Zobrazeno 1 - 10
of 150
pro vyhledávání: '"Ponomarenko, L. P."'
Autor:
Ponomarenko, L. A., Principi, Alessandro, Niblett, A. D., Wang, Wendong, Gorbachev, R. V., Kumaravadive, Piranavan, Berdyugin, A. I., Ermakov, A. V., Slizovskiy, Sergey, Watanabe, Kenji, Taniguchi, Takashi, Ge, Qi, Fal'ko, V. I., Eaves, Laurence, Greenaway, M. T., Geim, A. K.
Publikováno v:
Nature Communications 15, 9869 (2024)
Coulomb drag between adjacent electron and hole gases has attracted considerable attention, being studied in various two-dimensional systems, including semiconductor and graphene heterostructures. Here we report measurements of electron-hole drag in
Externí odkaz:
http://arxiv.org/abs/2410.10640
Autor:
Xin, Na, Lourembam, James, Kumaravadivel, P., Kazantsev, A. E., Wu, Zefei, Mullan, Ciaran, Barrier, Julien, Geim, Alexandra A., Grigorieva, I. V., Mishchenko, A., Principi, A., Falko, V. I., Ponomarenko, L. A., Geim, A. K., Berdyugin, Alexey I.
Publikováno v:
Nature 616, 270-274 (2023)
The most recognizable feature of graphene's electronic spectrum is its Dirac point around which interesting phenomena tend to cluster. At low temperatures, the intrinsic behavior in this regime is often obscured by charge inhomogeneity but thermal ex
Externí odkaz:
http://arxiv.org/abs/2302.06863
Autor:
Greenaway, M. T., Kumaravadivel, P., Wengraf, J., Ponomarenko, L. A., Li, A. I. Berdyugin. J., Edgar, J. H., Kumar, R. Krishna, Geim, A. K., Eaves, L.
Oscillatory magnetoresistance measurements on graphene have revealed a wealth of novel physics. These phenomena are typically studied at low currents. At high currents, electrons are driven far from equilibrium with the atomic lattice vibrations so t
Externí odkaz:
http://arxiv.org/abs/2110.09812
Autor:
Berdyugin, Alexey I., Xin, Na, Gao, Haoyang, Slizovskiy, Sergey, Dong, Zhiyu, Bhattacharjee, Shubhadeep, Kumaravadivel, P., Xu, Shuigang, Ponomarenko, L. A., Holwill, Matthew, Bandurin, D. A., Kim, Minsoo, Cao, Yang, Greenaway, M. T., Novoselov, K. S., Grigorieva, I. V., Watanabe, K., Taniguchi, T., Fal'ko, V. I., Levitov, L. S., Kumar, R. Krishna, Geim, A. K.
Publikováno v:
Science 375, 430-433 (2022)
In thermodynamic equilibrium, current in metallic systems is carried by electronic states near the Fermi energy whereas the filled bands underneath contribute little to conduction. Here we describe a very different regime in which carrier distributio
Externí odkaz:
http://arxiv.org/abs/2106.12609
Autor:
Barrier, Julien, Kumaravadivel, Piranavan, Krishna-Kumar, Roshan, Ponomarenko, L. A., Xin, Na, Holwill, Matthew, Mullan, Ciaran, Kim, Minsoo, Gorbachev, R. V., Thompson, M. D., Prance, J. R., Taniguchi, T., Watanabe, K., Grigorieva, I. V., Novoselov, K. S., Mishchenko, A., Fal'ko, V. I., Geim, A. K., Berdyugin, A. I.
Publikováno v:
Nat Commun 11, 5756 (2020)
In quantizing magnetic fields, graphene superlattices exhibit a complex fractal spectrum often referred to as the Hofstadter butterfly. It can be viewed as a collection of Landau levels that arise from quantization of Brown-Zak minibands recurring at
Externí odkaz:
http://arxiv.org/abs/2006.15040
Autor:
Ponomarenko L. V.
Publikováno v:
Український соціум, Vol 2, Iss 85, Pp 119-129 (2023)
The paper considers the problem of Russian war crimes in Ukraine in the context of the archetypal approach, in particular, the peculiarities of the influence of Russian society on the delinquent character of the Russian occupation forces. During the
Externí odkaz:
https://doaj.org/article/612e947f2ffe4c029756fa8935b3d22e
Autor:
Wallbank, J. R., Kumar, R. Krishna, Holwill, M., Wang, Z., Auton, G. H., Birkbeck, J., Mishchenko, A., Ponomarenko, L. A., Watanabe, K., Taniguchi, T., Novoselov, K. S., Aleiner, I. L., Geim, A. K., Fal'ko, V. I.
Publikováno v:
Nature Physics (2018)
Umklapp processes play a fundamental role as the only intrinsic mechanism that allows electrons to transfer momentum to the crystal lattice and, therefore, provide a finite electrical resistance in pure metals. However, umklapp scattering has proven
Externí odkaz:
http://arxiv.org/abs/1808.05592
Autor:
Kumar, R. Krishna, Mishchenko, A., Chen, X., Pezzini, S., Auton, G. H., Ponomarenko, L. A., Zeitler, U., Eaves, L., Fal'ko, V. I., Geim, A. K.
Publikováno v:
Proc. Natl. Acad. Sci. (2018)
Graphene superlattices were shown to exhibit high-temperature quantum oscillations due to periodic emergence of delocalized Bloch states in high magnetic fields such that unit fractions of the flux quantum pierce a superlattice unit cell. Under these
Externí odkaz:
http://arxiv.org/abs/1804.09476
Autor:
Kumar, R. Krishna, Chen, X., Auton, G. H., Mishchenko, A., Bandurin, D. A., Morozov, S. V., Cao, Y., Khestanova, E., Shalom, M. Ben, Kretinin, A. V., Novoselov, K. S., Eaves, L., Grigorieva, I. V., Ponomarenko, L. A., Fal'ko, V. I., Geim, A. K.
Publikováno v:
Science 357, 181-184 (2017)
Cyclotron motion of charge carriers in metals and semiconductors leads to Landau quantization and magneto-oscillatory behavior in their properties. Cryogenic temperatures are usually required to observe these oscillations. We show that graphene super
Externí odkaz:
http://arxiv.org/abs/1705.11170
Autor:
Kumar, R. Krishna, Bandurin, D. A., Pellegrino, F. M. D., Cao, Y., Principi, A., Guo, H., Auton, G. H., Shalom, M. Ben, Ponomarenko, L. A., Falkovich, G., Watanabe, K., Taniguchi, T., Grigorieva, I. V., Levitov, L. S., Polini, M., Geim, A. K.
Publikováno v:
Nature Physics 13, 1182-1185 (2017)
Electron-electron (e-e) collisions can impact transport in a variety of surprising and sometimes counterintuitive ways. Despite strong interest, experiments on the subject proved challenging because of the simultaneous presence of different scatterin
Externí odkaz:
http://arxiv.org/abs/1703.06672