Zobrazeno 1 - 10
of 1 170
pro vyhledávání: '"Neilson, J. R."'
Autor:
Sarkis, C. L., Tarne, M. J., Neilson, J. R., Cao, H. B., Coldren, E., Gelfand, M. P., Ross, K. A.
Publikováno v:
Phys. Rev. B 101, 184417 (2020)
Magnetic frustration in Fe$_3$PO$_4$O$_3$ has been shown to produce to an unusual magnetic state below T$_N = 163$ K, where incommensurate antiferromagnetic order is restricted to nanosized needle-like domains, as inferred from neutron powder diffrac
Externí odkaz:
http://arxiv.org/abs/1910.08818
Autor:
Hester, Gavin, Nair, H. S., Reeder, T., Yahne, D. R., DeLazzer, T. N., Berges, L., Ziat, D., Neilson, J. R., Aczel, A. A., Sala, G., Quilliam, J. A., Ross, K. A.
Publikováno v:
Phys. Rev. Lett. 123, 027201 (2019)
The quantum dimer magnet (QDM) is the canonical example of quantum magnetism. The QDM state consists of entangled nearest-neighbor spin dimers and often exhibits a field-induced triplon Bose-Einstein condensate (BEC) phase. We report on a new QDM in
Externí odkaz:
http://arxiv.org/abs/1810.13096
Publikováno v:
Phys. Rev. B 96, 214431 (2017)
The insulating magnetic material Fe3PO4O3 features a non-centrosymmetric lattice composed of Fe^{3+} triangular units. Frustration, due to competing near neighbor ($J_1$) and next nearest neighbor ($J_2$) antiferromagnetic interactions, was recently
Externí odkaz:
http://arxiv.org/abs/1710.00051
Autor:
Sarkar, R., Kamusella, S., Braeuninger, S. A., Holenstein, S., Orain, J. -C., Luetkens, H., Grinenko, V., Tarne, M. J., Neilson, J. R., Ross, K. A., Klauss, H. -H.
The 3$d$-electronic spin dynamics and the magnetic order in Fe$_3$PO$_4$O$_3$ were investigated by muon spin rotation and relaxation ($\mu$SR) and $^{57}$Fe M\"ossbauer spectroscopy. Zero-field (ZF)-$\mu$SR and $^{57}$Fe M\"ossbauer studies confirm s
Externí odkaz:
http://arxiv.org/abs/1707.07433
Publikováno v:
Mater. Horiz. 2, 76-80 (2015)
LiZn$_2$Mo$_3$O$_8$ is an electrically insulating geometrically frustrated antiferromagnet in which inorganic Mo$_3$O$_{13}$ clusters each behaves as a single $S = 1/2$ unit, with the clusters arranged on a two-dimensional triangular lattice. Prior r
Externí odkaz:
http://arxiv.org/abs/1608.05022
Autor:
Mourigal, M., Wu, Shan, Stone, M. B., Neilson, J. R., Caron, J. M., McQueen, T. M., Broholm, C. L.
Publikováno v:
Phys. Rev. Lett. 115, 047401 (2015)
Iron pnictides and selenides display a variety of unusual magnetic phases originating from the interplay between electronic, orbital, and lattice degrees of freedom. Using powder inelastic neutron scattering on the two-leg ladder BaFe2Se3, we fully c
Externí odkaz:
http://arxiv.org/abs/1411.3337
Publikováno v:
Phys. Rev. B (Rapid) 85, 180405 (2012)
Here we show that the 2.80(8) {\mu}B/Fe block antiferromagnetic order of BaFe2Se3 transforms into stripe antiferromagnetic order in KFe2Se3 with a decrease in moment to 2.1(1) {\mu}B/Fe. This reduction is larger than expected from the change in elect
Externí odkaz:
http://arxiv.org/abs/1202.3676
Publikováno v:
Phys. Rev. B (Rapid) 84, 180409 (2011)
We report long-range ordered antiferromagnetism concomitant with local iron displacements in the spin-ladder compound BaFe$_2$Se$_3$. Short-range magnetic correlations, present at room temperature, develop into long-range antiferromagnetic order belo
Externí odkaz:
http://arxiv.org/abs/1108.2928
Using an analytical theory, experimental terahertz time-domain spectroscopy data and numerical evidence, we demonstrate that the frequency dependence of the absorption coupling coefficient between far-infrared photons and atomic vibrations in disorde
Externí odkaz:
http://arxiv.org/abs/cond-mat/0604205
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