Triple VTe2/graphene/VTe2 heterostructures as perspective magnetic tunnel junctions | Научно-инновационный портал СФУ

Triple VTe2/graphene/VTe2 heterostructures as perspective magnetic tunnel junctions

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1016/j.apsusc.2020.145315

Ключевые слова: Density functional theory, Graphene, Magnetic tunnel junction, Transition metal dichalcogenides, Vanadium ditelluride monolayer

Аннотация: New perspective 1.4 nm thick spin-polarized triple heterostructures based on graphene sandwiched between two vanadium ditelluride monolayers (VTe2/graphene/VTe2) were studied using ab initio DFT technique. Both possible trigonal prismatic (H-VTe2) and octahedral (T-VTe2) VTe2 phases were considered to design and study graphene-based heterostructures. It was shown that the interaction with graphene changes the electronic structure of 2D T-VTe2 from metallic to half-metallic, making T phase perspective to be used for magnetic tunnel junctions. The electronic subsystem of graphene fragment is slightly hole doped. Calculated tunnel magnetoresistance ratio for the favorable heterostructure configuration estimated within the Julliere model is 220%, which opens a way to use VTe2/graphene/VTe2 as prospective magnetic tunnel junction in novel spintronic nanodevices based on tunnel magnetic resistance and spin transfer torque effects. © 2020 Elsevier B.V.

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Издание

Журнал: Applied Surface Science

Выпуск журнала: Vol. 510

Номера страниц: 145315

ISSN журнала: 01694332

Издатель: Elsevier B.V.

Авторы

  • Begunovich Lyudmila (Siberian Fed Univ, 79 Svobodny Av, Krasnoyarsk 660041, Russia)
  • Kuklin Artem (Siberian Fed Univ, 79 Svobodny Av, Krasnoyarsk 660041, Russia; Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Dept Theoret Chem & Biol, SE-10691 Stockholm, Sweden)
  • Visotin Maxim A. (Siberian Fed Univ, 79 Svobodny Av, Krasnoyarsk 660041, Russia; Kirensky Inst Phys SB RAS, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia)
  • Kuzubov Alexander A.
  • Tomilin Felix N. (Siberian Fed Univ, 79 Svobodny Av, Krasnoyarsk 660041, Russia; Kirensky Inst Phys SB RAS, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia)
  • Tarasov Anton S. (Siberian Fed Univ, 79 Svobodny Av, Krasnoyarsk 660041, Russia; Kirensky Inst Phys SB RAS, 50-38 Akademgorodok, Krasnoyarsk 660036, Russia)
  • Mikhalev Yuri G. (Siberian Fed Univ, 79 Svobodny Av, Krasnoyarsk 660041, Russia)
  • Avramov Pavel (Kyungpook Natl Univ, Dept Chem, 80 Daehakro, Daegu 41566, South Korea)

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