Výsledky vyhledávání - "Denis Karaiskaj"

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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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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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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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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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)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::9769855a9b6e9612fe296d38ca393bcf
https://pubmed.ncbi.nlm.nih.gov/33185228

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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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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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