title: Asymmetric quintuplet condensation in the frustrated S = 1 spin dimer compound Ba3Mn2O8.
abstract: Ba_{3}Mn_{2}O_{8} is a spin-dimer compound based on pairs of S = 1, 3d;{2}, Mn;{5+} ions arranged on a triangular lattice. Antiferromagnetic intradimer exchange leads to a singlet ground state in zero field, with excited triplet and quintuplet states at higher energy. High field thermodynamic measurements are used to establish the phase diagram, revealing a substantial asymmetry of the quintuplet condensate. This striking effect, all but absent for the triplet condensate, is due to a fundamental asymmetry in quantum fluctuations of the paramagnetic phases near the various critical fields.
authors: Geballe Laboratory for Advanced Materials and Department of Applied Physics, Stanford University, Stanford, California 94305, USA.
authors: E C
authors: EC
authors: Samulon
authors: Y
authors: Y
authors: Kohama
authors: R D
authors: RD
authors: McDonald
authors: M C
authors: MC
authors: Shapiro
authors: K A
authors: KA
authors: Al-Hassanieh
authors: C D
authors: CD
authors: Batista
authors: M
authors: M
authors: Jaime
authors: I R
authors: IR
authors: Fisher