Zobrazeno 1 - 10
of 15
pro vyhledávání: '"U. B. Hansen"'
Autor:
A. R. Wildes, B. Fåk, U. B. Hansen, M. Enderle, J. R. Stewart, L. Testa, H. M. Rønnow, C. Kim, Je-Geun Park
The spin waves in single crystals of the layered van der Waals antiferromagnet CoPS$_3$ have been measured using inelastic neutron scattering. The data show four distinct spin wave branches with large ($\gtrsim 14$ meV) energy gaps at the Brillouin z
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a3f023f9a41ad5bc83b5766e10d6785
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 852:46-56
The high brilliance at the European Spallation Source (ESS) will allow for performing experiments with much smaller samples than at present neutron facilities and in much more complex sample environments. However the higher flux also results in highe
Autor:
J. O. Birk, Maria Retuerto, K. Lefmann, Ch. Niedermayer, Andreas Kreisel, Jacob Larsen, Brian M. Andersen, A. Bakke, Z. Yamani, Sonja Holm-Dahlin, U. B. Hansen, Uwe Stuhr, Mads F. Bertelsen, A. Fennell, T. K. Schäffer, D. Prabhakaran, Pascale P. Deen
Publikováno v:
Physical Review B. 98
Publikováno v:
Physical Review B. 97
The magnetic properties of ${\mathrm{CoCl}}_{2}\ifmmode\cdot\else\textperiodcentered\fi{}2{\mathrm{H}}_{2}\mathrm{O}$ are analyzed in the mean-field/random-phase approximation using a basis of clusters with four spins along the $c$-axis chains of Co
Autor:
Martin Boehm, Marisa Medarde, Stéphane Rols, Henrik M. Rønnow, S. L. Holm, Jürg Schefer, K. Lefmann, U. B. Hansen, Andrea Piovano, P. Babkevich, E. S. Dreier, Nicola Casati, Gøran J. Nilsen, M. Ruminy, Tom Fennell, K. Lønbæk, M. Skoulatos, Ivica Živković
Publikováno v:
Physical Review B. 97
Autor:
Philipp P. Hallmen, Kim Lefmann, Ana B. Arauzo, Høgni Weihe, Mauro Perfetti, Elena Bartolomé, Joris van Slageren, Jesper Bendix, Samuel Lenz, Mikkel Sørensen, Heiko Bamberger, Juan Bartolomé, Tom Fennell, U. B. Hansen, Giovanna G. Simeoni
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
The rational design of the magnetic anisotropy of molecular materials constitutes a goal of primary importance in molecular magnetism. Indeed, the applications of molecular nanomagnets, such as single-molecule magnets and molecular magnetic refrigera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3851dacba1163d9dee33cac4222156c3
http://hdl.handle.net/10261/181138
http://hdl.handle.net/10261/181138
Autor:
Stéphane Rols, Joris van Slageren, Maria Retuerto, U. B. Hansen, Linda H. Doerrer, Henrik M. Rønnow, Juan Bartolomé, Mikkel Sørensen, Elena Bartolomé, Jesper Bendix, Høgni Weihe, Mauro Perfetti, Giovanna G. Simeoni, Hannu Mutka, Ivika Zivkovic, Kim Lefmann, Stergios Piligkos, Kasper S. Pedersen, Minki Jeong, Ana B. Arauzo
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
Nature Communications, Vol 9, Iss 1, Pp 1-9 (2018)
Nature Communications
Zaguán. Repositorio Digital de la Universidad de Zaragoza
Sørensen, M A, Hansen, U B, Perfetti, M, Pedersen, K S, Bartolome, E, Simeoni, G G, Mutka, H, Rols, S, Jeong, M, Zivkovic, I, Retuerto Millan, M, Arauzo, A, Bartolome, J, Piligkos, S, Weihe, H, Doerrer, L H, van Slageren, J, Rønnow, H M, Lefmann, K & Bendix, J 2018, ' Chemical tunnel-splitting-engineering in a dysprosium-based molecular nanomagnet ', Nature Communications, vol. 9, 1292 . https://doi.org/10.1038/s41467-018-03706-x
instname
Nature Communications, Vol 9, Iss 1, Pp 1-9 (2018)
Nature Communications
Zaguán. Repositorio Digital de la Universidad de Zaragoza
Sørensen, M A, Hansen, U B, Perfetti, M, Pedersen, K S, Bartolome, E, Simeoni, G G, Mutka, H, Rols, S, Jeong, M, Zivkovic, I, Retuerto Millan, M, Arauzo, A, Bartolome, J, Piligkos, S, Weihe, H, Doerrer, L H, van Slageren, J, Rønnow, H M, Lefmann, K & Bendix, J 2018, ' Chemical tunnel-splitting-engineering in a dysprosium-based molecular nanomagnet ', Nature Communications, vol. 9, 1292 . https://doi.org/10.1038/s41467-018-03706-x
Total control over the electronic spin relaxation in molecular nanomagnets is the ultimate goal in the design of new molecules with evermore realizable applications in spin-based devices. For single-ion lanthanide systems, with strong spin-orbit coup
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8cf82b076ed3f1db631791e5da21d75
http://hdl.handle.net/10261/180535
http://hdl.handle.net/10261/180535
Autor:
T. K. Schäffer, Rasmus Toft-Petersen, Jan H. Jensen, Jacob Larsen, Georg Ehlers, J.W. Taylor, S. L. Holm, Niels Bech Christensen, Sonja Rosenlund Ahl, Kim Lefmann, Henrik M. Rønnow, U. B. Hansen
Publikováno v:
Physical Review B. 96
We present experimental evidence for a quantum phase transition in the easy-axis $S=3/2$ anisotropic quasi-one-dimensional ferromagnet ${\mathrm{CoCl}}_{2}\ifmmode\cdot\else\textperiodcentered\fi{}2{\mathrm{D}}_{2}\mathrm{O}$ in a transverse field. E
Autor:
Kim Lefmann, U. B. Hansen, Morten Eskildsen, William P Halperin, A. Stunault, Pengcheng Dai, W. J. Gannon
Experiment and theory indicate that ${\mathrm{UPt}}_{3}$ is a topological superconductor in an odd-parity state, based in part from the temperature independence of the NMR Knight shift. However, quasiparticle spin-flip scattering near a surface, wher
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c844a7f712f164c476e6f37373e9d5cc
Autor:
Uwe Stuhr, Mads F. Bertelsen, Ch. Niedermayer, U. B. Hansen, Andreas Kreisel, Z. Yamani, Pascale P. Deen, Maria Retuerto, A. Bakke, T. K. Schäffer, Kim Lefmann, A. Fennell, Dharmalingam Prabhakaran, Jacob Larsen, Brian M. Andersen, S. L. Holm, J. O. Birk
Publikováno v:
Holm, S L, Kreisel, A, Schaeffer, T K, Bakke, A, Bertelsen, M, Hansen, U B, Retuerto, M, Larsen, J, Prabhakaran, D, Deen, P P, Yamani, Z, Birk, J O, Stuhr, U, Niedermayer, C, Fennell, A L, Andersen, B M & Lefmann, K 2018, ' Magnetic ground state and magnon-phonon interaction in multiferroic h-YMnO 3 ', Physical Review B, vol. 97, no. 13, 134304 . https://doi.org/10.1103/PhysRevB.97.134304
Inelastic neutron scattering has been used to study the magneto-elastic excitations in the multiferroic manganite hexagonal YMnO$_3$. An avoided crossing is found between magnon and phonon modes close to the Brillouin zone boundary in the $(a,b)$-pla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1dbc31657b958833927fd0eab5961a8