Browsing NTNU Open by Author "Risinggård, Vetle Kjær"
Now showing items 1-8 of 8
-
Current Control of Magnetism in Two-Dimensional Fe3GeTe2
Johansen, Øyvind; Risinggård, Vetle Kjær; Sudbø, Asle; Linder, Jacob; Brataas, Arne (Journal article; Peer reviewed, 2019)The recent discovery of magnetism in two-dimensional van der Waals systems opens the door to discovering exciting physics. We investigate how a current can control the ferromagnetic properties of such materials. Using ... -
Direct and inverse superspin Hall effect in two-dimensional systems: Electrical detection of spin supercurrents
Risinggård, Vetle Kjær; Linder, Jacob (Journal article; Peer reviewed, 2019)A useful experimental signature of the ordinary spin Hall effect is the spin accumulation it produces at the sample edges. The superspin Hall current [Phys. Rev. B 96, 094512 (2017)] is a transverse equilibrium spin current ... -
Equations of motion and frequency dependence of magnon-induced domain wall motion
Risinggård, Vetle Kjær; Tveten, Erlend Grytli; Brataas, Arne; Linder, Jacob (Journal article; Peer reviewed, 2017)Spin waves can induce domain wall motion in ferromagnets. We derive the equations of motion for a transverse domain wall driven by spin waves. Our calculations show that the magnonic spin-transfer torque does not cause ... -
An Overall Furnace Model for the Silicomanganese Process
Sparta, Manuel; Risinggård, Vetle Kjær; Einarsrud, Kristian Etienne; Halvorsen, Svenn Anton (Journal article; Peer reviewed, 2021)An overall model for a pilot-scale silicomanganese furnace that simultaneously considers electrical and thermal conditions, process chemistry, and flow of solid and liquid substances. -
Self-consistent solution for the magnetic exchange interaction mediated by a superconductor
Ghanbari Birgani, Atousa; Risinggård, Vetle Kjær; Linder, Jacob (Peer reviewed; Journal article, 2021)We theoretically determine the magnetic exchange interaction between two ferromagnets coupled by a superconductor using a tight-binding lattice model. The main purpose of this study is to determine how the self-consistently ... -
Spin currents and torques via magnons, electrons, and Cooper pairs
Risinggård, Vetle Kjær (Doctoral theses at NTNU;2019:224, Doctoral thesis, 2019)Spin-based electronics—spintronics—is a candidate technology for complementing or replacing traditional semiconductor electronics at the end of Moore's law. We consider different spin carriers—electrons, magnons, and Cooper ... -
Transition between canted antiferromagnetic and spin-polarized ferromagnetic quantum Hall states in graphene on a ferrimagnetic insulator
Li, Yang; Amado, Mario; Hyart, Timo; Mazur, G P; Risinggård, Vetle Kjær; Wagner, T; McKenzie Sell, L; Kimbell, G; Wunderlich, J; Linder, Jacob; Robinson, Jason W.A. (Peer reviewed; Journal article, 2020)In the quantum Hall regime of graphene, antiferromagnetic and spin-polarized ferromagnetic states at the zeroth Landau level compete, leading to a canted antiferromagnetic state depending on the direction and magnitude of ... -
Universal absence of Walker breakdown and linear current–velocity relation via spin–orbit torques in coupled and single domain wall motion
Risinggård, Vetle Kjær; Linder, Jacob (Journal article, 2017)We consider theoretically domain wall motion driven by spin-orbit and spin Hall torques. We find that it is possible to achieve universal absence of Walker breakdown for all spin-orbit torques using experimentally relevant ...