Effect of antiferromagnetic spin correlations on lattice distortion and charge ordering in Pr${}_{0.5}$Ca${}_{1.5}$MnO${}_4$

Abstract

We use neutron scattering to study the lattice and magnetic structure of the layered half-doped manganite Pr${}_{0.5}$Ca${}_{1.5}$MnO${}_4$. On cooling from high temperature, the system first becomes charge- and orbital- ordered (CO/OO) near $T_{CO}=300$ K and then develops checkerboard-like antiferromagnetic (AF) order below $T_N=130$ K. At temperatures above $T_N$ but below $T_{CO}$ ($T_N<T<T_{CO}$), the appearance of short-range AF spin correlations suppresses the CO/OO induced orthorhombic strain, contrasting with other half-doped manganites, where AF order has no observable effect on the lattice distortion. These results suggest that a strong spin-lattice coupling and the competition between AF exchange and CO/OO ordering ultimately determines the low-temperature properties of the system.

7 pages, 5 figures

References in corpus (9)

• Stripe order, depinning, and fluctuations in La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$ and La${}_{1.875}$Ba${}_{0.075}$Sr${}_{0.050}$CuO${}_4$
• Charge and orbital order in half-doped manganites
• Ferromagnetic, A-type, and Charge-Ordered CE-type States in Doped Manganites using Jahn-Teller Phonons
• Charge Ordering and Phase Competition in the Layered Perovskite Lasr2mn2o7
• Structural and magnetic properties of the single-layer manganese oxide La{1-x}Sr{1+x}MnO4
• Origin of the Charge-Orbital Stripe Structure in La_(1-x)Ca_(x)MnO_(3) (x=1/2, 2/3)
• Evolution of spin-wave excitations in ferromagnetic metallic manganites
• Spin-wave dispersion in orbitally ordered La(0.5)Sr(1.5)MnO(4)
• Electronically smectic-like phase in a nearly half-doped manganite

Cited by in corpus (5)

• The nanoscale phase separation in hole-doped manganites
• Temperature-dependent and anisotropic optical response of layered Pr${}_{0.5}$Ca${}_{1.5}$MnO${}_4$ probed by spectroscopic ellipsometry
• Electronic self-organization in the single-layer manganite $\mathrm{P}{\mathrm{r}}_{1-x}\mathrm{C}{\mathrm{a}}_{1+x}\mathrm{Mn}{\mathrm{O}}_4$
• Correlations and dynamics of spins in an XY-like spin-glass (Ni0.4Mn0.6)TiO3 single crystal system
• A versatile setup for symmetry-resolved ultrafast dynamics of quantum materials