Zobrazeno 1 - 10 of 76 pro vyhledávání: '"Denis, Karaiskaj"'
1
Insulator-to-metal phase transition in a few-layered MoSe2 field effect transistor
Autor: Nihar R. Pradhan, Carlos Garcia, Bhaswar Chakrabarti, Daniel Rosenmann, Ralu Divan, Anirudha V. Sumant, Suzanne Miller, David Hilton, Denis Karaiskaj, Stephen A. McGill
Publikováno v: Nanoscale. 15:2667-2673
We report an insulator-to-metal phase transition in a few-layer MoSe2 field-effect transistor. The conductivity (shown in figure) becomes metallic at a critical carrier density of 1.2 x 1012 cm-2 and is analyzed using percolation theory.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::53414be55f251f2444f73f4079cfdadc
https://doi.org/10.1039/d2nr05019f
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2
Akademický článek
Biexcitons in monolayer transition metal dichalcogenides tuned by magnetic fields
Autor: Christopher. E. Stevens, Jagannath Paul, Timothy Cox, Prasana K. Sahoo, Humberto R. Gutiérrez, Volodymyr Turkowski, Dimitry Semenov, Steven A. McGill, Myron D. Kapetanakis, Ilias E. Perakis, David J. Hilton, Denis Karaiskaj
Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Biexciton complexes in atomically thin transition metal dichalcogenides have unusually large binding energies. Here, the authors explore biexciton formation dynamics in monolayer MoSe2 in the presence of magnetic fields up to 25 T.
Externí odkaz: https://doaj.org/article/3b5ec816d4f04df093ad20f6be464051
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4
High broadband photoconductivity of few-layered MoS2 field-effect transistors measured using multi-terminal methods: effects of contact resistance
Autor: Govinda Ghimire, Bhausaheb V. Tawade, Anirudha V. Sumant, Denis Karaiskaj, Qilin Dai, Stephen McGill, Nihar R. Pradhan, Alamgir Karim, Jawnaye Nash, Ralu Divan, Varun Mapara, Daniel Rosenmann, P. Das, Micah Webb, Raelyn Burns, Dharmaraj Raghavan, Paresh Chandra Ray
Publikováno v: Nanoscale. 12:22904-22916
Among the layered two dimensional semiconductors, molybdenum disulfide (MoS2) is considered to be an excellent candidate for applications in optoelectronics and integrated circuits due to its layer-dependent tunable bandgap in the visible region, hig
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a202efdff030aa743fcf128ce51938ba
https://doi.org/10.1039/d0nr07311c
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6
Enhanced optical mode coherence in exchange coupled soft magnetic multilayers
Autor: Agne Ciuciulkaite, Denis Karaiskaj, Vassilios Kapaklis, Dario Arena, Hengzhou Liu
Publikováno v: Journal of Applied Physics. 131:213902
We report on an all-optical investigation of coupled spin excitation modes in a series of magnetic trilayer structures. Using time-resolved magneto-optic Kerr effect (tr-MOKE) magnetometry, we observe multi-mode coherent spin excitations in [Formula:
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9448051f450fc88eea211b86cc1ffe66
https://doi.org/10.1063/5.0093827
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7
Isotopic disorder in integer and fractional quantum Hall effects
Autor: Denis Karaiskaj
Publikováno v: Physical Review B. 103
The energy of the activation gaps in the quantum Hall effect has been thought to be reduced by the broadening of the Landau levels due to disorder. The isotopic mass can affect the electron-phonon interactions and the 0 K renormalization of the condu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1cd2f3e1ce46bcd221c2b44d63436987
https://doi.org/10.1103/physrevb.103.094305
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8
High broadband photoconductivity of few-layered MoS
Autor: Priyanka, Das, Jawnaye, Nash, Micah, Webb, Raelyn, Burns, Varun N, Mapara, Govinda, Ghimire, Daniel, Rosenmann, Ralu, Divan, Denis, Karaiskaj, Stephen A, McGill, Anirudha V, Sumant, Qilin, Dai, Paresh C, Ray, Bhausaheb, Tawade, Dharmaraj, Raghavan, Alamgir, Karim, Nihar R, Pradhan
Publikováno v: Nanoscale. 12(45)
Among the layered two dimensional semiconductors, molybdenum disulfide (MoS2) is considered to be an excellent candidate for applications in optoelectronics and integrated circuits due to its layer-dependent tunable bandgap in the visible region, hig
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::9769855a9b6e9612fe296d38ca393bcf
https://pubmed.ncbi.nlm.nih.gov/33185228
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9
Biexcitons in monolayer transition metal dichalcogenides tuned by magnetic fields
Autor: Ilias E. Perakis, C. E. Stevens, Timothy Cox, Steven A. McGill, Dimitry Semenov, Myron D. Kapetanakis, Volodymyr Turkowski, Humberto R. Gutierrez, David J. Hilton, J. Paul, Denis Karaiskaj, Prasana Sahoo
Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
We present time-integrated four-wave mixing measurements on monolayer MoSe2 in magnetic fields up to 25 T. The experimental data together with time-dependent density function theory calculations provide interesting insights into the biexciton formati
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d6c9e2852b144e2e2396d747f8217c7
http://link.springer.com/article/10.1038/s41467-018-05643-1
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10
Coherent two-dimensional Fourier transform spectroscopy using a 25 Tesla resistive magnet
Autor: Dimitry Semenov, Denis Karaiskaj, J. Paul, Ryan P. Smith, Varun Mapara, Robert A. Kaindl, Steven A. McGill, David J. Hilton, Prasenjit Dey, C. E. Stevens
Publikováno v: The Review of scientific instruments. 90(6)
We performed nonlinear optical two-dimensional Fourier transform spectroscopy measurements using an optical resistive high-field magnet on GaAs quantum wells. Magnetic fields up to 25 T can be achieved using the split helix resistive magnet. Two-dime
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00c5997026b0f97849180965c829e29c
https://pubmed.ncbi.nlm.nih.gov/31255018
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