Spin-polarized current in field-effect transistors made of magnetic polymers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F25%3A00627754" target="_blank" >RIV/61389013:_____/25:00627754 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.aip.org/aip/jap/article/137/20/205502/3347553/Spin-polarized-current-in-field-effect-transistors" target="_blank" >https://pubs.aip.org/aip/jap/article/137/20/205502/3347553/Spin-polarized-current-in-field-effect-transistors</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0252581" target="_blank" >10.1063/5.0252581</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spin-polarized current in field-effect transistors made of magnetic polymers

Popis výsledku v původním jazyce

This study theoretically explores the spin-polarized current ratio, conductivity, and spin moments in multilayered polymer field-effect transistors. Respective layers are formed by dimerized backbones with repeat units coupled to magnetic side-groups. We show that within a small interval of the gate voltage, a considerable formation of the non-zero spin-polarized current ratio is formed together with a considerable decrease of the current. We demonstrate that this phenomenon is correlated with the formation of an alternating (ferrimagnetic) spin alignment, resulting in a net spin moment, controlled by interaction couplings, such as electron–phonon, magnetic coupling, and intra-site Coulomb (Hubbard) interaction. We demonstrated that by tuning the Fermi energy of respective chains with an applied gate voltage, the spin polarization of the current can change its sign, with no change of the orientation of the total spin. These findings provide insights for optimizing the spin-polarized current ratio through gate voltage modulation and interaction couplings, offering potential applications in spintronic device design.

Název v anglickém jazyce

Spin-polarized current in field-effect transistors made of magnetic polymers

Popis výsledku anglicky

This study theoretically explores the spin-polarized current ratio, conductivity, and spin moments in multilayered polymer field-effect transistors. Respective layers are formed by dimerized backbones with repeat units coupled to magnetic side-groups. We show that within a small interval of the gate voltage, a considerable formation of the non-zero spin-polarized current ratio is formed together with a considerable decrease of the current. We demonstrate that this phenomenon is correlated with the formation of an alternating (ferrimagnetic) spin alignment, resulting in a net spin moment, controlled by interaction couplings, such as electron–phonon, magnetic coupling, and intra-site Coulomb (Hubbard) interaction. We demonstrated that by tuning the Fermi energy of respective chains with an applied gate voltage, the spin polarization of the current can change its sign, with no change of the orientation of the total spin. These findings provide insights for optimizing the spin-polarized current ratio through gate voltage modulation and interaction couplings, offering potential applications in spintronic device design.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/LUAUS24032" target="_blank" >LUAUS24032: Polymerní neuronové synapse</a><br>

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

Journal of Applied Physics

ISSN

0021-8979

e-ISSN

1089-7550

Svazek periodika

137

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

205502

Kód UT WoS článku

001496646800012

EID výsledku v databázi Scopus

2-s2.0-105006616255