Zobrazeno 1 - 10
of 183
pro vyhledávání: '"Belashchenko K. D."'
Autor:
Belashchenko, K. D.
Hexagonal MnTe is an altermagnetic semiconductor with $g$-wave symmetry of spin polarization in momentum space. In the nonrelativistic limit, this symmetry mandates that electric current flowing in any crystallographic direction is unpolarized. Howev
Externí odkaz:
http://arxiv.org/abs/2407.20440
Autor:
Mazin, I. I., Belashchenko, K. D.
Absence of net magnetization in altermagnetis is both a blessing (no stray fields) and a curse (no obvious way to manipulate altermagnetic domains by external fields). Yet, MnTe was demonstrated experimentally to have no measurable stray fields and y
Externí odkaz:
http://arxiv.org/abs/2407.14389
The minority-spin Fe/MgO interface states are at the Fermi level in density functional theory (DFT), but experimental evidence and GW calculations place them slightly higher in energy. This small shift can strongly influence tunneling magnetoresistan
Externí odkaz:
http://arxiv.org/abs/2404.08103
Spin-orbit torques in ferromagnet/nonmagnet/ferromagnet trilayers are studied using a combination of symmetry analysis, circuit theory, semiclassical simulations, and first-principles calculations using the non-equilibrium Green's function method wit
Externí odkaz:
http://arxiv.org/abs/2312.04538
Autor:
Belashchenko, K. D.
Publikováno v:
Phys. Rev. B 109, 054409 (2024)
Crystallographic anisotropy of the spin-dependent conductivity tensor can be exploited to generate transverse spin-polarized current in a ferromagnetic film. This ferromagnetic spin Hall effect is analogous to the spin-splitting effect in altermagnet
Externí odkaz:
http://arxiv.org/abs/2310.13688
Autor:
Belashchenko, K. D., Flores, G. G. Baez, Fang, W., Kovalev, A. A., van Schilfgaarde, M., Haney, P. M., Stiles, M. D.
Publikováno v:
Phys. Rev. B 108, 144433 (2023)
Spin accumulation and spin current profiles are calculated for a disordered Pt film subjected to an in-plane electric current within the nonequilibrium Green function approach. In the bulklike region of the sample, this approach captures the intrinsi
Externí odkaz:
http://arxiv.org/abs/2309.00183
Publikováno v:
Phys. Rev. B 109, 174509 (2024)
Phonon-driven $s$-wave superconductivity is fundamentally antagonistic to uniform magnetism, and field-induced suppression of the critical temperature is one of its canonical signatures. Examples of the opposite are unique and require fortuitous canc
Externí odkaz:
http://arxiv.org/abs/2306.01700
Publikováno v:
Phys. Rev. B 105, 054405 (2022)
Using the first-principles non-equilibrium Green's function technique with supercell disorder averaging, we study the influence of interfacial intermixing on the spin-orbit torque in Co$\mid$Pt bilayers. Intermixing is modeled by inserting one or mor
Externí odkaz:
http://arxiv.org/abs/2111.12178
Autor:
Fang, Wuzhang, Belashchenko, K. D.
Publikováno v:
Phys. Rev. B 105, 064412 (2022)
Using the non-equilibrium Green's function technique, we calculate spin-orbit torques in a Mn$_2$Au/heavy-metal bilayer, where the heavy metal (HM) is W or Pt. Spin-orbit coupling (SOC) in the bulk of Mn$_2$Au generates strong fieldlike torquance, wh
Externí odkaz:
http://arxiv.org/abs/2111.07532
Publikováno v:
Phys. Rev. Materials 5, 054406 (2021)
The magnetic anisotropy in MgO-capped MnPt films and its voltage control are studied using first-principles calculations. Sharp variation of the magnetic anisotropy with film thickness, especially in the Pt-terminated film, suggests that it may be wi
Externí odkaz:
http://arxiv.org/abs/2008.03249