DataVXACS NanoPaper
journal article·2015-04-28

Unusual Angular Dependence of the Raman Response in Black Phosphorus

Henrique B. Ribeiro, Marcos A. Pimenta, Christiano J. S. de Matos, Roberto Luiz Moreira, Aleksandr S. Rodin, Juan D. Zapata, Eunézio A. T. de Souza, Antonio H. Castro Neto

ACS Nano· Volume 9· Issue 4
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Source abstract

Abstract

Anisotropic materials are characterized by a unique optical response, which is highly polarization-dependent. Of particular interest are layered materials formed by the stacking of two-dimensional (2D) crystals that are naturally anisotropic in the direction perpendicular to the 2D planes. Black phosphorus (BP) is a stack of 2D phosphorene crystals and a highly anisotropic semiconductor with a direct band gap. We show that the angular dependence of polarized Raman spectra of BP is rather unusual and can be explained only by considering complex values for the Raman tensor elements. This result can be traced back to the electron-photon and electron-phonon interactions in this material.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: 2D Materials and Applications · Perovskite Materials and Applications · MXene and MAX Phase Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Mackgraphe-Graphene and Nanomaterials Research Center, Mackenzie Presbyterian University, 01302-907 São Paulo, Brazil

Departamento de Física, UFMG, 30123-970 Belo Horizonte, Brazil

Centre for Advanced 2D Materials and Graphene Research Centre Faculty of Science, National University of Singapore, 119077 Singapore

Universidad de Antioquia, Medellin Colombia

Department of Physics Faculty of Science, National University of Singapore, 119077 Singapore

National Graduate School for Integrative Sciences & Engineering, National University of Singapore, 119077 Singapore

Funding

Universidad de Antioquia · Fundação de Amparo à Pesquisa do Estado de São Paulo · National Research Foundation-Prime Minister's office, Republic of Singapore · Brazilian Nanocarbon Institute of Science and Technology · Conselho Nacional de Desenvolvimento Científico e Tecnológico

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