Bosonic charge carriers in necklace-like graphene nanoribbons

Pereira Júnior, Marcelo Lopes; Silva, Geraldo Magela e; Ribeiro Júnior, Luiz Antônio

Registro completo de metadatos

Campo DC	Valor	Lengua/Idioma
dc.contributor.author	Pereira Júnior, Marcelo Lopes	-
dc.contributor.author	Silva, Geraldo Magela e	-
dc.contributor.author	Ribeiro Júnior, Luiz Antônio	-
dc.date.accessioned	2022-07-07T11:43:45Z	-
dc.date.available	2022-07-07T11:43:45Z	-
dc.date.issued	2020	-
dc.identifier.citation	PEREIRA JÚNIOR, Marcelo L.; SILVA, Geraldo M. e; RIBEIRO JUNIOR, Luiz A. Bosonic charge carriers in necklace-like graphene nanoribbons. The Journal of Physical Chemistry Letters, v. 11, n. 14, p. 5538-5543, 2020. DOI: 10.1021/acs.jpclett.0c01489.	pt_BR
dc.identifier.uri	https://repositorio.unb.br/handle/10482/44141	-
dc.language.iso	Inglês	pt_BR
dc.publisher	ACS Publications	pt_BR
dc.rights	Acesso Restrito	pt_BR
dc.title	Bosonic charge carriers in necklace-like graphene nanoribbons	pt_BR
dc.type	Artigo	pt_BR
dc.subject.keyword	Condutividade elétrica	pt_BR
dc.subject.keyword	Treliças	pt_BR
dc.subject.keyword	Polaron	pt_BR
dc.subject.keyword	Quasipartículas e excitações	pt_BR
dc.subject.keyword	Materiais bidimensionais	pt_BR
dc.identifier.doi	10.1021/acs.jpclett.0c01489	pt_BR
dc.description.abstract1	Motivated by the success of graphene in flat optoelectronics, several carbon allotropes have recently been proposed. One of these allotropes, graphene nanoribbons (GNRs) with a singular “necklace-like” atomic structure, was recently synthesized through a bottom-up chemical approach. The absorption spectrum exhibited a band gap of 1.4 eV for this novel GNR geometry. Guided by its exciting electronic and structural properties, investigations should be performed to outline the major features of this material focused on expanding organic-based energy conversion and storage applications. In particular, the formation and dynamics of charge carriers are crucial in defining the material’s performance. Here we describe the formation and transport of charge carriers in necklacelike graphene nanoribbons (NGNRs). A 2D tight-binding Hamiltonian endowed with lattice relaxation effects constitutes the basis of the theoretical approach employed to examine the carrier formation and dynamics in these lattices. Results demonstrate that polarons and effective boson species are spontaneously generated in NGNRs by the addition of holes or electrons to the system. Both types of generated quasiparticles are dynamically stable and can move at surprisingly low electric-field regimes. Remarkably, the formation of effective bosons is a process triggered by a higher density of added charges. The understanding of the carriers’ formation and transport in NGNRs can pave the way for their broad usage in producing novel optoelectronic applications, added to the possibility of Bose−Einstein condensate phenomena.	pt_BR
Aparece en las colecciones:	Artigos publicados em periódicos e afins