Tuning the critical magnetic field of the triplon Bose-Einstein condensation in Ba${}_{3-x}$Sr${}_x$Cr${}_2$O${}_8$

Abstract

The structure and magnetic interactions of the triplon Bose-Einstein condensation candidates Ba${}_3$Cr${}_2$O${}_8$ and Sr${}_3$Cr${}_2$O${}_8$ have been studied thoroughly in the literature, but little is known about a possible triplon condensation in the corresponding solid solution Ba${}_{3-x}$Sr${}_x$Cr${}_2$O${}_8$. We have prepared various members of this solid solution and systematically examined their magnetic properties in high magnetic fields up to 60 T and at low temperatures down to 340 mK, by means of pulsed field and cantilever magnetometry. From these experiments for $x\in \{3,2.9,2.8,2.7,2.6,2.5\}$, we find that the critical fields of Ba${}_{3-x}$Sr${}_x$Cr${}_2$O${}_8$ decrease monotonically as a function of the Sr content $x$. This change is in good agreement with the earlier reported variation of the magnetic interactions in these compounds.

References in corpus (7)

• Bose-Einstein Condensation in Magnetic Insulators
• Bose-Einstein Condensation of Triplons in Ba3Cr2O8
• Weakly coupled $s=1/2$ quantum spin singlets in Ba${}_3$Cr${}_2$O${}_8$
• Dynamics of a bond-disordered $S=1$ quantum magnet near $z=1$ criticality
• Critical exponents and intrinsic broadening of the field-induced transition in NiCl${}_2$$\cdot$4SC(NH${}_2$)${}_2$
• The fraction of Bose-Einstein condensed triplons in TlCuCl3 from magnetization M(T,H)-data
• Influence of disorder on the structural phase transition and magnetic interactions in Ba${}_{3-x}$Sr${}_x$Cr${}_2$O${}_8$

Cited by in corpus (3)

• Critical behavior of Tan's contact for bosonic systems with a fixed chemical potential
• Single crystal growth and study of the magnetic properties of the mixed spin-dimer system Ba${}_{3-x}$Sr${}_x$Cr${}_2$O${}_8$
• Tuning the orbital-lattice fluctuations in the mixed spin-dimer system Ba${}_{3-x}$Sr${}_x$Cr${}_2$O${}_8$