title: Entropy balance and evidence for local spin singlets in a Kagome-like magnet
abstract: We have measured the specific heat C(T) of the S = 3 / 2 Kagome-lattice-containing compound SrCr (9p)Ga (12-9p)O (19). We find little field dependence of the low-temperature C(T), consistent with a low-energy spectrum dominated by many-body singlet excitations. At high temperatures, we recover only approximately 50% of the total R ln4 entropy.
authors.affiliation: Bell Labs, Lucent Technologies, 600 Mountain Avenue, Murray Hill, New Jersey 07974, USA.
authors.initials: AP
authors.lastname: Ramirez
authors.initials: B
authors.lastname: Hessen
authors.initials: M
authors.lastname: Winklemann