Zobrazeno 1 - 10
of 235
pro vyhledávání: '"van Duijn J"'
The HORACE suite of programs has been developed to work with large multiple-measurement data sets collected from time-of-flight neutron spectrometers equipped with arrays of position-sensitive detectors. The software allows exploratory studies of the
Externí odkaz:
http://arxiv.org/abs/1604.05895
Autor:
van Duijn, J., Kim, K. H., Hur, N., Adroja, D. T., Bridges, F., Daoud-Aladine, A., Fernandez-Alonso, F., Ruiz-Bustos, R., Wen, J., Kearney, V., Huang, Q. Z., Cheong, S. -W., Nakatsuji, S., Broholm, C., Perring, T. G.
Publikováno v:
Phys. Rev. B 96, 094409 (2017)
The complex structure and magnetism of Pr$_{2-x}$Bi$_x$Ru$_2$O$_7$ was investigated by neutron scattering and EXAFS. Pr has an approximate doublet ground-state and the first excited state is a singlet. This overall crystal field level scheme is simil
Externí odkaz:
http://arxiv.org/abs/1407.0661
Autor:
Stock, C., Broholm, C., Demmel, F., Van Duijn, J., Taylor, J. W., Kang, H. J., Hu, R., Petrovic, C.
Publikováno v:
Phys. Rev. Lett. 109, 127201 (2012)
Spin fluctuations are reported near the magnetic field driven quantum critical point in YbRh2Si2. On cooling, ferromagnetic fluctuations evolve into incommensurate correlations located at q0=+/- (delta,delta) with delta=0.14 +/- 0.04 r.l.u. At low te
Externí odkaz:
http://arxiv.org/abs/1207.4411
Zero field muon spin relaxation (ZF-{\mu}SR) has been used to study the magnetic properties of the underdoped giant magnetoresistive ruthenocuprates (GMR) RuSr2Nd1.8-xY0.2CexCu2O10-d (x = 0.95, 0.80). The results show a gradual loss of initial asymme
Externí odkaz:
http://arxiv.org/abs/1207.0966
Autor:
Dreiser, J., Waldmann, O., Dobe, C., Carver, G., Ochsenbein, S. T., Sieber, A., Güdel, H. U., van Duijn, J., Taylor, J., Podlesnyak, A.
Publikováno v:
Phys. Rev. B 81, 024408 (2010)
We report on inelastic neutron scattering (INS) measurements on the molecular spin ring CsFe$_8$, in which eight spin-5/2 Fe(III) ions are coupled by nearest-neighbor antiferromagnetic Heisenberg interaction. We have recorded INS data on a non-deuter
Externí odkaz:
http://arxiv.org/abs/1001.3755
Autor:
van Duijn, J., Hur, N., Taylor, J. W., Qiu, Y., Huang, Q. Z., Cheong, S. -W., Broholm, C., Perring, T. G.
Publikováno v:
Physical Review B 77, 020405(R) (2008)
Spin correlations in the pyrochlore antiferromagnet Y_2Ru_2O_7 with Curie-Weiss temperature $\Theta_{CW}=-1100$ K and critical temperature T_N=77 K were examined through neutron scattering. For $T_N
Externí odkaz:
http://arxiv.org/abs/0707.2678
Autor:
Blackburn, E., Goodkind, J. M., Sinha, S. K., Hudis, J., Broholm, C., van Duijn, J., Frost, C. D., Kirichek, O., Down, R. B. E.
Publikováno v:
Phys. Rev. B 76, 024523 (2007)
The mean square atomic displacement in hcp-phase solid He-4 has been measured in crystals with a molar volume of 21.3 cm^3. It is temperature independent from 1 K to 140 mK, with no evidence for an anomaly in the vicinity of the proposed supersolid t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0702537
Autor:
Pantea, C., Migliori, A., Littlewood, P. B., Zhao, Y., Ledbetter, H., Kimura, T., Van Duijn, J., Kowach, G. R.
The negative thermal expansion (NTE) compound ZrW2O8 has been well-studied because it remains cubic with a nearly constant, isotropic NTE coefficient over a broad temperature range. However, its elastic constants seem just as strange as its volume be
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509220
Autor:
van Duijn, J., Kim, K. H., Hur, N., Adroja, D., Adams, M. A., Huang, Q. Z., Jaime, M., Cheong, S. -W., Broholm, C., Perring, T. G.
Publikováno v:
PRL 94, 177201 (2005)
We report that Bi doping drives Pr$_x$Bi$_{2-x}$Ru$_2$O$_7$ from an antiferromagnetic insulator ($x=2$) to a metallic paramagnet ($x\approx 1$) with a broad low $T$ maximum in $C/T$. Neutron scattering reveals local low energy spin excitations ($\hba
Externí odkaz:
http://arxiv.org/abs/cond-mat/0410065
Critical neutron scattering measurements have been performed on CsCo$_{0.83}$Mg$_{0.17}$Br$_3$, a dilute stacked triangular lattice (STL) Ising antiferromagnet (AF). A two component lineshape associated with the critical fluctuations appears at a tem
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207271