Zobrazeno 1 - 10
of 171
pro vyhledávání: '"Proffen, Th."'
Autor:
Park, Pyeongjae, Sala, G., Proffen, Th., Stone, Matthew B., Christianson, Andrew D., May, Andrew F.
Publikováno v:
Phys. Rev. B 109, 014426 (2024)
Square-lattice systems offer a direct route for realizing 2D quantum magnetism with frustration induced by competing interactions. In this work, the square-lattice materials YbBi2IO4 and YbBi2ClO4 were investigated using a combination of magnetizatio
Externí odkaz:
http://arxiv.org/abs/2401.05283
Akademický článek
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Autor:
Ross, K. A., Proffen, Th., Dabkowska, H. A., Quilliam, J. A., Yaraskavitch, L. R., Kycia, J. B., Gaulin, B. D.
Recent neutron scattering and specific heat studies on the pyrochlore Yb2Ti2O7 have revealed variations in its magnetic behavior below 265mK. In the best samples, a sharp anomaly in the specific heat is observed at T=265mK. Other samples, especially
Externí odkaz:
http://arxiv.org/abs/1208.2281
Publikováno v:
Phys. Rev. B 81, 144113 (2010) [9 pages]
The oxide pyrochlore Bi$_2$Ti$_2$O$_6$O$^\prime$ is known to be associated with large displacements of Bi and O$^\prime$ atoms from their ideal crystallographic positions. Neutron total scattering, analyzed in both reciprocal and real space, is emplo
Externí odkaz:
http://arxiv.org/abs/1001.1368
Autor:
Sundaram, N., Jiang, Y., Anderson, I. E., Belanger, D. P., Booth, C. H., Bridges, F., Mitchell, J. F., Proffen, Th., Zheng, H.
Publikováno v:
Phys. Rev. Lett. 102, 026401 (2009)
The combined local structure techniques, extended x-ray absorption fine structure (EXAFS) and neutron pair distribution function analysis, have been used for temperatures 4 <= T <= 330 K to rule out a large Jahn-Teller (JT) distortion of the Co-O bon
Externí odkaz:
http://arxiv.org/abs/0902.0343
Publikováno v:
Inorg. Chem., 47 (7), 2569-2575 (2008)
Crystal structures of a series of La1-xCexIn3 (x = 0.02, 0.2, 0.5, or 0.8) intermetallic compounds have been investigated by both neutron and X-ray diffraction, and their physical properties have been characterized by magnetic susceptibility and spec
Externí odkaz:
http://arxiv.org/abs/0806.1756
Autor:
Bozin, E. S., Schmidt, M., DeConinck, A. J., Paglia, G., Mitchell, J. F., Chatterji, T., Radaelli, P. G., Proffen, Th., Billinge, S. J. L.
The detailed evolution of the magnitude of the local Jahn-Teller (JT) distortion in La_{1-x} Ca_x Mn O_3 is obtained across the phase diagram for 0 < x < 0.5 from high quality neutron diffraction data using the atomic pair distribution function (PDF)
Externí odkaz:
http://arxiv.org/abs/cond-mat/0609485
Publikováno v:
Phys. Rev. B 74 (2006) 024413(1-6).
We have investigated the structural, magnetic, thermodynamic, and dielectric properties of polycrystalline CoCr$_2$O$_4$, an insulating spinel exhibiting both ferrimagnetic and spiral magnetic structures. Below $T_c$ = 94 K the sample develops long-r
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603307
Autor:
Campi, G., Cappelluti, E., Proffen, Th., Qiu, X., Bozin, E. S., Billinge, S. J. L., Agrestini, S., Saini, N. L., Bianconi, A.
Publikováno v:
Eur. Phys. J. B 52, 15 (2006)
We have studied the evolution with temperature of the local as well as the average crystal structure of MgB$_2$ using the real-space atomic pair distribution function (PDF) measured by high resolution neutron powder diffraction. We have investigated
Externí odkaz:
http://arxiv.org/abs/cond-mat/0601656
Autor:
McLain, S. E., Tennant, D. A., Turner, J. F. C., Barnes, T., Dolgos, M. R., Proffen, Th., Sales, B. C., Bewley, R. I.
Although the precise mechanism of high-Tc superconductivity in the layered cuprates remains unknown, it is generally thought that strong 2D Heisenberg antiferromagnetism combined with disruptive hole doping is an essential aspect of the phenomenon. I
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509194