User profiles for Axel Hoffmann

Axel Hoffmann

- Verified email at tu-berlin.de - Cited by 22770

Axel Hoffmann

- Verified email at illinois.edu - Cited by 22097

Spin Hall effects in metals

A Hoffmann - IEEE transactions on magnetics, 2013 - ieeexplore.ieee.org
Spin Hall effects convert charge currents into spin currents and vice versa even in nonmagnetic
conductors due to spin orbit coupling. This enables spin Hall effects to be utilized both …

Blowing magnetic skyrmion bubbles

…, KL Wang, O Heinonen, SGE Te Velthuis, A Hoffmann - Science, 2015 - science.org
The formation of soap bubbles from thin films is accompanied by topological transitions. Here
we show how a magnetic topological structure, a skyrmion bubble, can be generated in a …

Spin Hall effects in metallic antiferromagnets

…, MB Jungfleisch, W Jiang, JE Pearson, A Hoffmann… - Physical review …, 2014 - APS
We investigate four CuAu-I-type metallic antiferromagnets for their potential as spin current
detectors using spin pumping and inverse spin Hall effect. Nontrivial spin Hall effects were …

Direct observation of the skyrmion Hall effect

…, O Heinonen, KL Wang, Y Zhou, A Hoffmann… - Nature Physics, 2017 - nature.com
The well-known Hall effect describes the transverse deflection of charged particles (electrons/holes)
as a result of the Lorentz force. Similarly, it is intriguing to examine if quasi-particles …

Interface-induced phenomena in magnetism

F Hellman, A Hoffmann, Y Tserkovnyak… - Reviews of modern …, 2017 - APS
This article reviews static and dynamic interfacial effects in magnetism, focusing on interfacially
driven magnetic effects and phenomena associated with spin-orbit coupling and intrinsic …

Zinc oxide: from fundamental properties towards novel applications

CF Klingshirn, A Waag, A Hoffmann, J Geurts - 2010 - books.google.com
The book gives a comprehensive review of the present state-of-the-art in ZnO R+ D, including
growth, doping, lattice dynamics, electric magnetic and optical properties. The emphasis is …

Tunable transport gap in phosphorene

S Das, W Zhang, M Demarteau, A Hoffmann… - Nano …, 2014 - ACS Publications
In this article, we experimentally demonstrate that the transport gap of phosphorene can be
tuned monotonically from ∼0.3 to ∼1.0 eV when the flake thickness is scaled down from …

Energy relaxation by multiphonon processes in InAs/GaAs quantum dots

R Heitz, M Veit, NN Ledentsov, A Hoffmann, D Bimberg… - Physical Review B, 1997 - APS
Carrier relaxation and recombination in self-organized InAs/GaAs quantum dots (QD’s) is
investigated by photoluminescence (PL), PL excitation (PLE), and time-resolved PL …

Roadmap of spin–orbit torques

…, MD Stiles, S Emori, A Hoffmann… - IEEE transactions on …, 2021 - ieeexplore.ieee.org
Spin–orbit torque (SOT) is an emerging technology that enables the efficient manipulation
of spintronic devices. The initial processes of interest in SOTs involved electric fields, spin–…

Skyrmions in magnetic multilayers

…, G Chen, K Liu, J Zang, SGE Te Velthuis, A Hoffmann - Physics Reports, 2017 - Elsevier
Symmetry breaking together with strong spin–orbit interaction gives rise to many exciting
phenomena within condensed matter physics. A recent example is the existence of chiral spin …