv.org/abs/2006.12339
Autor:
Gusev, G. M., Olshanetsky, E. B., Hernandez, F. G. G., Raichev, O. E., Mikhailov, N. N., Dvoretsky, S. A.
Publikováno v:
Phys. Rev. B 101, 241302 (2020)
The two-dimensional topological insulator phase has been observed previously in single HgTe-based quantum wells with inverted subband ordering. In double quantum wells (DQWs), coupling between the layers introduces additional degrees of freedom leadi
Externí odkaz:
http://arxiv.org/abs/2004.04062
Autor:
Raichev, O. E., Zudov, M. A.
Publikováno v:
Phys. Rev. Research 2, 022011 (2020)
We develop a theory of nonlinear response to an electric field of two-dimensional (2D) fermions with topologically non-trivial wave functions characterized by the Berry phase $\Phi_n = n \pi, n = 1,2,...$. In particular, we find that owing to suppres
Externí odkaz:
http://arxiv.org/abs/2002.03972
Autor:
Gusev, G. M., Kvon, Z. D., Levin, A. D., Olshanetsky, E. B., Raichev, O. E., Mikhailovand, N. N., Dvoretsky, S. A.
Publikováno v:
Scientific Reports, volume 9, 831 (2019)
We have measured the differential resistance in a two-dimensional topological insulator (2DTI) in a HgTe quantum well, as a function of the applied dc current. The transport near the charge neutrality point is characterized by a pair of counter propa
Externí odkaz:
http://arxiv.org/abs/1901.10297