Two types of adjacent dimer layers in the low temperature phase of BaCuSi2O6

Abstract

The low-temperature crystal structure of BaCuSi2O6 has been investigated with high-resolution synchrotron x-ray and neutron powder diffraction techniques and has been found to be on average (ignoring the incommensurate modulation) orthorhombic, with the most probable space group Ibam. The Cu-Cu dimers in this material are forming two types of layers with distinctly different interatomic distances. Subtle changes also modify the partially frustrated interlayer Cu-Cu exchange paths. The present results corroborate the interpretation of low-temperature nuclear magnetic resonance and inelastic neutron scattering data in terms of distinct dimer layers.

References in corpus (16)

• Bose-Einstein Condensation in Magnetic Insulators
• Coupled Ladders in a Magnetic Field
• Magnetic Superstructure in the Two-Dimensional Quantum Antiferromagnet SrCu2(BO3)2
• Magnetic Field-Induced Condensation of Triplons in Han Purple Pigment BaCuSi${}_2$O${}_6$
• Dimensional reduction at a quantum critical point
• Temperature-dependent spin gap and singlet ground state in BaCuSi2O6
• Characteristic BEC scaling close to Quantum Critical Point in BaCuSi2O6
• Multiple Magnon Modes and Consequences for the Bose-Einstein Condensed Phase in BaCuSi2O6
• Geometric Frustration and Dimensional Reduction at a Quantum Critical Point
• Emergent Symmetry and Dimensional Reduction at a Quantum Critical Point
• Theory of the field-induced BEC in the frustrated spin-1/2 dimer compound BaCuSi2O6
• NMR evidence for a strong modulation of the Bose-Einstein Condensate in BaCuSi${}_2$O${}_6$
• Low temperature structural phase transition and incommensurate lattice modulation in the spin gap compound BaCuSi2O6
• Spin-Triplet Excitons in the $S=1/2$ Gapped Antiferromagnet BaCuSi${}_2$O${}_6$: Electron Paramagnetic Resonance Studies
• Quantum phase transitions and dimensional reduction in antiferromagnets with inter-layer frustration
• Reduced dimensionality in layered quantum dimer magnets: Frustration vs. inhomogeneous condensates

Cited by in corpus (9)

• Magnetic frustration in BaCuSi2O6 released
• Two energy scales of spin dimers in clinoclase Cu3(AsO4)(OH)3
• Revealing three-dimensional quantum criticality by Sr-substitution in Han Purple
• Spatially Resolved Magnetization in the Bose-Einstein Condensed State of BaCuSi2O6: Evidence for Imperfect Frustration
• Multiple Magnetic Bilayers and Unconventional Criticality without Frustration in BaCuSi${}_2$O${}_6$
• Stabilization of the tetragonal structure in (Ba${}_{1-x}$Sr${}_x$)CuSi${}_2$O${}_6$
• Crystal growth with oxygen partial pressure of the $BaCuS{i}_2{O}_6$ and $B{a}_{1-x}S{r}_{x}CuS{i}_2{O}_6$ spin dimer compounds
• Floating Zone Growth of Sr Substituted Han Purple: Ba${}_{0.9}$Sr${}_{0.1}$CuSi${}_2$O${}_6$
• Investigating field-induced magnetic order in Han Purple by neutron scattering up to 25.9 T