20 datasets found

Superconductivity (SC) in unconventional superconductors is believed to be related to magnetism. However, in AyFe1.6+xSe2 (A = K, Rb, Cs) system discovered in late 2010, the SC...

Quite recently, the high thermoelectric performance has been reported in the MgAgSb-based half Heusler alloys. The ZT values close to 1 at room temperature with a maximum of ZT...

We propose to measure the spin wave dispersion and intensities throughout the Brillouin zone of the single layer half-doped manganite Pr0.5Ca1.5MnO4, whose ground state has the...

The newly discovered AxFe2-ySe2 (A=K,Rb,Cs) compounds have attracted great interests because of their parent compounds are insulators instead of being metallic [2-6]....

We clearly observed incommensurate (IC) magnetic excitation in KFe2As2 above Tc with Ei=80 mev on ARCS at ORNL. Though we got beam time at LET, we wish to see how the IC changes...

Nanocomposites offer a promising route for enhancing thermoelectric (TE) efficiency (ZT), which depends on interrelated material properties like Seebeck Coefficient, electrical...

To understand the thermal conductivity suppression within PGEC titanate oxide thermoelectrics we hope to complement theoretical calculations performed on several perovskites...

We propose to measure the inelastic scattering S(Q,E) maps from gallium in its liquid phases across a wide range of temperatures. This proposal is based on a new prediction for...

Materials displaying ultralow lattice thermal conductivity (k_Lat) are crucial to realizing high performing thermoelectric materials to convert waste heat into electrical...

FeSe has a superconducting ordering temperature Tc = 9K. Superconductivity coexists with nematic order which is manifest most clearly by an orthorhombic distortion which sets in...

We find unusual antiferromagnetic order in Cu heavily overdoped BaFeCuAs2 with the order wave vector at (0.5 0.5 1). This anitiferromagnetic signal cannot come from the parent...

Recently, a new family of Fe-based superconductors has been discovered. Kx Fe2−δSe2 (KFS) is a strongly electron-doped compound with 122-type structure that is...

We find unusual antiferromagnetic order in Cu heavily overdoped BaFeCuAs2 with the order wave vector at (0.5 0.5 1). This anitiferromagnetic signal cannot come from the parent...

Recent observation of AFM transition at 1.3 K in Sr2YIrO6 with Ir in 5+ valence state has motivated research interests in the double perovskite Sr2TIrO6. Usually Ir5+ with a...

We propose to study the temperature dependence of the inelastic response of BaCoO3. This system gives the experimental evidence of a new partially disordered antiferromagnetic...

The solution of the Anderson lattice model (ALM) leads to two renormalized bands near EF with an energy gap due to hybridization between the 4f- and conduction electrons. The...

ACo2As2 (A=Ba, Sr, Ca) are end members of Co doped Ba-122 family. Understanding the magnetic behavior of these end members can help us to understand the magnetic properties of...

Magnetic frustration - the inability to mutually satisfy all magnetic interactions in a system - is the source of many interesting phenomena, including spin liquids and ices. In...

The tellurides, M3TeO6, were recently reported as multiferroic The materials show complex behaviour with a series of commensurate and incommensurate antiferromagnetic phases...

the correlation degree in 122 iron pnictides mainly depends on the electronoccupancy of each orbital and that by doping electrons the correlation decreases monotonically. This...