Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Pohlit, Merlin"'
Autor:
Strandqvist, Nanny, Skovdal, Björn Erik, Pohlit, Merlin, Stopfel, Henry, Kapaklis, Vassilios, Hjörvarsson, Björgvin
We demonstrate directional dependence of the self-modification of internal mesospin textures in magnetic metamaterials, arising from the coupling of the atomic- and mesoscopic length-scales. Dressing the mesospins in different directions enables the
Externí odkaz:
http://arxiv.org/abs/2205.03134
Autor:
Skovdal, Björn Erik, Slöetjes, Samuel D., Pohlit, Merlin, Stopfel, Henry, Kapaklis, Vassilios, Hjörvarsson, Björgvin
Publikováno v:
Phys. Rev B 107, L060406 (2023)
We provide experimental and numerical evidence for thermal excitations within and among magnetic mesospins, forming artificial spin ice structures. At low temperatures, a decrease in magnetization and increase in susceptibility is observed with incre
Externí odkaz:
http://arxiv.org/abs/2205.00938
Autor:
Ravensburg, Anna L., Pálsson, Gunnar K., Pohlit, Merlin, Hjörvarsson, Björgvin, Kapaklis, Vassilios
Publikováno v:
Thin Solid Films (2022)
We investigate the growth of thin Fe layers on MgAl$_2$O$_4$~(001) and MgO~(001) substrates using dc magnetron sputtering. The crystal quality of Fe layers deposited on MgAl$_2$O$_4$ is found to be substantially higher as compared to Fe grown on MgO
Externí odkaz:
http://arxiv.org/abs/2204.02286
Autor:
Chioar, Ioan-Augustin, Vantaraki, Christina, Pohlit, Merlin, Rowan-Robinson, Richard M., Papaioannou, Evangelos Th., Hjörvarsson, Björgvin, Kapaklis, Vassilios
Publikováno v:
Applied Physics Letters 120, 032407 (2022)
We study the steering of visible light using a combination of magneto-optical effects and the reconfigurability of magnetic domains in Yttrium-Iron Garnet films. The spontaneously formed stripe domains are used as a field-controlled optical grating,
Externí odkaz:
http://arxiv.org/abs/2111.15219
Autor:
Skovdal, Björn Erik, Strandqvist, Nanny, Stopfel, Henry, Pohlit, Merlin, Warnatz, Tobias, Slöetjes, Samuel D., Kapaklis, Vassilios, Hjörvarsson, Björgvin
Publikováno v:
Phys. Rev. B 104, 014434 (2021)
Spin and spatial dimensionalities are universal concepts, essential for describing both phase transitions and dynamics in magnetic materials. Lately, these ideas have been adopted to describe magnetic properties of metamaterials, as well as to replic
Externí odkaz:
http://arxiv.org/abs/2102.08731
Autor:
Ciuciulkaite, Agne, Gueckstock, Oliver, Ravensburg, Anna, Pohlit, Merlin, Warnatz, Tobias, Kampfrath, Tobias, Schmidt, Georg, Papaioannou, Evangelos Th., Kapaklis, Vassilios
We investigate the THz emission characteristics of ferromagnetic/non-magnetic metallic heterostructures, focusing on thin Fe/Pt bilayers. In particular, we report on the impact of optimized crystal growth of the epitaxial Fe layers on the THz emissio
Externí odkaz:
http://arxiv.org/abs/2010.12457
Autor:
Rowan-Robinson, Richard M., Hurst, Jérome, Ciuciulkaite, Agne, Chioar, Ioan-Augustin, Pohlit, Merlin, Zapata, Mario, Vavassori, Paolo, Dmitriev, Alexandre, Oppeneer, Peter M., Kapaklis, Vassilios
Publikováno v:
Advanced Photonics Research 2, 2100119 (2021)
Nanometer-thin rare-earth-transition metal (RE-TM) alloys with precisely controlled compositions and out-of-plane magnetic anisotropy are currently in the focus for ultrafast magnetophotonic applications. However, achieving lateral nanoscale dimensio
Externí odkaz:
http://arxiv.org/abs/2005.14478
Autor:
Pohlit, Merlin, Muscas, Giuseppe, Chioar, Ioan-Augustin, Stopfel, Henry, Ciuciulkaite, Agne, Östman, Erik, Pappas, Spyridon D., Stein, Aaron, Hjörvarsson, Björgvin, Jönsson, Petra E., Kapaklis, Vassilios
Publikováno v:
Phys. Rev. B 101, 134404 (2020)
We report on the study of the thermal dynamics of square artificial spin ice, probed by means of temperature and frequency dependent AC susceptibility. Pronounced influence of the inter-island coupling strength was found on the frequency response of
Externí odkaz:
http://arxiv.org/abs/2001.04746
Autor:
Keller, Lukas, Mamoori, Mohanad K. I. Al, Pieper, Jonathan, Gspan, Christian, Stockem, Irina, Schröder, Christian, Barth, Sven, Winkler, Robert, Plank, Harald, Pohlit, Merlin, Müller, Jens, Huth, Michael
Building nanotechnological analogues of naturally occurring magnetic structures has proven to be a powerful approach to studying topics like geometry-induced magnetic frustration and to provide model systems for statistical physics. Moreover, it prac
Externí odkaz:
http://arxiv.org/abs/1709.05847
Autor:
Zapf, Vivien S., Ueland, B. G., Laver, Mark, Lonsky, Martin, Pohlit, Merlin, Müller, Jens, Lancaster, Tom, Möller, Johannes S., Blundell, Stephen J., Singleton, John, Mira, Jorge, Yañez-Vilar, Susana, Señarís-Rodríguez, Maria Antonia
We investigate a magnetic hysteresis loop with a remanent moment that couples to electric polarization to create coupled hysteretic multiferroic behavior in Lu2MnCoO6. Measurements of elastic neutron diffraction, muon spin relaxation, and micro-Hall
Externí odkaz:
http://arxiv.org/abs/1409.5072