Meta-magnetic transitions; Magnetization plateaus; Geometrically frustrated magnets
Hegde Nagabhushan G., Levatić Ivana, Magrez Arnaud, Rønnow Henrik M., Živković Ivica (2020), Magnetic dynamics across the in-field transition in Ca3Co2O6, in Physical Review B
, 102(10), 104418-104418.
Papi Hadi, Favre Virgile Yves, Ahmadvand Hossein, Alaei Mojtaba, Khondabi Mohammad, Sheptyakov Denis, Keller Lukas, Kameli Parviz, Živković Ivica, Rønnow Henrik M. (2019), Magnetic and structural properties of Ni-substituted magnetoelectric Co4Nb2O9, in Physical Review B
, 100(13), 134408-134408.
The search for universality has always been at the forefront of scientific endeavor where seemingly disparate phenomena are elegantly enveloped into a unique framework. We find this from Maxwell's equations, over the Standard model of particle physics, to the concept of second order phase transitions. In this project we seek to investigate universal aspects of meta-magnetic transitions in geometrically frustrated magnets which display magnetization plateaus. There are three main ingredients that characterize the systems that we plan to investigate:i) crystal-field environment of magnetic moments creates a uniaxial anisotropy (Ising spins)ii) strong ferromagnetic coupling along one direction (chains)iii) antiferromagnetic coupling between the chains that form triangular arrangement (frustration)Meta-magnetic transitions in these systems occur when one spin configuration is transformed into another one under the influence of magnetic field. Across different compounds the transitions look very similar yet the processes that govern the transformation are mainly unknown. We propose to investigate those processes using bulk and microscopic methods, in order to eliminate compound-specific features and try to find universal behavior behind them.