Magnetic Structure of the spin-1/2 antiferromagnetic XXZ chain PbCo2V2O8 in a transverse (1,1,0) magnetic field
The one-dimensional (1D) spin-1/2 antiferromagnetic with Heisenberg-Ising (XXZ) anisotropy, is a fascinating model system to explore fundamental physics such as quantum phase transitions and exotic ground states and excitations. Although no long-range magnetic order is expected in the pure 1D case, real materials which have interchain coupling develop long-range magnetic orders that reflect the nature of these ground states. The ACo2V2O8 compounds (A=Sr, Ba) are great physical realizations of the Heisenberg-Ising spin-1/2 chains. They show exotic physics in zero field as well as [1,0,0] and [0,0,1] applied fields with complex magnetic phases and excitations that can be used to test physics concepts. We have discovered a previously unreported phase for the [1,1,0] transverse field direction that is accessible in only the newly synthesized PbCo2V2O8 member of this family due to its lower energy scale. The aim of this experiment is to determine the magnetic structure of this field-induced phase using single crystal neutron diffraction.
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C. Aguilar-Maldonado; Bella Lake; Puzniak; SCHMALZL Karin and SCHMIDT Wolfgang F. (2023). Magnetic Structure of the spin-1/2 antiferromagnetic XXZ chain PbCo2V2O8 in a transverse (1,1,0) magnetic field. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.CRG-2998
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