Zobrazeno 1 - 10
of 206
pro vyhledávání: '"Roldán, Rafael"'
Autor:
Schuler, Bruno, Lee, Jun-Ho, Kastl, Christoph, Cochrane, Katherine A., Chen, Christopher T., Refaely-Abramson, Sivan, Yuan, Shengjun, van Veen, Edo, Roldán, Rafael, Borys, Nicholas J., Koch, Roland J., Aloni, Shaul, Schwartzberg, Adam M., Ogletree, D. Frank, Neaton, Jeffrey B., Weber-Bargioni, Alexander
Publikováno v:
ACS Nano 13, 10520 (2019)
Control of impurity concentrations in semiconducting materials is essential to device technology. Because of their intrinsic confinement, the properties of two-dimensional semiconductors such as transition metal dichalcogenides (TMDs) are more sensit
Externí odkaz:
http://arxiv.org/abs/2005.07466
Autor:
van Veen, Edo, Nemilentsau, Andrei, Kumar, Anshuman, Roldán, Rafael, Katsnelson, Mikhail I., Low, Tony, Yuan, Shengjun
Publikováno v:
Phys. Rev. Applied 12, 014011 (2019)
Black phosphorus presents a very anisotropic crystal structure, making it a potential candidate for hyperbolic plasmonics, characterized by a permittivity tensor where one of the principal components is metallic and the other dielectric. Here we demo
Externí odkaz:
http://arxiv.org/abs/1812.03062
Akademický článek
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Akademický článek
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Autor:
Slotman, Guus, Rudenko, Alexander, van Veen, Edo, Katsnelson, Mikhail I., Roldán, Rafael, Yuan, Shengjun
The collective excitation spectrum of two-dimensional (2D) antimonene is calculated beyond the low energy continuum approximation. The dynamical polarizability is computed using a 6-orbitals tight-binding model that properly accounts for the band str
Externí odkaz:
http://arxiv.org/abs/1809.09214
Publikováno v:
Phys. Rev. Materials 2, 114011 (2018)
A systematic study of the electronic properties of single layer Sb (antimonene) nanoribbons is presented. By using a 6-orbital tight-binding Hamiltonian, we study the electronic band structure of finite ribbons with zigzag or armchair termination. We
Externí odkaz:
http://arxiv.org/abs/1807.04597
Publikováno v:
Nature Photonics 11, 407-409 (2017)
Modern electronics rely on devices whose functionality can be adjusted by the end-user with an external 'knob'. A new tuning knob to modify the band gap of black phosphorus has been experimentally demonstrated.
Comment: News and Views article. P
Comment: News and Views article. P
Externí odkaz:
http://arxiv.org/abs/1711.05770
Publikováno v:
npj 2D Materials and Applications 2,15 (2018)
Conversion of mechanical forces to electric signal is possible in non-centrosymmetric materials due to linear piezoelectricity. The extraordinary mechanical properties of two-dimensional materials and their high crystallinity make them exceptional pl
Externí odkaz:
http://arxiv.org/abs/1707.03769
Autor:
Roldán, Rafael, Chirolli, Luca, Prada, Elsa, Silva-Guillén, Jose Angel, San-Jose, Pablo, Guinea, Francisco
Publikováno v:
Chem. Soc. Rev. 46, 4387 (2017)
This tutorial review presents an overview of the basic theoretical aspects of two-dimensional (2D) crystals. We revise essential aspects of graphene and the new families of semiconducting 2D materials, like transition metal dichalcogenides or black p
Externí odkaz:
http://arxiv.org/abs/1703.07200
Publikováno v:
Phys. Rev. B 95, 165301 (2017)
The band structures of single-layer MoS$_2$ and WS$_2$ present a coupling between spin and valley degrees of freedom that suppresses spin-flip scattering and spin dephasing. Here we show that out-of-plane deformations, such as corrugations or ripples
Externí odkaz:
http://arxiv.org/abs/1606.03339