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MA: Fachverband Magnetismus
MA 59: Posters Magnetism III
MA 59.41: Poster
Freitag, 20. März 2020, 09:00–12:00, P2/EG
Combined theoretical and experimental investigation of the novel S=1 spin dimer system K2Ni(MoO4)2 — •Benjamin Lenz1,2, Swarup K. Panda3,2, Silke Biermann2,4, Bommisetti Koteswara Rao5,6,7, Rao Kumar8, Panchanana Khuntia9, Avinash V. Mahajan8, Michael Baenitz9, Kee Hoon Kim10, and Fang-Cheng Chou7 — 1IMPMC, Sorbonne Université, Paris, France — 2CPHT, Ecole Polytechnique, Palaiseau, France — 3Bennett University, Greater Noida, Uttar Pradesh, India — 4Collège de France, Paris, France — 5IIT Tirupati, Tirupati, India — 6University of Hyderabad, Hyderabad, India — 7National Taiwan University, Taipei, Taiwan — 8IIT Bombay, Mumbai, India — 9MPI-CPS, Dresden, Germany — 10Seoul National University, Seoul, South Korea
Spin dimer systems have raised a lot of interest in recent years due to the possibility of studying the Bose-Einstein condensation of their magnetic excitations.
Here, we investigate the novel quantum magnet K2Ni(MoO4)2, which has been synthesized recently, by means of different state-of-the-art techniques.
Measurements and first principles calculations both establish a S=1 spin dimer ground state of the compound and allow to study its magnetic and thermodynamic properties.
Using mean-field theory and quantum Monte Carlo simulations we find the magnetization curve, magnetic susceptibility and specific heat in good agreement with recent experiments.
Our results render this novel quantum magnet a promising candidate for the condensation of magnons under an applied magnetic field.