Observation of bright exciton splitting in strained WSe2 monolayers

Mitioglu Anatolie; Buhot Jonathan; Ballottin Mariana; Anghel Sergiu; Sushkevich Konstantin; Kulyuk Leonid; Christianen Peter C.M.

Conţinutul numărului revistei

Articolul precedent

Articolul urmator

655

SM ISO690:2012

MITIOGLU, Anatolie, BUHOT, Jonathan, BALLOTTIN, Mariana, ANGHEL, Sergiu, SUSHKEVICH, Konstantin, KULYUK, Leonid, CHRISTIANEN, Peter C.M.. Observation of bright exciton splitting in strained WSe2 monolayers. In: Physical Review B, 2018, vol. 98, p. 0. ISSN 2469-9950. DOI: https://doi.org/10.1103/PhysRevB.98.235429

EXPORT metadate:
Google Scholar
Crossref
CERIF

DataCite
Dublin Core

Physical Review B

Volumul 98 / 2018 / ISSN 2469-9950 /ISSNe 2469-9969

Observation of bright exciton splitting in strained WSe2 monolayers

DOI:https://doi.org/10.1103/PhysRevB.98.235429

Pag. 0-0

Mitioglu Anatolie¹², Buhot Jonathan², Ballottin Mariana², Anghel Sergiu¹³, Sushkevich Konstantin⁴, Kulyuk Leonid¹, Christianen Peter C.M.²

¹ Institute of Applied Physics,
² Radboud University,
³ Technical University of Dortmund,
⁴ Moldova State University

Disponibil în IBN: 3 februarie 2019

Vezi articolul

Rezumat

High-resolution magnetophotoluminescence measurements of strained WSe2 monolayers are reported. At low temperature, a splitting of a few meV in the neutral exciton peak is observed, which is attributed to the theoretically predicted in-plane (xy) anisotropy splitting. Measurements in high magnetic fields up to 30 T demonstrate that strain and intervalley electron-hole exchange mix the valley-exciton energy levels, leading to a relaxation of the valley-selective optical selection rules and to strongly modified exciton g factors. Our observation of the bright exciton splitting provides crucial information about the dispersion of valley excitons and paves the way to develop valley functionality for photonic devices.

Cuvinte-cheie
Excitons, Landforms, Monolayers, Photonic devices, Selenium compounds, temperature

Dublin Core Export

<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'>
<dc:creator>Mitioglu, A.A.</dc:creator>
<dc:creator>Buhot, J.</dc:creator>
<dc:creator>Ballottin, M.</dc:creator>
<dc:creator>Anghel, S.S.</dc:creator>
<dc:creator>Suşchevici, C.D.</dc:creator>
<dc:creator>Culiuc, L.L.</dc:creator>
<dc:creator>Christianen, P.</dc:creator>
<dc:date>2018-12-26</dc:date>
<dc:description xml:lang='en'><p>High-resolution magnetophotoluminescence measurements of strained WSe2 monolayers are reported. At low temperature, a splitting of a few meV in the neutral exciton peak is observed, which is attributed to the theoretically predicted in-plane (xy) anisotropy splitting. Measurements in high magnetic fields up to 30 T demonstrate that strain and intervalley electron-hole exchange mix the valley-exciton energy levels, leading to a relaxation of the valley-selective optical selection rules and to strongly modified exciton g factors. Our observation of the bright exciton splitting provides crucial information about the dispersion of valley excitons and paves the way to develop valley functionality for photonic devices.</p></dc:description>
<dc:identifier>10.1103/PhysRevB.98.235429</dc:identifier>
<dc:source>Physical Review B  () 0-0</dc:source>
<dc:subject>Excitons</dc:subject>
<dc:subject>Landforms</dc:subject>
<dc:subject>Monolayers</dc:subject>
<dc:subject>Photonic devices</dc:subject>
<dc:subject>Selenium compounds</dc:subject>
<dc:subject>temperature</dc:subject>
<dc:title>Observation of bright exciton splitting in strained WSe2 monolayers</dc:title>
<dc:type>info:eu-repo/semantics/article</dc:type>
</oai_dc:dc>