M. B. Stone

Evolution of spin excitations into the superconducting state in FeTe1-xSex (2009)

Lumsden, M. D., Christianson, A. D., Goremychkin, E. A., Nagler, S. E., Mook, H. A., Stone, M. B., ...

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 elucidated a strong...

Spin Excitations in BaFe1.84Co0.16As2 Superconductor Observed by Inelastic Neutron Scattering (2009)

Parshall, D., Lokshin, K. A., Niedziela, Jennifer, Christianson, A. D., Lumsden, M. D., Mook, H. A., ...

Superconductivity appears to compete against the spin-density-wave in Fe pnictides. However, optimally cobalt doped samples show a quasi-two-dimensional spin excitation centered at the (0.5, 0.5, L)...

Neutron powder diffraction atomic pair distribution function analysis using the ARCS chopper spectrometer at the Spallation Neutron Source (2009)

Bozin, E. S., Juhas, P., Zhou, W., Stone, M. B., Abernathy, D. L., Huq, A., ...

The frst neutron powder diffraction based atomic pair distribution functions (PDFs) are reported from the new wide angular-range chopper spectrometer ARCS at the Spallation Neutron Source at Oak...

Two-dimensional resonant magnetic excitation in BaFe1.84Co0.16As2 (2008)

Lumsden, M. D., Christianson, A. D., Parshall, D., Stone, M. B., Nagler, S. E., MacDougall, G. J., ...

Inelastic neutron scattering measurements on single crystals of superconducting BaFe1.84Co0.16As2 reveal a magnetic excitation located at wavevectors (1/2 1/2 L) in tetragonal notation. On cooling...

Phonon softening and anomalous mode near the $x_{c}=0.5$ quantum critical point in Ca$_{2-x}$Sr$_{x}$RuO$_4$ (2008)

Moore, R. G., Lumsden, M. D., Stone, M. B., Zhang, Jiandi, Chen, Y., Lynn, J. W., ...

Inelastic neutron scattering is used to measure the temperature dependent phonon dispersion in Ca$_{2-x}$Sr$_{x}$RuO$_{4}$ ($x=0.4$, 0.6). The in-plane $\Sigma_{4}$ octahedral tilt mode softens...

Phonon Density of States of LaFeAsO1-xFx (2008)

Christianson, A. D., Lumsden, M. D., Delaire, O., Stone, M. B., Abernathy, D. L., McGuire, M. A., ...

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...

Spin-lozenge thermodynamics and magnetic excitations in Na$_3$RuO$_4$ (2008)

Haraldsen, J. T., Stone, M. B., Lumsden, M. D., Mamontov, E., Barnes, T., Jin, R., ...

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...

Phonon Density of States of LaFeAsO1-xFx (2008)

Christianson, A. D., Lumsden, M. D., Delaire, O., Stone, M. B., Abernathy, D. L., McGuire, M. A., ...

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...

Destruction of Neel order and appearance of superconductivity in electron-doped cuprates by oxygen annealing process (2008)

Li, Shiliang, Chi, Songxue, Zhao, Jun, Stone, M. B., Lynn, J. W., ...

We use thermodynamic and neutron scattering measurements to study the effect of oxygen annealing on the superconductivity and magnetism in Pr$_{0.88}$LaCe$_{0.12}$CuO$_{4-\delta}$. Although the...