Detection of the Biexciton of Monolayer WS2 in Ellipsometric Data: A Maximum-Entropy Success

Long V. Le; Tae Jung Kim; Young Dong Kim; David E. Aspnes

doi:10.1002/pssb.202200271

Detection of the Biexciton of Monolayer WS₂ in Ellipsometric Data: A Maximum-Entropy Success

Long V. Le, Tae Jung Kim, Young Dong Kim, David E. Aspnes

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

For nearly 50 years, the Burg/Andersen (BA) maximum-entropy (ME) deconvolution procedure has been used to sharpen, and therefore accentuate, weak features in spectra, optical and otherwise. It is shown that the BA procedure can be further enhanced to yield even sharper features. Using this approach, the authors establish the existence of the biexciton in ellipsometric data of monolayer WS₂ at 50 K, whereas differentiation and standard BA analysis cannot.

Original language	English
Article number	2200271
Journal	Physica Status Solidi (B): Basic Research
Volume	260
Issue number	5
DOIs	https://doi.org/10.1002/pssb.202200271
Publication status	Published - May 2023

Bibliographical note

Publisher Copyright:
© 2022 Wiley-VCH GmbH.

Keywords

Burg/Andersen
Fourier analysis
biexciton
deconvolution
maximum-entropy
monolayer WS

Access to Document

10.1002/pssb.202200271

Cite this

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title = "Detection of the Biexciton of Monolayer WS2 in Ellipsometric Data: A Maximum-Entropy Success",

abstract = "For nearly 50 years, the Burg/Andersen (BA) maximum-entropy (ME) deconvolution procedure has been used to sharpen, and therefore accentuate, weak features in spectra, optical and otherwise. It is shown that the BA procedure can be further enhanced to yield even sharper features. Using this approach, the authors establish the existence of the biexciton in ellipsometric data of monolayer WS2 at 50 K, whereas differentiation and standard BA analysis cannot.",

keywords = "Burg/Andersen, Fourier analysis, biexciton, deconvolution, maximum-entropy, monolayer WS",

author = "Le, {Long V.} and Kim, {Tae Jung} and Kim, {Young Dong} and Aspnes, {David E.}",

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T1 - Detection of the Biexciton of Monolayer WS2 in Ellipsometric Data

T2 - A Maximum-Entropy Success

AU - Le, Long V.

AU - Kim, Tae Jung

AU - Kim, Young Dong

AU - Aspnes, David E.

PY - 2023/5

Y1 - 2023/5

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AB - For nearly 50 years, the Burg/Andersen (BA) maximum-entropy (ME) deconvolution procedure has been used to sharpen, and therefore accentuate, weak features in spectra, optical and otherwise. It is shown that the BA procedure can be further enhanced to yield even sharper features. Using this approach, the authors establish the existence of the biexciton in ellipsometric data of monolayer WS2 at 50 K, whereas differentiation and standard BA analysis cannot.

KW - Burg/Andersen

KW - Fourier analysis

KW - biexciton

KW - deconvolution

KW - maximum-entropy

KW - monolayer WS

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DO - 10.1002/pssb.202200271

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JO - Physica Status Solidi (B): Basic Research

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