[HTML][HTML] Quantum-critical scale invariance in a transition metal alloy

Y Nakajima, T Metz, C Eckberg, K Kirshenbaum… - Communications …, 2020 - nature.com
Quantum-mechanical fluctuations between competing phases induce exotic collective
excitations that exhibit anomalous behavior in transport and thermodynamic properties, and …

Competing magnetic fluctuations in iron pnictide superconductors: role of ferromagnetic spin correlations revealed by NMR

P Wiecki, B Roy, DC Johnston, SL Bud'ko… - Physical Review Letters, 2015 - APS
In the iron pnictide superconductors, theoretical calculations have consistently shown
enhancements of the static magnetic susceptibility at both the stripe-type antiferromagnetic …

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 …

Inhomogeneous magnetic ordered state and evolution of magnetic fluctuations in revealed by NMR

N Furukawa, QP Ding, J Schmidt, SL Bud'ko… - Physical Review B, 2024 - APS
SrCo 2 P 2 with a tetragonal structure is known to be a Stoner-enhanced Pauli paramagnetic
metal being nearly ferromagnetic. Recently J. Schmidt et al.[Phys. Rev. B 108, 174415 …

Coexistence of Ferromagnetic and Stripe Antiferromagnetic Spin Fluctuations in

Y Li, Z Yin, Z Liu, W Wang, Z Xu, Y Song, L Tian… - Physical review …, 2019 - APS
We use inelastic neutron scattering to study energy and wave vector dependence of spin
fluctuations in SrCo 2 As 2, derived from SrFe 2-x Co x As 2 iron pnictide superconductors …

Multiple ferromagnetic transitions and structural distortion in the van der Waals ferromagnet at ambient and finite pressures

E Gati, Y Inagaki, T Kong, RJ Cava, Y Furukawa… - Physical Review B, 2019 - APS
We present a combined study of zero-field V 51 and I 127 NMR at ambient pressure and
specific heat and magnetization measurements under pressure up to 2.08 GPa on bulk …

Strong magnetic correlations to 900 K in single crystals of the trigonal antiferromagnetic insulators and

NS Sangeetha, A Pandey, ZA Benson, DC Johnston - Physical Review B, 2016 - APS
Crystallographic, electronic transport, thermal, and magnetic properties are reported for
SrMn 2 As 2 and CaMn 2 As 2 single crystals grown using Sn flux. Rietveld refinements of …

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 …

Competing magnetic phases and itinerant magnetic frustration in

B Li, BG Ueland, WT Jayasekara, DL Abernathy… - Physical Review B, 2019 - APS
Whereas magnetic frustration is typically associated with local-moment magnets in special
geometric arrangements, here we show that SrCo 2 As 2 is a candidate for frustrated …

NMR determination of an incommensurate helical antiferromagnetic structure in

QP Ding, N Higa, NS Sangeetha, DC Johnston… - Physical Review B, 2017 - APS
We report Eu 153, As 75, and Co 59 nuclear magnetic resonance (NMR) results on EuCo 2
As 2 single crystal. Observations of Eu 153 and As 75 NMR spectra in zero magnetic field at …