Intrinsic helical twist and chirality in ultrathin tellurium nanowires

Alejandra Londoño-Calderon; Darrick J. Williams; Matthew M. Schneider; Benjamin H. Savitzky; Colin Ophus; Sijie Ma; Hanyu Zhu; Michael T. Pettes

doi:10.1039/d1nr01442k

Intrinsic helical twist and chirality in ultrathin tellurium nanowires

Alejandra Londoño-Calderon
, Darrick J. Williams
, Matthew M. Schneider
, Benjamin H. Savitzky
, Colin Ophus
, Sijie Ma
, Hanyu Zhu
, Michael T. Pettes

Los Alamos National Laboratory

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

36 Scopus citations

Abstract

Robust atomic-to-meso-scale chirality is now observed in the one-dimensional form of tellurium. This enables a large and counter-intuitive circular-polarization dependent second harmonic generation response above 0.2 which is not present in two-dimensional tellurium. Orientation variations in 1D tellurium nanowires obtained by four-dimensional scanning transmission electron microscopy (4D-STEM) and their correlation with unconventional non-linear optical properties by second harmonic generation circular dichroism (SHG-CD) uncovers an unexpected circular-polarization dependent SHG response from 1D nanowire bundles-an order-of-magnitude higher than in single-crystal two-dimensional tellurium structures-suggesting the atomic- and meso-scale crystalline structure of the 1D material possesses an inherent chirality not present in its 2D form; and which is strong enough to manifest even in the aggregate non-linear optical (NLO) properties of aggregates. This journal is

Original language	English
Pages (from-to)	9606-9614
Number of pages	9
Journal	Nanoscale
Volume	13
Issue number	21
DOIs	https://doi.org/10.1039/d1nr01442k
State	Published - Jun 7 2021

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title = "Intrinsic helical twist and chirality in ultrathin tellurium nanowires",

abstract = "Robust atomic-to-meso-scale chirality is now observed in the one-dimensional form of tellurium. This enables a large and counter-intuitive circular-polarization dependent second harmonic generation response above 0.2 which is not present in two-dimensional tellurium. Orientation variations in 1D tellurium nanowires obtained by four-dimensional scanning transmission electron microscopy (4D-STEM) and their correlation with unconventional non-linear optical properties by second harmonic generation circular dichroism (SHG-CD) uncovers an unexpected circular-polarization dependent SHG response from 1D nanowire bundles-an order-of-magnitude higher than in single-crystal two-dimensional tellurium structures-suggesting the atomic- and meso-scale crystalline structure of the 1D material possesses an inherent chirality not present in its 2D form; and which is strong enough to manifest even in the aggregate non-linear optical (NLO) properties of aggregates. This journal is ",

author = "Alejandra Londo{\~n}o-Calderon and Williams, \{Darrick J.\} and Schneider, \{Matthew M.\} and Savitzky, \{Benjamin H.\} and Colin Ophus and Sijie Ma and Hanyu Zhu and Pettes, \{Michael T.\}",

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doi = "10.1039/d1nr01442k",

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journal = "Nanoscale",

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AU - Londoño-Calderon, Alejandra

AU - Williams, Darrick J.

AU - Schneider, Matthew M.

AU - Savitzky, Benjamin H.

AU - Ophus, Colin

AU - Ma, Sijie

AU - Zhu, Hanyu

AU - Pettes, Michael T.

PY - 2021/6/7

Y1 - 2021/6/7

N2 - Robust atomic-to-meso-scale chirality is now observed in the one-dimensional form of tellurium. This enables a large and counter-intuitive circular-polarization dependent second harmonic generation response above 0.2 which is not present in two-dimensional tellurium. Orientation variations in 1D tellurium nanowires obtained by four-dimensional scanning transmission electron microscopy (4D-STEM) and their correlation with unconventional non-linear optical properties by second harmonic generation circular dichroism (SHG-CD) uncovers an unexpected circular-polarization dependent SHG response from 1D nanowire bundles-an order-of-magnitude higher than in single-crystal two-dimensional tellurium structures-suggesting the atomic- and meso-scale crystalline structure of the 1D material possesses an inherent chirality not present in its 2D form; and which is strong enough to manifest even in the aggregate non-linear optical (NLO) properties of aggregates. This journal is

AB - Robust atomic-to-meso-scale chirality is now observed in the one-dimensional form of tellurium. This enables a large and counter-intuitive circular-polarization dependent second harmonic generation response above 0.2 which is not present in two-dimensional tellurium. Orientation variations in 1D tellurium nanowires obtained by four-dimensional scanning transmission electron microscopy (4D-STEM) and their correlation with unconventional non-linear optical properties by second harmonic generation circular dichroism (SHG-CD) uncovers an unexpected circular-polarization dependent SHG response from 1D nanowire bundles-an order-of-magnitude higher than in single-crystal two-dimensional tellurium structures-suggesting the atomic- and meso-scale crystalline structure of the 1D material possesses an inherent chirality not present in its 2D form; and which is strong enough to manifest even in the aggregate non-linear optical (NLO) properties of aggregates. This journal is

UR - https://www.scopus.com/pages/publications/85107522178

U2 - 10.1039/d1nr01442k

DO - 10.1039/d1nr01442k

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VL - 13

SP - 9606

EP - 9614

JO - Nanoscale

JF - Nanoscale

IS - 21

ER -

Intrinsic helical twist and chirality in ultrathin tellurium nanowires

Abstract

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