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24 papers
Doping dependence of the spin excitations in Fe-based superconductors Fe1+yTe1-xSex
A. D. Christianson, M. D. Lumsden, K. Marty +10
The Fe1+yTe1-xSex series of materials is one of the prototype families of Fe-based superconductors. To provide further insight into these materials we present systematic inelastic…
Long-Range Magnetic Interactions in the Multiferroic Antiferromagnet
Feng Ye, Randy S. Fishman, Jaime A. Fernandez-Baca +6
The spin-wave excitations of the multiferroic have been measured in its low-temperature collinear commensurate phase using high-resolution inelastic neutron scattering…
Magnetic and multiferroic phases of single-crystalline MnCoWO
R. P. Chaudhury, F. Ye, J. A. Fernandez-Baca +5
The magnetic and multiferroic phase diagram of MnCoWO single crystals is investigated by means of magnetic, heat capacity, dielectric, polarization, and neutr…
Unusual Relationship between Magnetism and Superconductivity in FeTeSe
H. A. Mook, M. D. Lumsden, A. D. Christianson +8
We use neutron scattering, to study magnetic excitations in crystals near the ideal superconducting composition of FeTeSe. Two types of excitations are found, a res…
Evolution of spin excitations into the superconducting state in FeTe1-xSex
M. D. Lumsden, A. D. Christianson, E. A. Goremychkin +11
The nature of the superconducting state in the recently discovered Fe-based superconductors1-3 is the subject of intense scrutiny. Neutron scattering investigations have already el…
Detection of the Unusual Magnetic Orders in the Pseudogap Region of a High-Temperature Superconducting YBa2Cu3O6.6 Crystal by Muon-Spin Relaxation
J. E. Sonier, V. Pacradouni, S. A. Sabok-Sayr +4
We present muon spin relaxation (muSR) measurements on a large YBa2Cu3O6.6 single crystal in which two kinds of unusual magnetic order have been detected in the pseudogap region by…