64 citations · 505 across the 19 of their papers we have counts for
19 papers
Antiferromagnetism and the emergence of frustration in saw-tooth lattice chalcogenide olivines MnSiSSe ( = 0 $\textendash$ 4)
H. Nhalil, R. Baral, B. O. Khamala +9
The magnetism in the saw-tooth lattice of Mn in the olivine chalcogenides, MnSiSSe ( = 1$\textendash$4) is studied in detail by analyzing their magnetization, sp…
Growth and Characterization of Ce- Substituted Nd2Fe14B Single Crystals
M. A. Susner, B. S. Conner, B. I. Saparov +8
Single crystals of (Nd1-xCex)2Fe14B are grown out of Fe-(Nd,Ce) flux. Chemical and structural analysis of the crystals indicates that (Nd1-xCex)2Fe14B forms a solid solution until…
Pressure-Induced Structural Phase Transition in CeNi: X-ray and Neutron Scattering Studies and First-Principles Calculations
A. Mirmelstein, A. Podlesnyak, Antnio M. dos Santos +7
The pressure-induced structural phase transition in the intermediate-valence compound CeNi has been investigated by X-ray and neutron powder diffraction techniques. For the first t…
Tetragonal and collapsed-tetragonal phases of CaFe2As2 -- a view from angle-resolved photoemission and dynamical mean field theory
Ambroise van Roekeghem, Pierre Richard, Xun Shi +8
We present a study of the tetragonal to collapsed-tetragonal transition of CaFe2As2 using angle-resolved photoemission experiments and dynamical mean field theory-based electronic…
Direct spectroscopic evidence for completely filled Cu shell in BaCuAs and -BaCuSb
S. F. Wu, P. Richard, A. van Roekeghem +9
We use angle-resolved photoemission spectroscopy to extract the band dispersion and the Fermi surface of BaCuAs and -BaCuSb. While the Cu bands in both mate…
Magnetic and structural transitions in LaNaFeAs single crystals
J. -Q. Yan, S. Nandi, B. Saparov +10
LaNaFeAs single crystals have been grown out of an NaAs flux in an alumina crucible and characterized by measuring magnetic susceptibility, electrical resis…
Robust antiferromagnetism preventing superconductivity in pressurized Ba0.61K0.39Mn2Bi2
Dachun Gu, Xia Dai, Congcong Le +16
Here, we report that K-doped BaMn2Bi2 shows no experimental evidence of superconductivity down to 1.5 K under pressures up to 35.6 GPa, however, a tetragonal to an orthorhombic pha…
Fermi-Surface Reconstruction and Complex Phase Equilibria in CaFeAs
K. Gofryk, B. Saparov, T. Durakiewicz +5
Fermi-surface topology governs the relationship between magnetism and superconductivity in iron-based materials. Using low-temperature transport, angle-resolved photoemission, and…
Cu substitution effects on the local magnetic properties of Ba(Fe_[1-x]Cu_[x])2As2: a site-selective 75-As and 63-Cu NMR study
H. Takeda, T. Imai, M. Tachibana +4
We take advantage of the site-selective nature of the As and Cu NMR techniques to probe the Cu substitution effects on the local magnetic properties of the FeAs plane…
Complex structures of different CaFeAs samples
Bayrammurad Saparov, Claudia Cantoni, Minghu Pan +6
The interplay between magnetism and crystal structures in three CaFeAs samples is studied. For the nonmagnetic quenched crystals, different crystalline domains with var…
Local inhomogeneity and filamentary superconductivity in Pr-doped CaFeAs
Krzysztof Gofryk, Minghu Pan, Claudia Cantoni +3
We use multi-scale techniques to determine the extent of local inhomogeneity and superconductivity in CaPrFeAs single crystal. The inhomogeneity is ma…
Magnetic structure and spin excitations in BaMn2Bi2
S. Calder, B. Saparov, H. B. Cao +4
We present a single crystal neutron scattering study of BaMn2Bi2, a recently synthesized material with the same ThCr2Si2-type structure found in several Fe-based unconventional sup…
Absence of structural transition in TM0.5IrTe2 (TM=Mn, Fe, Co, Ni)
J. -Q. Yan, B. Saparov, A. S. Sefat +5
TM-doped IrTe2(TM=Mn, Fe, Co, Ni) compounds were synthesized by solid state reaction. Single crystal x-ray diffraction experiments indicate that part of the doped TM ions (TM=Fe, C…
Crystal, magnetic, and electronic structures, and properties of new BaMnPnF (Pn = As, Sb, Bi)
Bayrammurad Saparov, David J. Singh, V. Ovidiu Garlea +1
New fluoropnictides BaMnPnF with Pn = As, Sb, Bi, are synthesized by stoichiometric reaction of elements with BaF\_2. The compounds crystallize in the tetragonal P4/nmm (No. 129, Z…
Crystals, magnetic and electronic properties of a new ThCr2Si2-type BaMn2Bi2 and K-doped compositions
Bayrammurad Saparov, Athena S. Sefat
This is a report on the new 122 ternary transition-metal pnictide of BaMn2Bi2, which is crystallized from bismuth flux. BaMn2Bi2 adopts ThCr2Si2-type structure (I4/mmm) with a = 4.…
Temperature-composition Phase Diagrams for Ba1-xSrxFe2As2 and Ba0.5Sr0.5(Fe1-yCoy)2As2
Jonathan E. Mitchell, Bayrammurad Saparov, Wenzhi Lin +6
Single crystals of mixed alkaline earth metal iron arsenide materials of Ba1-xSrxFe2As2 and Ba0.5Sr0.5(Fe1-yCoy)2As2 are synthesized via the self-flux method. Ba1-xSrxFe2As2 displa…
Properties of Binary Transition-Metal Arsenides (TAs)
B. Saparov, J. E. Mitchell, A. S. Sefat
We present thermodynamic and transport properties of transition-metal (T) arsenides, TAs with T = Sc to Ni (3d), Zr, Nb, Ru (4d), Hf and Ta (5d). Characterization of these binaries…
Effect of Molybdenum 4d Hole Substitution in BaFe2As2
Athena S. Sefat, Karol Marty, Andrew D. Christianson +5
We investigate the thermodynamic and transport properties of molybdenum-doped BaFe2As2 (122) crystals, the first report of hole doping using a 4d element. The chemical substitution…
Spin Glass and Semiconducting Behavior in 1D BaFe2-δSe3 Crystals
Bayrammurad Saparov, Stuart Calder, Balazs Sipos +6
We investigate the physical properties and electronic structure of BaFe2-δSe3 crystals, which were grown out of tellurium flux. The crystal structure of the compound, an iron-defic…