Pt@WS2 -an Extrinsic 2D Dilute Ferromagnetic Semiconductor Beyond Room Temperature
Status PubMed-not-MEDLINE Jazyk angličtina Země Německo Médium print-electronic
Typ dokumentu časopisecké články
Grantová podpora
AS-GCS-112-M04 (YH)
Academia Sinica
113-2124-M-001-010-(YH)
Ministry of Science and Technology, Taiwan
113-2124-M-002-011-MY3
Ministry of Science and Technology, Taiwan
National Taiwan University Excellence Research Program Core Consortiums
PubMed
39300866
DOI
10.1002/smtd.202400955
Knihovny.cz E-zdroje
- Klíčová slova
- 2D material, dilute, doping process, magnetic, semiconductor,
- Publikační typ
- časopisecké články MeSH
Extrinsic dilute magnetic semiconductors achieve magnetic functionality through tailored interaction between a semiconducting matrix and a non-magnetic dopant. The absence of intrinsic magnetic impurities makes this approach promising to investigate the newly emerging field of 2D dilute magnetic semiconductors. Here the first realization of an extrinsic 2D DMS in Pt-doped WS2 is demonstrated. A bottom-up synthesis approach yields a uniform and highly crystalline monolayer where platinum selectively occupies the tungsten sub-lattice. The orbital overlap between W 4d and Pt 5d results in spin-selective hybrid states that produce a strong valley-Zeeman splitting. Combined experimental and theoretical results show that this interaction yields a sizable ferromagnetic response with a Curie temperature ≈375 K. These results open up a new route toward 2D magnetic properties through tailoring of atomic interactions for future applications in spintronics and magnetic nanoactuation.
Department of Physics National Taiwan Normal University Taipei 10617 Taiwan
Department of Physics National Taiwan University Taipei 10617 Taiwan
Institute of Atomic and Molecular Sciences Academia Sinica Taipei 10617 Taiwan
Physics Division National Center of Theoretical Sciences Taipei 10617 Taiwan
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