Magnetic decoupling in the low dimensional spin-1/2 antiferromagnet SeCuO3

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• Luc Testa, EPFL
• Friday 06 March 2020, 10:00-11:00
• Physics East 217.

If you have a question about this talk, please contact Mingee Chung.

SeCuO3 is a low-dimensional spin-1/2 antiferromagnet that has been extensively studied in the past few years due to the potential emergence of collective states. It has been proposed that the system orders at low-temperature, forming clusters of tetramers. In this presentation, I propose another model motivated by inelastic neutron scattering measurements. The magnetic lattice of this compound is made of two decoupled subsystems. The first one is composed of independent, strongly interacting Cu1 dimers while the second one is formed by interacting Cu2 chains. In this model, the Cu1 dimers are used as polarised orbitals, providing extra paths for the Cu2-Cu2 interactions. Based on the spin wave approximation, the exact values of the interaction strength have been computed leading to a remarkable agreement between numerical calculations and measurements.

This talk is part of the Condensed Matter Physics Seminars series.

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• Bham Talks
• Cond. Mat. seminar
• Condensed Matter Physics Seminars
• Physics East 217
• What's on in Physics?

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