Bose-Einstein Condensation of Magnons in NiCl2-4SC(NH2)2
Armando Paduan-Filho
TL;DR
This paper reviews the experimental observation of Bose-Einstein condensation of magnons in the magnetic insulator NiCl2-4SC(NH2)2 under low temperature and magnetic field conditions, highlighting its significance in condensed matter physics.
Contribution
It presents a comprehensive review of BEC of magnons in NiCl2-4SC(NH2)2, emphasizing experimental findings and the role of magnetic fields in inducing the phase transition.
Findings
Bose-Einstein condensation of magnons observed in NiCl2-4SC(NH2)2
Magnetic field induces ordered magnetic phase at low temperatures
Experimental evidence supports magnon BEC in this compound
Abstract
A Bose-Einstein condensation (BEC) has been observed in magnetic insulators in the last decade. The bosons that condensed are magnons, associated with an ordered magnetic phase induced by a magnetic field. We review the experiments in the spin-gap compound NiCl2-4SC(NH2)2, in which the formation of BEC occurs by applying a magnetic field at low temperatures. This is a contribution to the celebration for the 50th anniversary of the Solid State and Low Temperature Laboratory of the University of S\~ao Paulo, where this compound was first magnetically characterized.
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