Magnons as a Bose-Einstein Condensate in Nanocrystalline Gadolinium

Journal Article · Fri Jun 17 00:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.106.247204· OSTI ID:21567469

Kaul, S N; Mathew, S P ^[1]

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1. School of Physics, University of Hyderabad, Central University P.O., Hyderabad-500 046 (India)

The recent observation [S. P. Mathew et al., J. Phys. Conf. Ser. 200, 072047 (2010)] of the anomalous softening of spin-wave modes at low temperatures in nanocrystalline gadolinium is interpreted as a Bose-Einstein condensation (BEC) of magnons. A self-consistent calculation, based on the BEC picture, is shown to closely reproduce the observed temperature variations of magnetization and specific heat at constant magnetic fields.

• OSTI ID: 21567469
• Journal Information: Physical Review Letters, Vol. 106, Issue 24; Other Information: DOI: 10.1103/PhysRevLett.106.247204; (c) 2011 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
CRYSTALS
GADOLINIUM
MAGNETIC FIELDS
MAGNETIZATION
MAGNONS
NANOSTRUCTURES
SPECIFIC HEAT
SPIN WAVES
TEMPERATURE RANGE 0065-0273 K
ELEMENTS
METALS
PHYSICAL PROPERTIES
QUASI PARTICLES
RARE EARTHS
TEMPERATURE RANGE
THERMODYNAMIC PROPERTIES