/ D. N. Argyriou [et al.]> // Phys. Rev. B. - 2010. -
Vol. 81,
Is. 22. - Ст. 220503,
DOI 10.1103/PhysRevB.81.220503. - Cited References: 34. - Work at Tulane was supported by the NSF under Grant No. DMR-0645305 (for materials) and the DOE under Grant No. DE-FG02-07ER46358 (for graduate students). Work at JHU was funded by the DOE under Grant No. DE-FG02-08ER46544. D.N.A. benefited from helpful discussions with Jan Zaanen and Alan Goldman and thanks the DFG for support under SPP 1458. M.M.K. is grateful to P. J. Hirschfeld for useful discussions and acknowledges support from RFBR (Grant No. 09-02-00127 ), OFN RAS program on strong electronic correlations, and the Russian FCP (Grant No. NK-589P/46).
. - ISSN 1098-0121
РУБ Physics, Condensed Matter
Аннотация: We report on inelastic
neutron-
scattering measurements that find itinerantlike incommensurate magnetic excitations in the normal state of superconducting FeTe0.6Se0.4 (T-c=14 K) at wave vector Q(inc) = (1/2 +/- epsilon, 1/2 -/+ epsilon) with epsilon = 0.09(1). In the superconducting state only the lower energy part of the spectrum shows significant changes by the formation of a gap and a magnetic resonance that follows the dispersion of the normal-state excitations. We use a four band model to describe the Fermi-surface topology of this iron-based superconductors with the extended s(+/-) symmetry and find that it qualitatively captures the salient features of these data.
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Держатели документа: [Argyriou, D. N.] Helmholtz Zentrum Berlin Mat & Energy, D-14109 Berlin, Germany
[Hiess, A.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
[Akbari, A.
Eremin, I.
Korshunov, M. M.] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
[Eremin, I.] Tech Univ Carolo Wilhelmina Braunschweig, Inst Math & Theoret Phys, D-38106 Braunschweig, Germany
[Korshunov, M. M.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Hu, Jin
Qian, Bin
Mao, Zhiqiang] Tulane Univ, Dept Phys, New Orleans, LA 70118 USA
[Qiu, Yiming] Natl Inst Stand & Technol, NIST Ctr
Neutron Res, Gaithersburg, MD 20899 USA
[Qiu, Yiming] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA
[Broholm, Collin] Johns Hopkins Univ, Inst Quantum Matter, Baltimore, MD 21218 USA
[Broholm, Collin] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
[Bao, W.] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China
ИФ СО РАН
Helmholtz-Zentrum Berlin fur Materialen und Energy, Hahn Meitner Platz 1, D-14109 Berlin, Germany
Institut Max von Laue-Paul Langevin, 6 rue Jules Horowitz, F-38042 Grenoble Cedex 9, France
Max-Planck-Institut fur Physik Komplexer Systeme, D-01187 Dresden, Germany
Institute fur Mathematische und Theoretische Physik, TU Braunschweig, D-38106 Braunschweig, Germany
L.V. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russian Federation
Department of Physics, Tulane University, New Orleans, LA 70118, United States
NIST Center for
Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States
Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, United States
Institute for Quantum Matter and Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, United States
Department of Physics, Renmin University of China, Beijing 100872, China
Department of Physics, University of Florida, Gainesville, FL 32611, United States
Доп.точки доступа: Argyriou, D. N.; Hiess, A.; Akbari, A.; Eremin, I.; Korshunov, M. M.; Коршунов, Максим Михайлович; Hu, J.; Qian, B.; Mao, Z. Q.; Qiu, Y. M.; Broholm, C.; Bao, W.