322 citations · 1.3k across the 33 of their papers we have counts for
33 papers
Magnetic impurities on superconducting Pb surfaces
Ming-Hung Wu, Emma Thill, Jacob Crosbie +2
It has been predicted theoretically and found experimentally that magnetic impurities induce localized bound states within the superconducting energy gap, called Yu-Shiba-Rusinov (…
Uniaxial strain, topological band singularities and pairing symmetry changes in superconductors
Macauley Curtis, Martin Gradhand, James Annett
Uniaxial strain affects pairing symmetry states in superconductors by changing the lattice symmetry, and by altering Fermi surface topology. Here, we present a systematic study of…
Skyrmionic Spin Structures in Layered Fe5GeTe2 Up To Room Temperature
Maurice Schmitt, Thibaud Denneulin, András Kovács +12
The role of the crystal lattice, temperature and magnetic field for the spin structure formation in the 2D van der Waals magnet Fe5GeTe2 is a key open question. Using Lorentz trans…
Distinguishing and pairing in by high magnetic field H-T phase diagrams
R. Gupta, S. Shallcross, J. Quintanilla +2
Employing a realistic tight-binding model describing the Fermi surface in the normal state of we map out magnetic field versus temperature phase diagrams for $d_{x^2-y^…
Electronic Impurity Scattering Induced Spin Accumulation in Metallic Thin Films
Ming-Hung Wu, Alexander Fabian, Martin Gradhand
In order to explore the spin accumulation, evaluating the spin galvanic and spin Hall effect, we utilize the semi-classical Boltzmann equation based on input from the relativistic…
Strong bulk spin-orbit torques quantified in the van der Waals ferromagnet Fe3GeTe2
Franziska Martin, Kyujoon Lee, Maurice Schmitt +13
The recent emergence of magnetic van der Waals materials allows for the investigation of current induced magnetization manipulation in two dimensional materials. Uniquely, Fe3GeTe2…
Full orbital decomposition of Yu-Shiba-Rusinov states based on first principles
Tom G. Saunderson, James F. Annett, Gábor Csire +1
We have implemented the Bogoliubov-de Gennes (BdG) equation in a screened Korringa-Kohn- Rostoker (KKR) method for solving, self-consistently, the superconducting state for 3d crys…
Spin accumulation from non-equilibrium first principles methods
Alexander Fabian, Hugo Rossignol, Ming-Hung Wu +3
For the technologically relevant spin Hall effect most theoretical approaches rely on the evaluation of the spin-conductivity tensor. In contrast, for most experimental configurati…
Magnetic anisotropy in Fe/U and Ni/U bilayers
E. R. Gilroy, M. -H. Wu, M. Gradhand +2
Magnetometry measurements of Fe/U and Ni/U bilayer systems reveal a non-monotonic dependence of the magnetic anisotropy for U thicknesses in the range 0 nm - 8 nm, with the Fe/U bi…
Real-space multiple scattering theory for superconductors with impurities
Tom G. Saunderson, Zsolt Győrgypál, James F. Annett +3
We implement the Bogoliubov-de Gennes (BdG) equation in real-space using the screened Korringa-Kohn-Rostoker (KKR) method. This allows us to solve, self-consistently, the supercond…
Quantitative Theory of Triplet Pairing in the Unconventional Superconductor LaNiGa
Sudeep Kumar Ghosh, Gábor Csire, Philip Whittlesea +4
The exceptionally low-symmetry crystal structures of the time-reversal symmetry breaking superconductors LaNiC and LaNiGa lead to an internally-antisymmetric non-unitary tr…
Gap Anisotropy in Multiband Superconductors Based on Multiple Scattering Theory
Tom G. Saunderson, James F. Annett, Balázs Újfalussy +2
We implement the Bogoliubov-de Gennes (BdG) equation in a screened Korringa-Kohn-Rostoker (KKR) method for solving, self-consistently, the superconducting state for 3d crystals. Th…
Interfacial mechanism in the anomalous Hall effect of Co/BiO bilayers
Edurne Sagasta, Juan Borge, Luis Esteban +5
Oxide interfaces are a source of spin-orbit coupling which can lead to novel spin-to-charge conversion effects. In this work the contribution of the BiO interface to the an…
Relation between spin Hall effect and anomalous Hall effect in 3 ferromagnetic metals
Yasutomo Omori, Edurne Sagasta, Yasuhiro Niimi +4
We study the mechanisms of the spin Hall effect (SHE) and anomalous Hall effect (AHE) in 3 ferromagnetic metals (Fe, Co, permalloy (NiFe; Py), and Ni) by varying t…
Insights into spin and charge currents crossing ferromagnetic/nonmagnetic interfaces induced by spin and anomalous Hall effect
Albert Hönemann, Christian Herschbach, Dmitry V. Fedorov +2
We start closing a gap in the comparison of experimental and theoretical data associated with the spin Hall effect. Based on a first-principles characterization of electronic struc…
Absence of strong skew scattering in crystals with multi-sheeted Fermi surfaces
Albert Hönemann, Christian Herschbach, Dmitry V. Fedorov +2
We consider an extrinsic contribution to the anomalous and spin Hall effect in dilute alloys based on Fe, Co, Ni, and Pt hosts with different substitutional impurities. It is shown…
Unveiling the mechanisms of the spin Hall effect in Ta
Edurne Sagasta, Yasutomo Omori, Saül Vélez +7
Spin-to-charge current interconversions are widely exploited for the generation and detection of pure spin currents and are key ingredients for future spintronic devices including…
Modern Theory for the Orbital Moment in a Superconductor
Joshua Robbins, James F. Annett, Martin Gradhand
The chiral p-wave superconducting state is comprised of spin triplet Cooper pairs carrying a finite orbital angular momentum. For the case of a periodic lattice, calculating the ne…
Seebeck Effect in Nanomagnets
Dmitry V. Fedorov, Martin Gradhand, Katarina Tauber +2
We present a theory of the Seebeck effect in nanomagnets with dimensions smaller than the spin diffusion length, showing that the spin accumulation generated by a temperature gradi…
A random wave model for the Aharonov-Bohm effect
Alexander J H Houston, Martin Gradhand, Mark R Dennis
We study an ensemble of random waves subject to the Aharonov-Bohm effect. The introduction of a point with a magnetic flux of arbitrary strength into a random wave ensemble gives a…
Tuning the spin Hall effect of Pt from the moderately dirty to the superclean regime
Edurne Sagasta, Yasutomo Omori, Miren Isasa +5
We systematically measure and analyze the spin diffusion length and the spin Hall effect in Pt with a wide range of conductivities using the spin absorption method in lateral spin…
Optical Gyrotropy and the Nonlocal Hall Effect in Chiral Charge Ordered TiSe
Martin Gradhand, Jasper van Wezel
It has been suggested that materials which break spatial inversion symmetry, but not time reversal symmetry, will be optically gyrotropic and display a nonlocal Hall effect. The as…
Polar Kerr effect from a time-reversal symmetry breaking unidirectional charge density wave
Martin Gradhand, Ilya Eremin, Johannes Knolle
We analyze the Hall conductivity of a charge ordered state with momentum and calculate the intrinsic contribution to the Kerr angle using the…
The Berry curvature of the Bogoliubov quasiparticle Bloch states in the unconventional superconductor SrRuO
Martin Gradhand, James F. Annett
We will extend the concept of electron band Berry curvatures to superconducting materials. We show that this can be defined for the Bogoliubov-de Gennes equation describing the sup…