Browsing NTNU Open by Author "Fyhn, Eirik Holm"
Now showing items 1-14 of 14
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A consistent reduction of the two-layer shallow-water equations to an accurate one-layer spreading model
Fyhn, Eirik Holm; Lervåg, Karl Yngve; Ervik, Åsmund; Wilhelmsen, Øivind (Journal article; Peer reviewed, 2019)The gravity-driven spreading of one fluid in contact with another fluid is of key importance to a range of topics. These phenomena are commonly described by the two-layer shallow-water equations (SWE). When one layer is ... -
A combined fluid-dynamic and thermodynamic model to predict the onset of rapid phase transitions in LNG spills
Lervåg, Karl Yngve; Skarsvåg, Hans Langva; Aursand, Eskil; Ouassou, Jabir Ali; Hammer, Morten; Reigstad, Gunhild Allard; Ervik, Åsmund; Fyhn, Eirik Holm; Gjennestad, Magnus Aashammer; Aursand, Peder; Wilhelmsen, Øivind (Peer reviewed; Journal article, 2020)Transport of liquefied natural gas (LNG) by ship occurs globally on a massive scale. The large temperature difference between LNG and water means LNG will boil violently if spilled onto water. This may cause a physical ... -
Combined Zeeman and orbital effect on the Josephson effect in rippled graphene
Fyhn, Eirik Holm; Amundsen, Morten; Zalic, Ayelet; Dvir, Tom; Steinberg, Hadar; Linder, Jacob (Peer reviewed; Journal article, 2020)The two-dimensional nature of graphene Josephson junctions offers the possibility of creating effective superconductor-ferromagnet-superconductor junctions with tunable Zeeman splitting caused by an in-plane magnetic field. ... -
Controllable vortex loops in superconducting proximity systems
Fyhn, Eirik Holm; Linder, Jacob (Journal article; Peer reviewed, 2019)Superconducting vortex loops have so far avoided experimental detection despite being the focus of much theoretical work. We here propose a method of creating controllable vortex loops in the superconducting condensate ... -
Exotic Vortex Structures in Diffusive Superconducting Systems
Fyhn, Eirik Holm (Master thesis, 2019)Selv vanligvis ikke-superledende materialer kan oppføre seg superledende dersom de blir plassert inntil en superleder. Dette fenometet kalles the proximity effect på engelsk, og når to materialer plasseres inntil hverandre ... -
Extreme enhancement of superconductivity in epitaxial aluminum near the monolayer limit
van Weerdenburg, Werner M.J.; Kamlapure, Anand; Fyhn, Eirik Holm; Huang, Xiaochun; van Mullekom, Niels P.E.; Steinbrecher, Manuel; Krogstrup, Peter; Linder, Jacob Wüsthoff; Khajetoorians, Alexander Ako (Peer reviewed; Journal article, 2023)BCS theory has been widely successful at describing elemental bulk superconductors. Yet, as the length scales of such superconductors approach the atomic limit, dimensionality as well as the environment of the superconductor ... -
Green’s Function Approach to Quantum Phenomena in Heterostructures with Spin- Polarization and Coherence
Fyhn, Eirik Holm (Doctoral theses at NTNU;2023:238, Doctoral thesis, 2023)Kvantemekanikken som muliggjør fremtidens informasjonsteknologi Moderne datamaskiner produserer en mengde varme som er sammenlignbart med varmen fra panelovner. Denne varmeproduksjonen, sammen med utfordringer relatert ... -
Planar graphene-NbSe2 Josephson junctions in a parallel magnetic field
Dvir, Tom; Zalic, Ayelet; Fyhn, Eirik Holm; Amundsen, Morten; Taniguchi, Takashi; Watanabe, Kenji; Linder, Jacob; Steinberg, Hadar (Peer reviewed; Journal article, 2021)Thin transition metal dichalcogenides sustain superconductivity at large in-plane magnetic fields due to Ising spin-orbit protection, which locks their spins in an out-of-plane orientation. Here we use thin NbSe2 as ... -
Quasiclassical theory for antiferromagnetic metals
Fyhn, Eirik Holm; Brataas, Arne; Qaiumzadeh, Alireza; Linder, Jacob Wüsthoff (Peer reviewed; Journal article, 2023)Unlike ferromagnetism, antiferromagnetism cannot readily be included in the quasiclassical Keldysh theory because of the rapid spatial variation in the directions of of the magnetic moments. The quasiclassical framework ... -
Spin pumping in superconductor-antiferromagnetic insulator bilayers
Fyhn, Eirik Holm; Linder, Jacob (Peer reviewed; Journal article, 2021)We study theoretically spin pumping in bilayers consisting of superconductors (SC) and antiferromagnetic insulators (AFI). We consider both compensated and uncompensated interfaces and include both the regular scattering ... -
Spin-orbit pumping
Fyhn, Eirik Holm; Linder, Jacob (Journal article; Peer reviewed, 2022) -
Superconducting Proximity Effect and Long-Ranged Triplets in Dirty Metallic Antiferromagnets
Fyhn, Eirik Holm; Brataas, Arne; Qaiumzadeh, Alireza; Linder, Jacob Wüsthoff (Journal article; Peer reviewed, 2023)Antiferromagnets have no net spin splitting on the scale of the superconducting coherence length. Despite this, antiferromagnets have been observed to suppress superconductivity in a similar way as ferromagnets, a phenomenon ... -
Superconducting vortices in half-metals
Fyhn, Eirik Holm; Linder, Jacob (Journal article; Peer reviewed, 2019)When the impurity mean free path is short, only spin-polarized Cooper pairs which are nonlocally and antisymmetrically correlated in time may exist in a half-metallic ferromagnet. As a consequence, the half-metal acts as ... -
Temporarily enhanced superconductivity from magnetic fields
Fyhn, Eirik Holm; Linder, Jacob (Peer reviewed; Journal article, 2021)Contrary to the expected detrimental influence on superconductivity when applying a magnetic field, we predict that the abrupt onset of such a field can temporarily strongly enhance the superconducting order parameter. ...