512 citations · 4k across the 56 of their papers we have counts for
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Low-energy spin excitations in optimally doped CaFeCoAsF superconductor studied with inelastic neutron scattering
Mingwei Ma, Philippe Bourges, Yvan Sidis +4
There are few inelastic neutron scattering (INS) reports on the superconducting single crystals of FeAs-1111 system, even though it was first discovered in 2008, due to the extreme…
Electron-momentum dependence of electron-phonon coupling underlies dramatic phonon renormalization in YNiBC
Philipp Kurzhals, Geoffroy Kremer, Thomas Jaouen +12
Electron-phonon coupling, i.e., the scattering of lattice vibrations by electrons and vice versa, is ubiquitous in solids and can lead to emergent ground states such as superconduc…
Polarized neutron scattering studies of magnetic excitations in iron-selenide superconductor (LiFe)ODFeSe ( = 41 K)
Die Hu, Yu Feng, Jitae T. Park +5
We report polarized neutron scattering measurements of the low energy spin fluctuations of the iron-selenide superconductor LiFeODFeSe below and above its supercond…
Direct observation of spin excitation anisotropy in the paramagnetic orthorhombic state of BaFeNiAs
Haoran Man, Rui Zhang, J. T. Park +4
We use transport and inelastic neutron scattering measurements to investigate single crystals of iron pnictide BaFeNiAs (), which exhibit a tetragonal…
Orbital selective neutron spin resonance in underdoped superconducting NaFeCoAs
Weiyi Wang, J. T. Park, Rong Yu +6
We use neutron scattering to study the electron-doped superconducting NaFeCoAs ( K), which has co-existing static antiferromagnetic (AF) order (…
Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in BaFeAs (Co, Ni)
David W. Tam, Yu Song, Haoran Man +22
We use neutron diffraction and muon spin relaxation to study the effect of in-plane uniaxial pressure on the antiferromagnetic (AF) orthorhombic phase in BaFeAs and its Co-…
Transition from sign-reversed to sign-preserved Cooper-pairing symmetry in sulfur-doped iron selenide superconductors
Qisi Wang, J. T. Park, Yu Feng +11
An essential step toward elucidating the mechanism of superconductivity is to determine the sign/phase of superconducting order parameter, as it is closely related to the pairing i…
Electronic nematic correlations in the stress free tetragonal state of BaFeNiAs
Haoran Man, Xingye Lu, Justin S. Chen +9
We use transport and neutron scattering to study electronic, structural, and magnetic properties of the electron-doped BaFeNiAs iron pnictides in the external stres…
Possible realization of an antiferromagnetic Griffiths phase in Ba[Fe(1-x)Mn(x)](2)As(2)
D. S. Inosov, G. Friemel, J. T. Park +15
We investigate magnetic ordering in metallic Ba[Fe(1-x)Mn(x)](2)As(2) and discuss the unusual magnetic phase, which was recently discovered for Mn concentrations x > 10%. We argue…
Similar zone-center gaps in the low-energy spin-wave spectra of NaFeAs and BaFe2As2
J. T. Park, G. Friemel, T. Loew +10
We report results of inelastic-neutron-scattering measurements of low-energy spin-wave excitations in two structurally distinct families of iron-pnictide parent compounds: Na(1-δ)F…
Reciprocal-space structure and dispersion of the magnetic resonant mode in the superconducting phase of Rb(x)Fe(2-y)Se2 single crystals
G. Friemel, J. T. Park, T. A. Maier +8
Inelastic neutron scattering is employed to study the reciprocal-space structure and dispersion of magnetic excitations in the normal and superconducting states of single-crystalli…
Dispersion and damping of zone-boundary magnons in the noncentrosymmetric superconductor CePt3Si
D. S. Inosov, P. Bourges, A. Ivanov +3
Inelastic neutron scattering (INS) is employed to study damped spin-wave excitations in the noncentrosymmetric heavy-fermion superconductor CePt3Si along the antiferromagnetic Bril…
Magnetic Resonant Mode in the Low-Energy Spin-Excitation Spectrum of Superconducting Rb2Fe4Se5 Single Crystals
J. T. Park, G. Friemel, Yuan Li +8
We have studied the low-energy spin-excitation spectrum of the single-crystalline Rb2Fe4Se5 superconductor (Tc = 32 K) by means of inelastic neutron scattering. In the superconduct…
Symmetry of spin excitation spectra in the tetragonal paramagnetic and superconducting phases of 122-ferropnictides
J. T. Park, D. S. Inosov, A. Yaresko +16
We study the symmetry of spin excitation spectra in 122-ferropnictide superconductors by comparing the results of first-principles calculations with inelastic neutron scattering (I…
Neutron scattering study and analytical description of the spin excitation spectrum of twin-free YBa(2)Cu(3)O(6.6)
V. Hinkov, B. Keimer, A. Ivanov +3
We present a comprehensive inelastic neutron scattering study of the magnetic excitations in twin-free YBa(2)Cu(3)O(6.6) (Tc=61 K) for 5 K < T < 290 K. Taking full account of the i…
Dispersion of the odd magnetic resonant mode in near-optimally doped Bi2Sr2CaCu2O8+d
B. Fauqué, Y. Sidis, L. Capogna +6
We report a neutron scattering study of the spin excitation spectrum in the superconducting state of slightly overdoped Bi2Sr2CaCu2O8+d system (Tc=87 K). We focus on the dispersion…
Resonant magnetic excitations at high energy in superconducting
S. Pailhes, Y. Sidis, P. Bourges +5
A detailed inelastic neutron scattering study of the high temperature superconductor provides evidence of new resonant magnetic features, in addition to the…
Two resonant magnetic modes in an overdoped high- superconductor
S. Pailhes, Y. Sidis, P. Bourges +8
A detailed inelastic neutron scattering study of the overdoped high temperature copper oxide superconductor reveals two distinct magnetic resonan…
Spin Fluctuations in the Underdoped High-Tc Cuprate La1.93Sr0.07CuO4
H. Hiraka, Y. Endoh, M. Fujita +4
We performed magnetic inelastic neutron-scattering experiments on La(1.93)Sr(0.07)CuO(4) over a wide range of E and T;2 < E < 44 meV and 1.5 < T < 300 K. The dynamic susceptibility…
Magnetic resonance peak and nonmagnetic impurities
Y. Sidis, P. Bourges, B. Keimer +6
Nonmagnetic Zn impurities are known to strongly suppress superconductivity. We review their effects on the spin excitation spectrum in , as investigated by inel…
The Spin Excitation Spectrum in Superconducting
P. Bourges, Y. Sidis, H. F. Fong +4
A comprehensive inelastic neutron scattering study of magnetic excitations in the near-optimally doped high-temperature superconductor is presented. T…
Resonant Spin Excitation in an Overdoped High Temperature Superconductor
H. He, Y. Sidis, P. Bourges +8
An inelastic neutron scattering study of overdoped Bi_2Sr_2CaCu_2O_{8+δ} $ (T_c = 83 K) has revealed a resonant spin excitation in the superconducting state. The mode energy is E_r…
Spin Susceptibility in Underdoped
H. F. Fong, P. Bourges, Y. Sidis +6
We report a comprehensive polarized and unpolarized neutron scattering study of the evolution of the dynamical spin susceptibility with temperature and doping in three underdoped s…
Spin dynamics in high- superconductors
Ph. Bourges, Y. Sidis, H. F. Fong +6
Key features of antiferromagnetic dynamical correlations in high- superconductors cuprates are discussed. In underdoped regime, the sharp resonance peak, occuring exclusively…