Magnetic field-induced phase transitions in a weakly coupled s = 1/2 quantum spin dimer system Ba${}_3$Cr${}_2$O${}_8$

Abstract

By using bulk magnetization, electron spin resonance (ESR), heat capacity, and neutron scattering techniques, we characterize the thermodynamic and quantum phase diagrams of Ba${}_3$Cr${}_2$O${}_8$. Our ESR measurements indicate that the low field paramagnetic ground state is a mixed state of the singlet and the S${}_z$ = 0 triplet for $H\perp c$. This suggests the presence of an intra-dimer Dzyaloshinsky-Moriya (DM) interaction with a DM vector perpendicular to the c-axis.

References in corpus (8)

• Bose-Einstein Condensation in Magnetic Insulators
• Quantum magnetism and criticality
• Dimensional reduction at a quantum critical point
• Bose-Einstein Condensation of Magnons in Cs2CuCl4
• Bose-Einstein Condensation of Triplons in Ba3Cr2O8
• Ordered magnetic phases of the frustrated spin-dimer compound Ba3Mn2O8
• Weakly coupled $s=1/2$ quantum spin singlets in Ba${}_3$Cr${}_2$O${}_8$
• Field Induced Staggered Magnetization and Magnetic Ordering in $C{u}_2(C_5{H}_{12}{N}_2{)}_{2}C{l}_4$

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• Crystal growth, structure and magnetic properties of Ca10Cr7O28
• High-field spectroscopy of singlet-triplet transitions in the spin-dimer systems Sr3Cr2O8 and Ba3Cr2O8
• Magnon Supersolid and Anomalous Hysteresis in Spin Dimers on a Triangular Lattice
• On Josephson effects in insulating spin systems
• Theory of Magnetic Field-Induced Bose-Einstein Condensation of Triplons in Ba3Cr2O8
• Gr{ü}neisen parameter of quantum magnets with spin gap
• On two phases inside the Bose condensation dome of Yb${}_2$Si${}_2$O${}_7$
• Magnetic Phase Diagram of Alternating Chain Compound Pb2V3O9
• Bose-Einstein condensation in honeycomb dimer magnets and $\mathrm{Y}{\mathrm{b}}_2\mathrm{S}{\mathrm{i}}_2{\mathrm{O}}_7$
• Exciton condensation in bilayer spin-orbit insulator
• Magnetic field induced quantum phase transition of the $S=1/2$ antiferromagnet $K_{2}NaCr{O}_8$
• Structural and magnetic properties in the quantum S=1/2 dimer systems Ba3(Cr1-xVx)2O8 with site disorder
• Theory of field-induced quantum phase transition in spin dimer system Ba${}_3$Cr${}_2$O${}_8$
• Tuning the critical magnetic field of the triplon Bose-Einstein condensation in Ba${}_{3-x}$Sr${}_x$Cr${}_2$O${}_8$
• Self-consistent T-matrix approach to gap renormalization in quantum magnets with bond disorder
• Singlet-triplet Crossover in the Two-dimensional Dimer Spin System YbAl3C3
• Anomalous magnetic exchange in a dimerized quantum-magnet composed of unlike spin species
• Single crystal growth and study of the magnetic properties of the mixed spin-dimer system Ba${}_{3-x}$Sr${}_x$Cr${}_2$O${}_8$
• Neutron diffraction of field-induced magnon condensation in the spin-dimerized antiferromagnet Sr${}_3$Cr${}_2$O${}_8$
• Tuning the orbital-lattice fluctuations in the mixed spin-dimer system Ba${}_{3-x}$Sr${}_x$Cr${}_2$O${}_8$