The puzzle of high temperature superconductivity in layered iron pnictides and chalcogenides

DC Johnston - Advances in Physics, 2010 - Taylor & Francis
The response of the worldwide scientific community to the discovery in 2008 of
superconductivity at T c= 26 K in the Fe-based compound LaFeAsO1− x F x has been very …

Standard methods for heat capacity measurements on a quantum design physical property measurement system

PF Rosen, BF Woodfield - The Journal of Chemical Thermodynamics, 2020 - Elsevier
The commercial availability of the Physical Property Measurement System (PPMS) by
Quantum Design has significantly increased access to heat capacity measurements on a …

Superconductivity in Ru-substituted polycrystalline

S Sharma, A Bharathi, S Chandra, VR Reddy… - Physical Review B …, 2010 - APS
The occurrence of bulk superconductivity at∼ 22 K is reported in polycrystalline samples of
BaFe 2− x Ru x As 2 for nominal Ru content in the range of x= 0.75–1.125. A systematic …

Crystal structure and magnetic properties of the spin- frustrated two-leg ladder compounds

P Biswal, S Guchhait, S Ghosh, SN Sarangi, D Samal… - Physical Review B, 2023 - APS
We have successfully synthesized single crystals, solved the crystal structure, and studied
the magnetic properties of a new family of copper halides (C 4 H 14 N 2) Cu 2 X 6 (X= Cl …

Materials Chemistry of BaFe2As2: A Model Platform for Unconventional Superconductivity

D Mandrus, AS Sefat, MA McGuire… - Chemistry of …, 2010 - ACS Publications
BaFe2As2 is the parent compound of a family of unconventional superconductors with
critical temperatures approaching 40 K. BaFe2As2 is structurally simple, available as high …

New ternary superconducting compound LaRu2As2: Physical properties from density functional theory calculations

MA Hadi, MS Ali, SH Naqib, A Islam - Chinese Physics B, 2017 - iopscience.iop.org
In this paper, we perform the density functional theory (DFT)-based calculations by the first-
principles pseudopotential method to investigate the physical properties of the newly …

Evolution of transport properties of BaFeRuAs in a wide range of isovalent Ru substitution

MJ Eom, SW Na, C Hoch, RK Kremer, JS Kim - Physical Review B …, 2012 - APS
The effects of isovalent Ru substitution at the Fe sites of BaFe 2− x Ru x As 2 are
investigated by measuring resistivity (ρ) and Hall coefficient (RH) on high-quality single …

Synthesis, structure, and properties of tetragonal (, , and ) compounds containing alternating -type and FeAs-type layers

R Nath, VO Garlea, AI Goldman, DC Johnston - Physical Review B …, 2010 - APS
Polycrystalline samples of Sr 2 Mn 2 CuAs 2 O 2, Sr 2 Mn 3 As 2 O 2, and Sr 2 Zn 2 MnAs 2
O 2 were synthesized. Their temperature-and applied magnetic field-dependent structural …

Cause, Consequence, and Control of Ag Vacancies in BaAg2–xAs2

V Kyveryga, P Yox, G Viswanathan, A Sarkar… - Inorganic …, 2024 - ACS Publications
The impact of transition metal (Ag) deficiencies on the structural and transport properties of
ThCr2Si2-type arsenides are investigated. We experimentally confirm a partial occupancy of …

Physical properties of BaRu2X2 (X= P, As) superconducting compound sunder pressure effects: Ab initio study

M Radjai, A Bouhemadou - Physica C: Superconductivity and its …, 2023 - Elsevier
We report the results of a detailed ab initio investigation of the pressure effects up to 18 GPa
on the structural, elastic and thermodynamic properties of the superconducting compounds …