Zobrazeno 1 - 10
of 345
pro vyhledávání: '"Nilsen, G"'
Autor:
Passos, F. de Almeida, Nilsen, G. J., Patrick, C. E., Le, M. D., Balakrishnan, G., Kumar, Santosh, Thamizhavel, A., Cornejo, D. R., Jiménez, J. Larrea
We present an inelastic neutron scattering study of the crystal electric field levels in the intermetallic ferrimagnets RECo$_{5}$ (RE = Nd and Y). In NdCo$_{5}$, measurements at $5~$K reveal two levels at approximately 28.9 and 52.9 meV. Crystal fie
Externí odkaz:
http://arxiv.org/abs/2306.00821
Gas chromatography–mass spectrometry (GC–MS) and bulk carbon isotope determinations have been performed on samples (‘cemented organic residues’, charcoal, sediment and fire-cracked rock) excavated from 12 slab-lined pits from various location
Externí odkaz:
http://hdl.handle.net/10454/6012
Gas chromatography-mass spectrometry (GC-MS) and bulk carbon isotope determinations have been performed on samples ('cemented organic residues', charcoal, sediment and fire-cracked rock) excavated from twelve slab-lined pits from various locations in
Externí odkaz:
http://hdl.handle.net/10454/4798
Publikováno v:
Phys. Rev. B 103, 104429 (2021)
A recent polarized neutron diffraction experiment on the 5d2 rhenium double perovskite Ba2YReO6 held at a low temperature uncovered weak magnetic diffraction peaks. Data analysis inferred a significantly reduced Re dipole moment, and long-range order
Externí odkaz:
http://arxiv.org/abs/2011.03941
Autor:
Wan, W., Christensen, N. B., Sandvik, A. W., Tregenna-Piggott, P., Nilsen, G. J., Mourigal, M., Perring, T. G., Frost, C. D., McMorrow, D. F., Rønnow, H. M.
It is well established that in the low-temperature limit, the two-dimensional quantum Heisenberg antiferromagnet on a square lattice (2DQHAFSL) exhibits an anomaly in its spectrum at short-wavelengths on the zone-boundary. In the vicinity of the $(\p
Externí odkaz:
http://arxiv.org/abs/1912.01364
Autor:
Wawrzyńczak, R., Tomasello, B., Manuel, P., Khalyavin, D., Le, M. D., Guidi, T., Cervellino, A., Ziman, T., Boehm, M., Nilsen, G. J., Fennell, T.
Publikováno v:
Phys. Rev. B 100, 094442 (2019)
Terbium gallium garnet (TGG), Tb$_3$Ga$_5$O$_{12}$, is well known for its applications in laser optics, but also exhibits complex low-temperature magnetism that is not yet fully understood. Its low-temperature magnetic order is determined by means of
Externí odkaz:
http://arxiv.org/abs/1910.08570
Autor:
Skoulatos, M., Rucker, F., Nilsen, G. J., Bertin, A., Pomjakushina, E., Ollivier, J., Schneidewind, A., Georgii, R., Zaharko, O., Keller, L., Rüegg, Ch., Pfleiderer, C., Schmidt, B., Shannon, N., Kriele, A., Senyshyn, A., Smerald, A.
Publikováno v:
Phys. Rev. B 100, 014405 (2019)
We report neutron scattering and AC magnetic susceptibility measurements of the 2D spin-1/2 frustrated magnet BaCdVO(PO$_{4}$)$_{2}$. At temperatures well below $T_{\sf N}\approx 1K$, we show that only 34 % of the spin moment orders in an up-up-down-
Externí odkaz:
http://arxiv.org/abs/1903.12462
Autor:
Bowman, D. F., Cemal, E., Lehner, T., Wildes, A. R., Mangin-Thro, L., Nilsen, G. J., Gutmann, M. J., Voneshen, D. J., Prabhakaran, D., Boothroyd, A. T., Porter, D. G., Castelnovo, C., Refson, K., Goff, J. P.
Publikováno v:
Nature Communications 10:637 (2019)
Pyrochlore systems are ideally suited to the exploration of geometrical frustration in three dimensions, and their rich phenomenology encompasses topological order and fractional excitations. Classical spin ices provide the first context in which it
Externí odkaz:
http://arxiv.org/abs/1902.07179
Publikováno v:
Phys. Rev. Materials 2, 111405 (2018)
Barlowite, Cu$_{4}$(OH)$_{6}$FBr, has attracted much attention as the parent compound of a new series of quantum spin liquid candidates, Zn$_{x}$Cu$_{4-x}$(OH)$_{6}$FBr. While it is known to undergo a magnetic phase transition to a long-range ordered
Externí odkaz:
http://arxiv.org/abs/1810.01684
Autor:
Wawrzyńczak, R., Tanaka, Y., Yoshida, M., Okamoto, Y., Manuel, P., Casati, N., Hiroi, Z., Takigawa, M., Nilsen, G. J.
We present the results of a combined $^7$Li NMR and diffraction study on LiGa$_{0.95}$In$_{0.05}$Cr$_4$O$_8$, a member of LiGa$_{1-x}$In$_{x}$Cr$_4$O$_8$ "breathing" pyrochlore family. Via specific heat and NMR measurements, we find that the complex
Externí odkaz:
http://arxiv.org/abs/1706.08409