Zobrazeno 1 - 10
of 596
pro vyhledávání: '"VAN SCHILFGAARDE, M."'
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
Autor:
Ness, H., Corsetti, F., Pashov, D., Verstichel, B., Winkler, G. W., van Schilfgaarde, M., Lutchyn, R. M.
The electronic structure of surfaces and interfaces plays a key role in the properties of quantum devices. Here, we study the electronic structure of realistic Al/InAs/Al heterojunctions using a combination of density functional theory (DFT) with hyb
Externí odkaz:
http://arxiv.org/abs/2403.17809
Autor:
Kurleto, R., Wu, C. -H., Acharya, S., Narayan, D. M., Berggren, B. S., Hao, P., Shackelford, A., Whitelock, H. R., Sierzega, Z., Hashimoto, M., Lu, D., Jozwiak, C., Cline, R. P., Pashov, D., Chen, J., van Schilfgaarde, M., Grosche, F. M., Dessau, D. S.
We report heavy electron behavior in unconventional superconductor YFe$_2$Ge$_2$ ($T_C \,{=}\, 1.2$ K). We directly observe very heavy bands ($m_\mathrm{eff}\sim 25 m_e$) within $\sim$10 meV of the Fermi level $E_{F}$ using angle-resolved photoelectr
Externí odkaz:
http://arxiv.org/abs/2311.09492
Autor:
Ness, H., van Schilfgaarde, M.
Applying the Bogoliubov-de Gennes equations with density-functional theory, it is possible to formulate first-principles description of current-phase relationships in superconducting/normal (magnetic)/superconducting trilayers. Such structures are th
Externí odkaz:
http://arxiv.org/abs/2309.06984
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 101, 224405 (2020)
Spin transport at metallic interfaces is an essential ingredient of various spintronic device concepts, such as giant magnetoresistance, spin-transfer torque, and spin pumping. Spin-orbit coupling plays an important role in many such devices. In part
Externí odkaz:
http://arxiv.org/abs/2003.12221
Publikováno v:
Phys. Rev. B 101, 020407 (2020)
The thickness dependence of spin-orbit torque and magnetoresistance in ferromagnet/heavy-metal bilayers is studied using the first-principles non-equilibrium Green's function formalism combined with the Anderson disorder model. A systematic expansion
Externí odkaz:
http://arxiv.org/abs/1908.02680
Publikováno v:
Phys. Rev. Materials 3, 011401 (2019)
The angular dependence of spin-orbit torque in a disordered Co/Pt bilayer is calculated using a first-principles non-equilibrium Green's function formalism with an explicit supercell averaging over Anderson disorder. In addition to the usual dampingl
Externí odkaz:
http://arxiv.org/abs/1810.11003
Publikováno v:
Phys. Rev. Materials 1, 051401 (2017)
Electronic structure calculations are used to examine the magnetic properties of Fe$_2$P-based alloys and the mechanisms through which the Curie temperature and magnetocrystalline anisotropy can be optimized for specific applications. It is found tha
Externí odkaz:
http://arxiv.org/abs/1708.01683
Autor:
Sponza, L., Pisanti, P., Vishina, A., Acharya, S., Pashov, D., Vidal, J., Weber, C., Kotliar, G., van Schilfgaarde, M.
Publikováno v:
Phys. Rev. B 95, 041112 (2017)
We present a detailed study of local and non-local correlations in the electronic structure of elemental transition metals carried out by means of the Quasiparticle Self-consistent GW (QSGW ) and Dynamical Mean Field Theory (DMFT). Recent high resolu
Externí odkaz:
http://arxiv.org/abs/1603.05521