Institute of Physics of Materials AS CR, v. v. i. > Projects > Topical problems in theory of manipulation of spin polarization in bulk and layered systems

Topical problems in theory of manipulation of spin polarization in bulk and layered systems

Investigatordoc. RNDr. Ilja Turek, DrSc.
Number of Project18-07172S
AgencyGrantová agentura České republiky
Duration2018-01-01 - 2020-12-31

Anotace
Present trends in magnetism of solids and nanostructures call for novel techniques of manipulation of spin polarization which avoid the traditional application of external magnetic fields. This proposal is focused on theoretical investigation of phenomena and systems yielding alternative routes in this direction. We will study mechanisms leading to spin accumulation in nonmagnetic solids and to spin currents and spin torques in ferro- and ferrimagnets. Our effort will be focused on phenomena related to spin-orbit interaction (spin Hall and Nernst effects, spin-orbit torques) and to spin dynamics on a femtosecond scale (response of magnetization to short laser pulses). We will develop the relevant ab initio theory, which will be applied to complex bulk solids, layered structures and magnetic domain walls. Special attention will be paid to realistic systems with substitutional randomness. We will also provide detailed analysis of individual contributions to the resulting properties aimed at explanation of recent experiments and prediction of prospective materials and systems.


2020

Wagenknecht D., Turek I.: Anisotropy of resistivity in hexagonal late transition metals and their alloys. J. Phys.: Condens. Matter 32 (2020) 185802

Turek I., Kudrnovský J., Drchal V.: Methods of electron transport in ab initio theory of spin stiffness. Phys. Rev. B 101 (2020) 134410

Turek I., Kudrnovský J., Drchal V.: Theory of spin Hall effect in random Pt-M (M = V, Nb, Ta) alloys. Acta Phys. Pol. A 137 (2020) 717-719

Kudrnovský J., Drchal V., Máca F., Turek I., Khmelevskyi S.: Large anomalous Hall angle in the Fe(60)Al(40) alloy induced by substitutional atomic disorder. Phys. Rev. B 101 (2020) 054437

Wagenknecht D., Výborný K., Carva K., Turek I.: Antiferromagnetic CuMnAs: Ab initio description of finite temperature magnetism and resistivity. J. Magn. Magn. Mater. 513 (2020) 167078



2019

Kudrnovský J., Drchal V., Máca F., Turek I., Khmelevskyi S.: Electron transport in high-entropy alloys: AlxCrFeCoNi as a case study. Phys. Rev. B 100 (2019) 014441

Turek I., Kudrnovský J., Drchal V.: Ab initio theory of the spin-dependent conductivity tensor and the spin Hall effect in random alloys. Phys. Rev. B 100 (2019) 134435

Kudrnovský J., Drchal V., Turek I., Wagenknecht D., Khmelevskyi S.: The spin-disorder resistivity: The disordered local moment approach. Solid State Phenom. 289 (2019) 185-191

Wagenknecht D., Šmejkal L., Kašpar Z., Sinova J., Jungwirth T., Kudrnovský J., Carva K., Turek I.: Temperature-dependent resistivity and anomalous Hall effect in NiMnSb from first principles. Phys. Rev. B 99 (2019) 174433



2018

Drchal V., Kudrnovský J., Wagenknecht D., Turek I.: Spin-disorder resistivity of random fcc-NiFe alloys. Phys. Rev. B 98 (2018) 134442