Výsledky vyhledávání - "Yelgel, Celal"

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Surface termination dependence of electronic and optical properties in Ti$_2$CO$_2$ MXene monolayers

Autor: Kandemir, Zafer, Torun, Engin, Paleari, Fulvio, Yelgel, Celal, Sevik, Cem

Publikováno v: Physical Review Materials 6, 026001 (2022)

Two-dimensional (2D) MXenes are a rapid growing family of 2D materials with rich physical and chemical properties where their surface termination plays an essential role. Among the various 2D MXenes, functionalization of the Ti$_{n}$C$_{n-1}$ phase w

Externí odkaz: http://arxiv.org/abs/2209.10487

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Raman spectroscopy of GaSe and InSe post-transition metal chalcogenides layers

Autor: Molas, Maciej R., Tyurnina, Anastasia V., Zólyomi, Viktor, Ott, Anna K., Terry, Daniel J., Hamer, Matthew J., Yelgel, Celal, Babiński, Adam, Nasibulin, Albert G., Ferrari, Andrea C., Fal'ko, Vladimir I., Gorbachev, Roman

Publikováno v: Faraday Discussions 227, 163 (2021)

III-VI post-transition metal chalcogenides (InSe and GaSe) are a new class of layered semiconductors, which feature a strong variation of size and type of their band gaps as a function of number of layers (N). Here, we investigate exfoliated layers o

Externí odkaz: http://arxiv.org/abs/2003.03336

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Atomic reconstruction in twisted bilayers of transition metal dichalcogenides

Van der Waals heterostructures form a massive interdisciplinary research field, fueled by the rich material science opportunities presented by layer assembly of artificial solids with controlled composition, order and relative rotation of adjacent at

Externí odkaz: http://arxiv.org/abs/1911.12664

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Akademický článek

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Hybrid k$\cdot$p tight-binding model for subbands and infrared intersubband optics in few-layer films of transition-metal dichalcogenides: MoS$_2$, MoSe$_2$, WS$_2$ and WSe${}_2$

Autor: Ruiz-Tijerina, David A., Danovich, Mark, Yelgel, Celal, Zólyomi, Viktor, Fal'ko, Vladimir I.

Publikováno v: Phys. Rev. B. 98, 035411 (2018)

We present a density functional theory parametrized hybrid k$\cdot$p tight binding model for electronic properties of atomically thin films of transition-metal dichalcogenides, 2H-$MX_2$ ($M$=Mo, W; $X$=S, Se). We use this model to analyze intersubba

Externí odkaz: http://arxiv.org/abs/1808.01540

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Nano-imaging of intersubband transitions in van der Waals quantum wells

Autor: Schmidt, Peter, Vialla, Fabien, Latini, Simone, Massicotte, Mathieu, Tielrooij, Klaas-Jan, Mastel, Stefan, Navickaite, Gabriele, Danovich, Mark, Ruiz-Tijerina, David A., Yelgel, Celal, Falko, Vladimir, Thygesen, Kristian, Hillenbrand, Rainer, Koppens, Frank H. L.

The science and applications of electronics and optoelectronics have been driven for decades by progress in growth of semiconducting heterostructures. Many applications in the infrared and terahertz frequency range exploit transitions between quantiz

Externí odkaz: http://arxiv.org/abs/1806.09519

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Dissertation/ Thesis

Theoretical studies of structural, electronic and optical properties of graphene based systems

Autor: Yelgel, Celal

The equilibrium atomic geometry, electronic properties, electronic orbital states, and optical properties of graphene and graphene based systems have been comprehensively investigated using the density functional theory (DFT) in the framework of plan

Externí odkaz: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.586686

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