Zobrazeno 1 - 10
of 659
pro vyhledávání: '"Kulda, J"'
Autor:
Paściak, M., Ondrejkovic, P., Vanek, P., Drahokoupil, J., Steciuk, G., Palatinus, L., Welberry, T. R., Kulda, J., Fischer, H. E., Hlinka, J., Buixaderas, E.
Publikováno v:
Phys. Rev. B 99, 104102 (2019)
Neutron pair distribution function analysis and first principles calculations have been employed to study short-range correlations in heavily disordered dielectric material Sr$_x$Ba$_{1-x}$Nb$_2$O$_6$ ($x=0.35, 0.5$ and 0.61). The combination of meth
Externí odkaz:
http://arxiv.org/abs/1811.07823
Publikováno v:
Phys. Rev. Lett. 122, 047004 (2019)
Triplet pairing in Sr2RuO4 was initially suggested based on the hypothesis of strong ferromagnetic spin fluctuations. Using polarized inelastic neutron scattering, we accurately determine the full spectrum of spin fluctuations in Sr2RuO4. Besides the
Externí odkaz:
http://arxiv.org/abs/1808.05855
Autor:
Croft, T. P., Blackburn, E., Kulda, J., Liang, Ruixing, Bonn, D. A., Hardy, W. N, Hayden, S. M.
Publikováno v:
Phys. Rev. B 98, 016502 (2018)
The issues raised in the preceding comment of Bourges et al. [arXiv:1710.08173, Phys. Rev. B 98, 016501 (2018)] are shown to be unfounded. We highlight the complications caused by inhomogeneous beam polarization that can occur when using polarized ne
Externí odkaz:
http://arxiv.org/abs/1807.06250
We use transport and inelastic neutron scattering measurements to investigate single crystals of iron pnictide BaFe$_{2-x}$Ni$_{x}$As$_{2}$ ($x=0,0.03$), which exhibit a tetragonal-to-orthorhombic structural transition at $T_s$ and stripe antiferroma
Externí odkaz:
http://arxiv.org/abs/1802.02713
Publikováno v:
Phys. Rev. Lett. 120, 167601 (2018)
The three dimensional distribution of the X-ray diffuse scattering intensity of BaTiO$_3$ has been recorded in a synchrotron experiment and simultaneously computed using molecular dynamics simulations of a shell-model. Together these have allowed the
Externí odkaz:
http://arxiv.org/abs/1711.06566
Autor:
Croft, T. P., Blackburn, E., Kulda, J., Liang, Ruixing, Bonn, D. A., Hardy, W. N., Hayden, S. M.
Publikováno v:
Phys. Rev. B 96, 214504 (2017)
It has been proposed that the pseudogap state of underdoped cuprate superconductors may be due to a transition to a phase which has circulating currents within each unit cell. Here, we use polarized neutron diffraction to search for the corresponding
Externí odkaz:
http://arxiv.org/abs/1709.06128
Autor:
Man, Haoran, Lu, Xingye, Chen, Justin S., Zhang, Rui, Zhang, Wenliang, Luo, Huiqian, Kulda, J., Ivanov, A., Keller, T., Morosan, Emilia, Si, Qimiao, Dai, Pengcheng
Publikováno v:
Phys. Rev. B 92, 134521 (2015)
We use transport and neutron scattering to study electronic, structural, and magnetic properties of the electron-doped BaFe$_{2-x}$Ni$_x$As$_2$ iron pnictides in the external stress free detwinned state. Using a specially designed in-situ mechanical
Externí odkaz:
http://arxiv.org/abs/1507.05423
Autor:
Zhang, Chenglin, Song, Yu, Regnault, L. P., Su, Yixi, Enderle, M., Kulda, J., Tan, Guotai, Sims, Zachary C., Egami, Takeshi, Si, Qimiao, Dai, Pengcheng
We use polarized inelastic neutron scattering (INS) to study spin excitations in superconducting NaFe0.985Co0.015As (C15) with static antiferromagnetic (AF) order along the a-axis of the orthorhombic structure and NaFe0.935Co0.045As (C45) without AF
Externí odkaz:
http://arxiv.org/abs/1409.6416
Autor:
Gaw, S. M., Lewtas, H. J., McMorrow, D. F., Kulda, J., Ewings, R. A., Perring, T. G., McKinnon, R. A., Balakrishnan, G., Prabhakaran, D., Boothroyd, A. T.
Publikováno v:
Phys. Rev. B 91 (2015) 035103
We report neutron inelastic scattering measurements and analysis of the spectrum of magnons propagating within the Fe2O4 bilayers of LuFe2O4. The observed spectrum is consistent with six magnetic modes and a single prominent gap, which is compatible
Externí odkaz:
http://arxiv.org/abs/1406.7418
Publikováno v:
Phys. Rev. B 84, 104513 (2011)
We use inelastic neutron scattering with spin polarization analysis to study the magnetic excitations in the normal and superconducting states of YBa2Cu3O6.9. Polarization analysis allows us to determine the spin polarization of the magnetic excitati
Externí odkaz:
http://arxiv.org/abs/1101.5934