Spin-valve effect and magnetoresistivity in single crystalline Ca3Ru2O7

Abstract

The laminar perovskite Ca3Ru2O7 naturally forms ferromagnetic double-layers of alternating moment directions, as in the spin-valve superlattices. The mechanism of huge magnetoresistive effect in the material has been controversial due to a lack of clear understanding of various magnetic phases and phase-transitions. In this neutron diffraction study in a magnetic field, we identify four different magnetic phases in Ca3Ru2O7 and determine all first-order and second-order phase transitions between them. The spin-valve mechanism then readily explains the dominant magnetoresistive effect in Ca3Ru2O7.

4 pages, 5 figures

References in corpus (3)

• An ordered stack of spin valves in a layered magnetoresistive perovskite
• Colossal Magnetoresistance by Avoiding a Ferromagnetic State in the Mott System Ca3Ru2O7
• Electronic Structure and Bulk Spin Valve Behavior in Ca${}_3$Ru${}_2$O${}_7$

Cited by in corpus (28)

• Nonlinear anomalous Hall effect for Néel vector detection
• Magnetoelectric multipoles in metals
• Metamagnetic texture in a polar antiferromagnet
• Electronically driven spin-reorientation transition of the correlated polar metal Ca${}_3$Ru${}_2$O${}_7$
• Neutron scattering investigation of the magnetic order in single crystalline BaFe2As2
• Colossal magnetoresistance in a Mott insulator via magnetic field-driven insulator-metal transition
• Unusual heavy-mass nearly ferromagnetic state with a surprisingly large Wilson ratio in the double layered ruthenates (Sr${}_{1-x}$Ca${}_x$)${}_3$Ru${}_2$O${}_7$
• Electronic reconstruction forming a $C_2$-symmetric Dirac semimetal in Ca${}_3$Ru${}_2$O${}_7$
• Existence of electron and hole pockets and partial gap opening in the correlated semimetal Ca3Ru2O7
• Complex electronic states in double layered ruthenates (Sr1-xCax)3Ru2O7
• Spontaneous cycloidal order mediating a spin-reorientation transition in a polar metal
• Spin and charge excitations in the correlated multiband metal Ca3Ru2O7
• Resonant Inelastic X-ray Scattering Study of Ca${}_3$Ru${}_2$O${}_7$
• Tipping the magnetic instability in paramagnetic Sr${}_3$Ru${}_2$O${}_7$ by Fe impurities
• Magnetic Multipoles in a Ruthenate Ca3Ru2O7
• Field-induced magnetic phase transitions and memory effect in bilayer ruthenate Ca${}_3$Ru${}_2$O${}_7$ with Fe substitution
• The effect of disorder on quantum phase transition in the double layered ruthenates (Sr1-xCax)3Ru2O7
• Nonlinear Transport Signatures of Hidden Symmetry Breaking in a Weyl Altermagnet
• The power of flexible lattice in Ca3Ru2O7: Exquisite control of the electrical transport via anisotropic magnetostriction
• Photoinduced phase switching at a Mott insulator-to-metal transition
• Role of orbital off-diagonal spin and charge condensates in a three orbital model for $\mathrm{C}{\mathrm{a}}_2\mathrm{Ru}{\mathrm{O}}_4$ -- Coulomb renormalized spin-orbit coupling, orbital moment, and tunable magnetic order
• Adsorption of CO on the Ca3Ru2O7(001) surface
• Structural and metal-insulator transitions in ionic liquid-gated Ca3Ru2O7 surface
• μSR investigation of the Fe-doped Ca${}_3$Ru${}_2$O${}_7$ polar metal
• Evidence for bootstrap percolation dynamics in a photo-induced phase transition
• Probing Hidden Symmetry and Altermagnetism with Sub-Picometer Sensitivity via Nonlinear Transport
• A simplified method characterizing magnetic ordering modulated photo-thermoelectric response in noncentrosymmetric semimetal Ca3Ru2O7
• Unrestricted Hartree-Fock Analysis of Sr${}_{3-x}$Ca${}_x$Ru${}_2$O${}_7$