Zobrazeno 61 - 70
of 12 037
pro vyhledávání: '"Jin, R."'
Autor:
Ahilan, K., Balasubramaniam, J., Ning, F. L., Imai, T., Sefat, A. S., Jin, R., McGuire, M. A., Sales, B. C., Mandrus, D.
Publikováno v:
J. Phys.: Condens. Matter 20 (2008) 472201. (Fast Track Communications)
Application of pressures or electron-doping through Co substitution into Fe sites transforms the itinerant antiferromagnet BaFe(2)As(2) into a superconductor with the Tc exceeding 20K. We carried out systematic transport measurements of BaFe(2-x)Co(x
Externí odkaz:
http://arxiv.org/abs/0810.0287
Autor:
Imai, T., Ahilan, K., Ning, F. L., McGuire, M. A., Sefat, A. S., Jin, R., Sales, B. C., Mandrus, D.
Publikováno v:
J. Phys. Soc. Jpn. 77 (2008) Supplement C pp.47-53
We will probe the intrinsic behavior of spin susceptibility chi_(spin) in the LaFeAsO(1-x)F(x) superconductor (x ~ 0.1, Tc ~ 27K) using 19-F and 75-As NMR techniques. Our new results firmly establish the pseudo-gap behavior with Delta_(PG)/kB ~ 140K.
Externí odkaz:
http://arxiv.org/abs/0810.0305
Autor:
Haraldsen, J. T., Stone, M. B., Lumsden, M. D., Mamontov, E., Barnes, T., Jin, R., Taylor, J. W., Fernandez-Alonso, F.
We report inelastic and elastic neutron scattering, magnetic susceptibility, and heat capacity measurements of polycrystalline sodium ruthenate (Na$_3$RuO$_4$). Previous work suggests this material consists of isolated tetramers of $S=3/2$ Ru$^{5+}$
Externí odkaz:
http://arxiv.org/abs/0808.4150
Autor:
Ning, F. L., Ahilan, K., Imai, T., Sefat, A. S., Jin, R., McGuire, M. A., Sales, B. C., Mandrus, D.
Publikováno v:
J. Phys. Soc. Jpn. 77 (2008) 103705
We report an NMR investigation of the superconductivity in BaFe(2)As(2) induced by Co doping (Tc=22K). We demonstrate that Co atoms form an alloy with Fe atoms and donate carriers without creating localized moments. Our finding strongly suggests that
Externí odkaz:
http://arxiv.org/abs/0808.1420
Autor:
Pan, M. H., He, X. B., Li, G. R., Wendelken, J. F., Jin, R., Sefat, A. S., McGuire, M. A., Sales, B. C., Mandrus, D., Plummer, E. W.
The discovery of superconductivity with a critical temperature exceeding 55 K in the iron-oxypnictides and related compounds has quite suddenly given the community a new set of materials - breaking the tyranny of copper. This new class of materials r
Externí odkaz:
http://arxiv.org/abs/0808.0895
Autor:
Neupane, M., Richard, P., Pan, Z. -H., Xu, Y., Jin, R., Mandrus, D., Dai, X., Fang, Z., Wang, Z., Ding, H.
Publikováno v:
Physical Review Letters 103, 097001 (2009)
Electrons in a simple correlated system behave either as itinerant charge carriers or as localized moments. However, there is growing evidence for the coexistence of itinerant electrons and local moments in transition metals with nearly degenerate $d
Externí odkaz:
http://arxiv.org/abs/0808.0346
Autor:
Bondino, F., Magnano, E., Malvestuto, M., Parmigiani, F., McGuire, M. A., Sefat, A. S., Sales, B. C., Jin, R., Mandrus, D., Plummer, E. W., Singh, D. J., Mannella, N.
Publikováno v:
Phys. Rev. Lett. 101, 267001 (2008)
The electronic structure in the normal state of CeFeAsO0.89F0.11 oxypnictide superconductors has been investigated with x-ray absorption and photoemission spectroscopy. All the data exhibit signatures of Fe d-electron itinerancy. Exchange multiplets
Externí odkaz:
http://arxiv.org/abs/0807.3781
Autor:
Angst, M., Hermann, R. P., Christianson, A. D., Lumsden, M. D., Lee, C., Whangbo, M. -H., Kim, J. -W., Ryan, P. J., Nagler, S. E., Tian, W., Jin, R., Sales, B. C., Mandrus, D.
Publikováno v:
Phys. Rev. Lett. 101, 227601 (2008)
X-ray scattering by multiferroic LuFe2O4 is reported. Below 320 K, superstructure reflections indicate an incommensurate charge order with propagation close to (1/3,1/3,3/2). The corresponding charge configuration, also found by electronic structure
Externí odkaz:
http://arxiv.org/abs/0807.3527
Autor:
Christianson, A. D., Lumsden, M. D., Delaire, O., Stone, M. B., Abernathy, D. L., McGuire, M. A., Sefat, A. S., Jin, R., Sales, B. C., Mandrus, D., Mun, E. D., Canfield, P. C., Lin, J. Y. Y., Lucas, M., Kresch, M., Keith, J. B., Fultz, B., Goremychkin, E. A., McQueeney, R. J.
Publikováno v:
Phys. Rev. Lett. 101, 157004 (2008)
We have studied the phonon density of states (PDOS) in LaFeAsO1-xFx with inelastic neutron scattering methods. The PDOS of the parent compound(x=0) is very similar to the PDOS of samples optimally doped with fluorine to achieve the maximum Tc (x~0.1)
Externí odkaz:
http://arxiv.org/abs/0807.3370
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.