Superconducting and magnetic phase diagram of and at high pressure

DE Jackson, D VanGennep, W Bi, D Zhang, P Materne… - Physical Review B, 2018 - APS
The recently discovered (Rb, Cs) EuFe 4 As 4 compounds exhibit an unusual combination of
superconductivity (T c∼ 35 K) and ferromagnetism (T m∼ 15 K). We have performed a …

: A model molecular-field helical Heisenberg antiferromagnet

NS Sangeetha, E Cuervo-Reyes, A Pandey… - Physical Review B, 2016 - APS
The metallic compound EuCo 2 P 2 with the body-centered tetragonal ThCr 2 Si 2 structure
containing Eu spins-7/2 was previously shown from single-crystal neutron diffraction …

Antiferromagnetism in semiconducting and single crystals

NS Sangeetha, V Smetana, AV Mudring, DC Johnston - Physical Review B, 2018 - APS
Crystals of SrMn 2 Sb 2 and BaMn 2 Sb 2 were grown using Sn flux and characterized by
powder and single-crystal x-ray diffraction, respectively, and by single-crystal electrical …

Non-Fermi-liquid types of behavior associated with a magnetic quantum critical point in single crystals

NS Sangeetha, LL Wang, AV Smirnov, V Smetana… - Physical Review B, 2019 - APS
The compound SrCo 2 As 2 with the body-centered tetragonal ThCr 2 Si 2 structure is known
to remain paramagnetic down to a temperature T= 0.05 K, but inelastic neutron scattering …

Enhanced moments of Eu in single crystals of the metallic helical antiferromagnet

NS Sangeetha, VK Anand, E Cuervo-Reyes… - Physical Review B, 2018 - APS
The compound EuCo 2− y As 2 with the tetragonal ThCr 2 Si 2 structure is known to contain
Eu+ 2 ions with spin S= 7 2 that order below a temperature TN≈ 47 K into an …

Itinerant G-type antiferromagnetic order in

P Das, NS Sangeetha, GR Lindemann, TW Heitmann… - Physical Review B, 2017 - APS
Neutron-diffraction and magnetic susceptibility studies of polycrystalline SrCr 2 As 2 reveal
that this compound is an itinerant G-type antiferromagnet below the Néel temperature TN …

Suppression of magnetic order in with Fe substitution: Magnetization, neutron diffraction, and x-ray diffraction studies of

WT Jayasekara, A Pandey, A Kreyssig, NS Sangeetha… - Physical Review B, 2017 - APS
Magnetization, neutron diffraction, and high-energy x-ray diffraction results for Sn-flux grown
single-crystal samples of Ca (Co 1− x Fe x) y As 2, 0≤ x≤ 1, 1.86≤ y≤ 2, are presented …

Electronic and magnetic structures that hinder the superconducting state in the collapsed phase of

UF Kaneko, ISS de Oliveira, PF Gomes, KR Tasca… - Physical Review B, 2023 - APS
The lack of superconductivity in the family of materials AB 2 As 2 (A= Sr, Ba and B= Cr, Mn)
under doping or pressure is an intriguing issue, considering the resemblance of these …

Structural, electronic, and dynamical properties of the tetragonal and collapsed tetragonal phases of

A Ptok, M Sternik, KJ Kapcia, P Piekarz - Physical Review B, 2019 - APS
Compounds with a tetragonal ThCr 2 Si 2-type structure are characterized by the possibility
of the isostructural phase transition from the tetragonal phase to the collapsed tetragonal …

Collapsed tetragonal phase transition in

G Drachuck, A Sapkota, WT Jayasekara, K Kothapalli… - Physical Review B, 2017 - APS
The structural properties of LaRu 2 P 2 under external pressure have been studied up to 14
GPa, employing high-energy x-ray diffraction in a diamond-anvil pressure cell. At ambient …