Zobrazeno 1 - 10
of 349
pro vyhledávání: '"Eckern U"'
Publikováno v:
Phys. Rev. B 109, 165107 (2024)
Ordinary superconductors are widely assumed insensitive to small concentrations of random nonmagnetic impurities, whereas strong disorder suppresses superconductivity, ultimately leading to a superconductor-insulator transition. In between these limi
Externí odkaz:
http://arxiv.org/abs/2403.13202
Autor:
Weh, A., Otsuki, J., Schnait, H., Evertz, H. G., Eckern, U., Lichtenstein, A. I., Chioncel, L.
Publikováno v:
Phys. Rev. Research 2, 043263 (2020)
In this work, we investigate models for bulk, bi- and multilayers containing half-metallic ferromagnets (HMFs), at zero and at finite temperature, in order to elucidate the effects of strong electronic correlations on the spectral properties (density
Externí odkaz:
http://arxiv.org/abs/2007.02804
Autor:
Karnad, G. V., Gorini, C., Lee, K., Schulz, T., Conte, R. Lo, Wells, A. W. J., Han, D. -S., Shahbazi, K., Kim, J. -S., Moore, T. A., Swagten, H. J. M., Eckern, U., Raimondi, R., Kläui, M.
Publikováno v:
Phys. Rev. B 97, 100405 (2018)
We measure and analyze the effective spin Hall angle of platinum in the low residual resistivity regime by second harmonic measurements of the spin-orbit torques for a multilayer of Pt/Co/AlO$_x$. An angular dependent study of the torques allows us t
Externí odkaz:
http://arxiv.org/abs/1802.09438
Autor:
Morari, C., Appelt, W. H., Prinz-Zwick, A., Eckern, U., Schwingenschlögl, U., Östlin, A., Chioncel, L.
Publikováno v:
Phys. Rev. B 96, 205137 (2017)
We examine the ballistic conduction through Au-NiMnSb-Au heterostructures consisting of up to four units of NiMnSb in the scattering region. We investigate the dependence of the transmission function computed within the local spin density approximati
Externí odkaz:
http://arxiv.org/abs/1709.00983
In this note we summarize our recent results for the temperature dependence of transport coefficients of metallic films in the presence of spin-orbit coupling. Our focus is on (i) the spin Nernst and the thermal Edelstein effects, and (ii) the phonon
Externí odkaz:
http://arxiv.org/abs/1609.00561
Autor:
Chioncel, L., Morari, C., Östlin, A., Appelt, W. H., Droghetti, A., Radonjić, M. M., Rungger, I., Vitos, L., Eckern, U., Postnikov, A. V.
Publikováno v:
Phys. Rev. B 92, 054431 (2015)
The effects of local electronic interactions and finite temperatures upon the transmission across the Cu$_4$CoCu$_4$ metallic heterostructure are studied in a combined density functional and dynamical mean field theory. It is shown that, as the elect
Externí odkaz:
http://arxiv.org/abs/1504.06588
Publikováno v:
New J. Phys. 18, 013003 (2016)
The magnetic and transport properties of the metal phthalocyanine (MPc) and F$_{16}$MPc (M = Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and Ag) families of molecules in contact with S-Au wires are investigated by density functional theory within the local
Externí odkaz:
http://arxiv.org/abs/1502.02603
Publikováno v:
Phys. Rev. B 87, 165115 (2013)
The magnetic and electronic properties of metal phthalocyanines (MPc) and fluorinated metal phthalocyanines (F$_{16}$MPc) are studied by means of spin density functional theory (SDFT). Several metals (M) such as Ca, all first d-row transition metals
Externí odkaz:
http://arxiv.org/abs/1302.1144
Publikováno v:
Phys. Rev. B 83, 115128 (2011)
We study both static and transport properties of model quantum dots, employing density functional theory as well as (numerically) exact methods. For the lattice model under consideration the accuracy of the local-density approximation generally is po
Externí odkaz:
http://arxiv.org/abs/1009.3416
Publikováno v:
Eur. Phys. J. Special Topics 180, 117-134 (2010)
Ambipolar charge carrier transport in Copper phthalocyanine (CuPc) is studied experimentally in field-effect transistors and metal-insulator-semiconductor diodes at various temperatures. The electronic structure and the transport properties of CuPc a
Externí odkaz:
http://arxiv.org/abs/1003.6094