Scott V. Carr

Structure and composition of the superconducting phase in alkali iron selenide K y Fe 1.6 + x Se 2

We use neutron diffraction to study the temperature evolution of the average structure and local lattice distortions in insulating and superconducting potassium iron selenide

Critical quadrupole fluctuations and collective modes in iron pnictide superconductors

{K}_{y}{\mathrm{Fe}}_{1.6+x}{\mathrm{Se}}_{2}

In-plane spin excitation anisotropy in the paramagnetic state of NaFeAs

. In the high temperature paramagnetic state, both materials have a single phase with a crystal structure similar to that of the BaFe

Distinguishing s(+/-) and s(++) electron pairing symmetries by neutron spin resonance in superconducting NaFe0.935Co0.045As

{}_{2}

Uniaxial pressure effect on structural and magnetic phase transitions in NaFeAs and its comparison with as-grown and annealed BaFe2As2

As

Electron doping evolution of the neutron spin resonance in NaFe1-xCoxAs

{}_{2}

Paramagnetic spin excitations in insulating Rb0.8Fe1.6Se2

family of iron pnictides. While the insulating

Microscopic coexistence of a two-component incommensurate spin density wave with superconductivity in underdoped NaFe0.983Co0.017As

{K}_{y}{\mathrm{Fe}}_{1.6+x}{\mathrm{Se}}_{2}

Effect of Li-deficiency impurities on the electron-overdoped LiFeAs superconductor

forms a

Electron doping evolution of the magnetic excitations in BaFe2-xNixAs2

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