R. H. Colman

collaborators

4 papers

cond-mat.str-el2026

Ultralow-Field Triplon Condensation in a Spin-Ladder Magnet

Ankit Labh, Ross H. Colman, Jakub Šebesta +12

We realise the first ultralow-field Bose-Einstein condensation of triplons in a spin-ladder magnet, uncovering a quantum critical point at only $μ_{0} H_{c 1} = 0.17$ T in Henmilite ($\…

cond-mat.str-el2026

Spin-orbit-entangled $J_{eff} = \frac{1}{2}$ magnetism and unconventional spin freezing in the bond-disordered pyrochlore antiferromagnet NaCdCo $_{2}$ F $_{7}$

Andrej Kancko, Hironori Sakai, Javier Herrero-MartÃn +5

Bond disorder in frustrated pyrochlore antiferromagnets can give rise to fundamentally different quantum ground states depending on the nature of the local magnetic moments. Here,…

cond-mat.str-el2026

Random singlet physics in the $S = \frac{1}{2}$ pyrochlore antiferromagnet NaCdCu $_{2}$ F $_{7}$

Andrej Kancko, Hironori Sakai, Cinthia Antunes CorrÃªa +7

We report a random singlet ground state in the $S = \frac{1}{2}$ Heisenberg pyrochlore antiferromagnet NaCdCu $_{2}$ F $_{7}$ . Cationic Na $^{+}$ /Cd $^{2 +}$ disorder on the pyrochlore $A$ site…

cond-mat.str-el2025

Glassy disordered ground states in the frustrated pyrochlore and fluorite antiferromagnets NaCd $M_{2}$ F $_{7}$ ( $M$ = Ni $^{2 +}$ , Mn $^{2 +}$ )

Andrej Kancko, Cinthia Antunes CorrÃªa, Ross Harvey Colman

We report the crystal structures, magnetic and thermodynamic properties of two magnetically frustrated $A$ ' $A$ " $M_{2}$ F $_{7}$ -type antiferromagnets, NaCdNi $_{2}$ F $_{7}$ and NaCdMn $_{2}$ F $_{7}$ …

Ultralow-Field Triplon Condensation in a Spin-Ladder Magnet

Spin-orbit-entangled Jeff​=21​ magnetism and unconventional spin freezing in the bond-disordered pyrochlore antiferromagnet NaCdCo2​F7​

Random singlet physics in the S=21​ pyrochlore antiferromagnet NaCdCu2​F7​

Glassy disordered ground states in the frustrated pyrochlore and fluorite antiferromagnets NaCdM2​F7​ (M = Ni2+, Mn2+)

Spin-orbit-entangled $J_{eff} = \frac{1}{2}$ magnetism and unconventional spin freezing in the bond-disordered pyrochlore antiferromagnet NaCdCo $_{2}$ F $_{7}$

Random singlet physics in the $S = \frac{1}{2}$ pyrochlore antiferromagnet NaCdCu $_{2}$ F $_{7}$

Glassy disordered ground states in the frustrated pyrochlore and fluorite antiferromagnets NaCd $M_{2}$ F $_{7}$ ( $M$ = Ni $^{2 +}$ , Mn $^{2 +}$ )