Proximity-Driven Non-Volatile Spin and Valley Control in a Van Der Waals Antiferromagnetic Heterostructure

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43933863" target="_blank" >RIV/60461373:22310/25:43933863 - isvavai.cz</a>

Výsledek na webu

<a href="https://advanced.onlinelibrary.wiley.com/doi/10.1002/adma.202515464" target="_blank" >https://advanced.onlinelibrary.wiley.com/doi/10.1002/adma.202515464</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adma.202515464" target="_blank" >10.1002/adma.202515464</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Proximity-Driven Non-Volatile Spin and Valley Control in a Van Der Waals Antiferromagnetic Heterostructure

Popis výsledku v původním jazyce

The integration of non-volatile spin and valley control in 2D quantum systems remains a pivotal challenge for spintronic and valleytronic functionalities. Here, we demonstrate persistent spin and valley polarizations in a van der Waals heterostructure comprising bulk antiferromagnetic CrPS4 and monolayer MoSe2, achieved via interfacial magnetic proximity effects. The 1L-MoSe2/bulk-CrPS4 heterostructure exhibits non-volatile hysteresis in chiral photoluminescence (PL), directly linked to the antiferromagnetic ordering of bulk-CrPS4. This helicity of PL persists at zero field, enabled by the spin-polarized charge transfer from the K valley in the MoSe2 monolayer to the conduction band of CrPS4, breaking the valley degeneracy without external stimuli. Remarkably, the PL helicity switches surprisingly at a magnetic field of similar to 0.5 T, a 17-fold smaller than the spin-flip field of similar to 8.5 T in bulk CrPS4. Our work establishes bulk antiferromagnet-based heterostructure as a robust platform for low-energy, magnetically tunable quantum devices, bridging the gap between the transient valleytronic phenomena and practical non-volatile applications.

Název v anglickém jazyce

Proximity-Driven Non-Volatile Spin and Valley Control in a Van Der Waals Antiferromagnetic Heterostructure

Popis výsledku anglicky

The integration of non-volatile spin and valley control in 2D quantum systems remains a pivotal challenge for spintronic and valleytronic functionalities. Here, we demonstrate persistent spin and valley polarizations in a van der Waals heterostructure comprising bulk antiferromagnetic CrPS4 and monolayer MoSe2, achieved via interfacial magnetic proximity effects. The 1L-MoSe2/bulk-CrPS4 heterostructure exhibits non-volatile hysteresis in chiral photoluminescence (PL), directly linked to the antiferromagnetic ordering of bulk-CrPS4. This helicity of PL persists at zero field, enabled by the spin-polarized charge transfer from the K valley in the MoSe2 monolayer to the conduction band of CrPS4, breaking the valley degeneracy without external stimuli. Remarkably, the PL helicity switches surprisingly at a magnetic field of similar to 0.5 T, a 17-fold smaller than the spin-flip field of similar to 8.5 T in bulk CrPS4. Our work establishes bulk antiferromagnet-based heterostructure as a robust platform for low-energy, magnetically tunable quantum devices, bridging the gap between the transient valleytronic phenomena and practical non-volatile applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10400 - Chemical sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

ADVANCED MATERIALS

ISSN

0935-9648

e-ISSN

1521-4095

Svazek periodika

38

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

"e15464"

Kód UT WoS článku

001649052300001

EID výsledku v databázi Scopus

2-s2.0-105026086580