Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Parker, D"'
It is noteworthy that chemical substitution of BaFe2As2 (122) with the noble elements Cu and Au gives superconductivity with a maximum Tc=3 K, while Ag substitution (Ag-122) stays antiferromagnetic. For Ba(Fe1-xTMx)2As2, TM= Cu, Au, or Ag, and by dop
Externí odkaz:
http://arxiv.org/abs/2002.04662
Autor:
Li, L., Zheng, Q., Zou, Q., Rajput, S., Ijaduola, A. O., Wu, Z., Wang, X. P., Cao, H. B., Chi, M., Gai, Z., Parker, D., Sefat, A. S.
Publikováno v:
Scientific Report 7 (2017), 949
Quantum materials such as antiferromagnets or superconductors are complex in that chemical, electronic, and spin phenomena at atomic scales can manifest in their collective properties. Although there are some clues for designing such materials, they
Externí odkaz:
http://arxiv.org/abs/1612.02839
Autor:
Ye, G. Z., Cheng, J. -G., Yan, J. -Q., Sun, J. P., Matsubayashi, K., Yamauchi, T., Okada, T., Zhou, Q., Parker, D. S., Sales, B. C., Uwatoko, Y.
Publikováno v:
Phys. Rev. B 94, 224508 (2016)
Prior to the superconducting transition at Tc = 2.3 K, Mo3Sb7 undergoes a symmetry-lowering, cubic-to-tetragonal structural transition at Ts = 53 K. We have monitored the pressure dependence of these two transitions by measuring the resistivity of Mo
Externí odkaz:
http://arxiv.org/abs/1611.01986
Publikováno v:
Physica C: Superconductivity and its applications 531 (2016), 25
Layered thallium copper chalcogenides can form single, double, or triple layers of Cu-Ch separated by Tl sheets. Here we report on the preparation and properties of Tl-based materials of TlCu2Se2, TlCu4S3, TlCu4Se3 and TlCu6S4, and compare to reports
Externí odkaz:
http://arxiv.org/abs/1603.07698
Autor:
Kuhn, S. J., Kidder, M. K., Chance, W. M., Cruz, C. dela, McGuire, M. A., Parker, D. S., Li, L., Debeer-Schmitt, L., Ermentrout, J., Littrell, K., Eskildsen, M. R., Sefat, A. S.
Publikováno v:
Physica C: Superconductivity and its applications 534 (2017), 29-36
Structure and composition of iron chalcogenides have a delicate relationship with magnetism and superconductivity. In this report we investigate the iron sulfide layered tetragonal phase (t-FeS), and compare with three-dimensional hexagonal phase (h-
Externí odkaz:
http://arxiv.org/abs/1603.01598
Publikováno v:
Scientific Reports 6 (2016), 21660
Within the BaFe2As2 crystal lattice, we partially substitute thallium for barium and report the effects of interlayer coupling in Ba1-xTlxFe2As2 crystals. We demonstrate the unusual effects of magneto-elastic coupling and charge doping in this iron-a
Externí odkaz:
http://arxiv.org/abs/1511.02400
Publikováno v:
Physical Review B 92, 064507 (2015)
Mo$_3$Sb$_7$ single crystals lightly doped with Cr, Ru, or Te are studied in order to explore the interplay between superconductivity, magnetism, and the cubic-tetragonal structural transition. The structural transition at 53\,K is extremely sensitiv
Externí odkaz:
http://arxiv.org/abs/1507.06192
Publikováno v:
Physical Review B 91, 104511 (2015)
Here we report further investigation on the thermodynamic, and transport properties, and the first assessment of theoretical calculations for the BiS2-layered Bi3O2S3 superconductor. The polycrystalline sample is synthesized with the superconducting
Externí odkaz:
http://arxiv.org/abs/1412.3070
Autor:
Taylor, A. E., Ewings, R. A., Perring, T. G., Parker, D. R., Ollivier, J., Clarke, S. J., Boothroyd, A. T.
Publikováno v:
J. Phys.: Condens. Matter 25 425701 (2013)
We report neutron inelastic scattering measurements on polycrystalline LaFePO and Sr2ScO3FeP, two members of the iron phosphide families of superconductors. No evidence is found for any magnetic fluctuations in the spectrum of either material in the
Externí odkaz:
http://arxiv.org/abs/1302.5057
Autor:
Wright, J. D., Lancaster, T., Franke, I., Steele, A. J., Möller, J. S., Pitcher, M. J., Corkett, A. J., Parker, D. R., Free, D. G., Pratt, F. L., Baker, P. J., Clarke, S. J., Blundell, S. J.
The interplay and coexistence of superconducting, magnetic and structural order parameters in NaFe{1-x}Co{x}As has been studied using SQUID magnetometry, muon-spin rotation and synchrotron x-ray powder diffraction. Substituting Fe by Co weakens the o
Externí odkaz:
http://arxiv.org/abs/1112.0419