Bose-Einstein Condensation of Magnons in NiCl2-4SC(NH2)2

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 São Paulo, where this compound was first magnetically characterized.

arXiv comment13 pages, 11 figures; Braz. J. Phys. 42 (2012)

References in corpus (27)

• Many-Body Physics with Ultracold Gases
• Bose-Einstein Condensation in Magnetic Insulators
• Realization of Bose-Einstein condensation of dilute magnons in TlCuCl${}_3$
• Theory of the Weakly Interacting Bose Gas
• Coupled Ladders in a Magnetic Field
• Dimensional reduction at a quantum critical point
• Bose-Einstein Condensation of S = 1 Ni spin degrees of freedom in NiCl2-4SC(NH2)2
• Magnon Dispersion in the Field-Induced Magnetically Ordered Phase of TlCuCl3
• Magnetic Excitations in the Spin-1 Anisotropic Heisenberg Antiferromagnetic Chain System NiCl${}_2$-4SC(NH${}_2$)${}_2$
• Bose-Einstein transition in a dilute interacting gas
• Magnetic-Field Induced Bose-Einstein Condensation of Magnons and Critical Behavior in Interacting Spin Dimer System TlCuCl${}_3$
• Bose-Einstein Condensation of Magnons in TlCuCl3: Phase diagram and specific heat from a self-consistent Hartee-Fock calculation with a realistic dispersion relation
• A direct measurement of the Bose-Einstein Condensation universality class in NiCl${}_2$-4SC(NH${}_2$)${}_2$ at ultra-low temperatures
• Quantum fluctuations and strong mass renormalization in NiCl2-4SC(NH2)2
• Mott glass in site-diluted S=1 antiferromagnets with single-ion anisotropy
• Consequences of spin-orbit coupling for the Bose-Einstein condensation of magnons
• Character of magnetic excitations in a quasi-one-dimensional antiferromagnet near the quantum critical points: Impact on magneto-acoustic properties
• Field-driven phase transitions in a quasi-two-dimensional quantum antiferromagnet
• Critical properties and Bose Einstein Condensation in dimer spin systems
• Spin Dynamics of $NiC{l}_2-4SC(N{H}_2{)}_2$ in the Field-Induced Ordered Phase
• The field-induced magnetic ordering transition in TlCuCl${}_3$
• Novel approach to description of quantum magnets with large singe-ion easy-plane anisotropy
• Bose-Einstein condensation in antiferromagnets close to the saturation field
• Numerical study of magnetic field induced ordering in BaCuSi${}_2$O${}_6$ and related systems
• Magnetic excitations in the spin-1 anisotropic antiferromagnet $NiC{l}_2-4SC(N{H}_2{)}_2$
• Critical Properties of Condensation of Field-Induced Triplet Quasiparticles
• Goldstone Theorem, Hugenholtz-Pines Theorem and Ward-Takahashi Relation in Finite Volume Bose-Einstein Condensed Gases

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