Signature of Ultrafast Formation and Annihilation of Polaronic States in a Layered Ferromagnet

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924194" target="_blank" >RIV/60461373:22310/22:43924194 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/full/10.1021/acs.nanolett.2c01771" target="_blank" >https://pubs.acs.org/doi/full/10.1021/acs.nanolett.2c01771</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.nanolett.2c01771" target="_blank" >10.1021/acs.nanolett.2c01771</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Signature of Ultrafast Formation and Annihilation of Polaronic States in a Layered Ferromagnet

Popis výsledku v původním jazyce

The strong interaction between charge and lattice vibration gives rise to a polaron, which has a profound effect on optical and transport properties of matters. In magnetic materials, polarons are involved in spin dependent transport, which can be potentially tailored for spintronic and opto-spintronic device applications. Here, we identify the signature of ultrafast formation of polaronic states in CrBr3. The polaronic states are long-lived, having a lifetime on the time scale of nanoseconds to microseconds, which coincides with the emission lifetime of ∼4.3 μs. Transition of the polaronic states is strongly screened by the phonon, generating a redshift of the transition energy ∼0.2 eV. Moreover, energy-dependent localization of polaronic states is discovered followed by transport/annihilation properties. These results shed light on the nature of the polarons and their formation and transport dynamics in layered magnetic materials, which paves the way for the rational design of two-dimensional magnetic devices. © 2022 American Chemical Society. All rights reserved.

Název v anglickém jazyce

Signature of Ultrafast Formation and Annihilation of Polaronic States in a Layered Ferromagnet

Popis výsledku anglicky

The strong interaction between charge and lattice vibration gives rise to a polaron, which has a profound effect on optical and transport properties of matters. In magnetic materials, polarons are involved in spin dependent transport, which can be potentially tailored for spintronic and opto-spintronic device applications. Here, we identify the signature of ultrafast formation of polaronic states in CrBr3. The polaronic states are long-lived, having a lifetime on the time scale of nanoseconds to microseconds, which coincides with the emission lifetime of ∼4.3 μs. Transition of the polaronic states is strongly screened by the phonon, generating a redshift of the transition energy ∼0.2 eV. Moreover, energy-dependent localization of polaronic states is discovered followed by transport/annihilation properties. These results shed light on the nature of the polarons and their formation and transport dynamics in layered magnetic materials, which paves the way for the rational design of two-dimensional magnetic devices. © 2022 American Chemical Society. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/LTAUSA19034" target="_blank" >LTAUSA19034: Dvoudimenzionální nanomateriály pro aplikace v elektronice</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

NANO LETTERS

ISSN

1530-6984

e-ISSN

1530-6992

Svazek periodika

22

Číslo periodika v rámci svazku

19

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

7784-7790

Kód UT WoS článku

000862967100001

EID výsledku v databázi Scopus

2-s2.0-85138963604