Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Malard, Leandro M."'
Autor:
Lafeta, Lucas, Hartmann, Sean, Rosa, Bárbara, Reitzenstein, Stephan, Malard, Leandro M., Hartschuh, Achim
The controlled assembly of twisted 2D structures requires precise determination of the crystal orientation of their component layers. In the established procedure, the second-harmonic generation (SHG) intensity of a noncentrosymmetric layer is record
Externí odkaz:
http://arxiv.org/abs/2409.02071
Autor:
Sousa, Frederico B., Ames, Alessandra, Liu, Mingzu, Gastelois, Pedro L., Oliveira, Vinícius A., Zhou, Da, Matos, Matheus J. S., Chacham, Helio, Terrones, Mauricio, Teodoro, Marcio D., Malard, Leandro M.
Transition metal dichalcogenide (TMD) monolayers present a singular coupling in their spin and valley degrees of freedom. Moreover, by applying an external magnetic field it is possible to break the energy degeneracy between their K and $-$K valleys.
Externí odkaz:
http://arxiv.org/abs/2404.04131
Autor:
Sousa, Frederico B., Nadas, Rafael Battistella, Martins, Rafael, Barboza, Ana P. M., Soares, Jaqueline S., Neves, Bernardo R. A., Silvestre, Ive, Jorio, Ado, Malard, Leandro M.
The role of defects in two-dimensional semiconductors and how they affect the intrinsic properties of these materials have been a wide researched topic over the past decades. Optical characterization such as photoluminescence and Raman spectroscopies
Externí odkaz:
http://arxiv.org/abs/2401.11984
Autor:
Palekar, Chirag C., Junior, Paulo E. Faria, Rosa, Barbara, Sousa, Frederico B., Malard, Leandro M., Fabian, Jaroslav, Reitzenstein, Stephan
Transition metal dichalcogenide (TMDC) heterostructures have unique properties that depend on the twisting angle and stacking order of two or more monolayers. However, their practical applications are limited by the low photoluminescence yield of int
Externí odkaz:
http://arxiv.org/abs/2311.02509
Publikováno v:
The Journal of Physical Chemistry C 2023 127 (41), 20438-20444
In this work we investigate the role of exciton resonances in coherent anti-Stokes Raman scattering (er-CARS) in single walled carbon nanotubes (SWCNTs). We drive the nanotube system in simultaneous phonon and excitonic resonances, where we observe a
Externí odkaz:
http://arxiv.org/abs/2305.04029
Autor:
Sousa, Frederico B., Lafeta, Lucas, Cadore, Alisson R., Sahoo, Prasana K., Malard, Leandro M.
Publikováno v:
2D Mater. 8 035051 (2021)
The interface between two different semiconductors is crucial in determining the electronic properties at the heterojunction, therefore novel techniques that can probe these regions are of particular interest. Recently it has been shown that heteroju
Externí odkaz:
http://arxiv.org/abs/2108.04646
Autor:
Cunha, Renan, Lafeta, Lucas, Fonseca, Emerson A., Barbosa, Alexandre, Romano-Silva, Marco A., Vieira, Rafael, Jorio, Ado, Malard, Leandro M.
Publikováno v:
Analyst, 2021,146, 2945-2954
Given the long subclinical stage of Alzheimer's disease (AD), the study of biomarkers is relevant both for early diagnosis and the fundamental understanding of the pathophysiology of AD. Biomarkers provided by amyloid-${\unicode[Times]{x3B2}}$ (A${\u
Externí odkaz:
http://arxiv.org/abs/2102.03993
Autor:
Lafeta, Lucas, Corradi, Aurea, Zhang, Tianyi, Kahn, Ethan, Bilgin, Ismail, Carvalho, Bruno R., Kar, Swastik, Terrones, Mauricio, Malard, Leandro M.
Publikováno v:
2D Mater. 8 035010 (2021)
Semiconducting Transition Metal Dichalcogenides (TMDs) have significant nonlinear optical effects. In this work we have used second-harmonic generation (SHG) and the four-wave mixing (FWM) spectroscopy in resonance with the excitons in MoS2, MoSe2, a
Externí odkaz:
http://arxiv.org/abs/2101.10319
Autor:
Gadelha, Andreij C., Cadore, Alisson R., Watanabe, Kenji, Tanigushi, Takashi, de Paula, Ana M., Malard, Leandro M., Lacerda, Rodrigo G., Campos, Leonardo C.
Publikováno v:
2D Mater. 6 025036 (2019)
Non-volatile memory devices have been limited to flash architectures that are complex devices. Here, we present a unique photomemory effect in MoS$_2$ transistors. The photomemory is based on a photodoping effect - a controlled way of manipulating th
Externí odkaz:
http://arxiv.org/abs/2006.09986
Autor:
Gadelha, Andreij C., Cadore, Alisson R., Lafeta, Lucas, de Paula, Ana M., Malard, Leandro M., Lacerda, Rodrigo G., Campos, Leonardo C.
Publikováno v:
Nanotechnology 31 255701 (2020)
Inducing electrostatic doping in 2D materials by laser exposure (photodoping effect) is an exciting route to tune optoelectronic phenomena. However, there is a lack of investigation concerning in what respect the action of photodoping in optoelectron
Externí odkaz:
http://arxiv.org/abs/2006.09513