Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Leandro R. F. Lima"'
Autor:
Leandro R. F. Lima, Caio Lewenkopf
We study the suppression of the conductance quantization in quantum spin Hall systems by a combined effect of electronic interactions and edge disorder, that is ubiquitous in exfoliated and CVD grown 2D materials. We show that the interplay between t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be47dc9cabff5d15fc4dd11c1950a23d
http://arxiv.org/abs/2210.03846
http://arxiv.org/abs/2210.03846
Autor:
Leandro R. F. Lima, Caio Lewenkopf
We study the equilibrium and nonequilibrium electronic transport properties of multiprobe topological systems using a combination of the Landauer-B\"uttiker approach and nonequilibrium Green's functions techniques. We obtain general expressions for b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f1030e1fbe382e53af2c33a96cbcc60
http://arxiv.org/abs/2104.07206
http://arxiv.org/abs/2104.07206
Publikováno v:
Physical Review B. 101
Previous works on deformed graphene predict the existence of valley-polarized states, however, optimal conditions for their detection remain challenging. We show that in the quantum Hall regime, edgelike states in strained regions can be isolated in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c9983b72ece8e0b6cc6828a3e137842
https://doi.org/10.1103/physrevb.101.081410
https://doi.org/10.1103/physrevb.101.081410
Autor:
Patricio Vargas, Leandro R. F. Lima, Ning Ma, Francisco J. Peña, Mario S. Reis, Oscar Negrete
Publikováno v:
Physica B: Condensed Matter. 627:413521
We theoretically study the thermoelectric transport properties of strained HgTe in the topological insulator phase. We developed a model for the system using a Dirac Hamiltonian including the effect of strain induced by the interface between HgTe and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::120d280eb3c9b3b5aaa3e1e8f20f7f77
https://doi.org/10.1016/j.physb.2021.413521
https://doi.org/10.1016/j.physb.2021.413521
Publikováno v:
Physical Review B. 98
In this paper, we present a method to numerically study transverse Hall voltages using an alternative quantity in two-terminal setups. Using nonlinear transport concepts, we find that the Hall voltage dependence on the model parameters can be investi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f473ef2a5c78869954554389235575b
https://doi.org/10.1103/physrevb.98.115404
https://doi.org/10.1103/physrevb.98.115404
We present a self-contained description of the wave-function matching (WFM) method to calculate electronic quantum transport properties of nanostructures using the Landauer-B\"uttiker approach. The method is based on a partition of the system between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73bb72eacc78b5b7e36bad287cb54bc3
We present a multiprobe recursive Green's function method to compute the transport properties of mesoscopic systems using the Landauer-B\"uttiker approach. By introducing an adaptive partition scheme, we map the multiprobe problem into the standard t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::486a9e01dc9b6efbdc331df5ed615c1c
Inverted HgTe/CdTe quantum wells have been used as a platform for the realization of 2D topological insulators, bulk insulator materials with spin-helical metallic edges states protected by time-reversal symmetry. This work investigates the spectrum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7bc98478400c7d1bb08d9776f54c02fe
http://arxiv.org/abs/1707.03624
http://arxiv.org/abs/1707.03624
We study the heat transport due to phonons in nanomechanical structures using a phase space representation of non-equilibrium Green's functions. This representation accounts for the atomic degrees of freedom making it particularly suited for the desc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a48966265c9447aaaf0d481c081df9be
http://arxiv.org/abs/1701.02779
http://arxiv.org/abs/1701.02779
Based on the investigation of the multi-terminal conductance of a system composed of two graphene nanoribbons, in which one is on top of the other and rotated by 60 degrees, we propose a setup for a 50/50 electronic beam splitter that neither require
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85cf2b1a822767245aa879f05f32b1f0