Anisotropic thermal conduction in the antiferromagnetic spin-ordered phase of solid [sup 3]He

Journal Article · Fri Apr 01 00:00:00 EST 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.49.8790· OSTI ID:5090537

Feng, Y P; Schiffer, P; Osheroff, D D ^[1]

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1. Department of Physics, Stanford University, Stanford, California 94305 (United States)

The thermal conductivity [kappa] of single crystals of solid [sup 3]He was measured using NMR techniques in the low-field spin-ordered phase where magnons are the dominant heat carriers. In the umklapp scattering regime, the thermal conduction in monodomain samples is found to be anisotropic, consistent with [kappa] varying by a factor of 18 between the two symmetry directions of the ordered state, in good agreement with theoretical expectations. In the defect scattering regime, evidence is found in one crystal for a Poiseuille flow of magnons, suggesting that magnon second sound may be observable in this system.

• OSTI ID: 5090537
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 49:13; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HELIUM 3
THERMAL CONDUCTIVITY
ANISOTROPY
DEFECTS
MAGNONS
MONOCRYSTALS
NMR SPECTRA
SECOND SOUND
SPIN ORIENTATION
UMKLAPP PROCESSES
BASIC INTERACTIONS
CRYSTALS
ELECTROMAGNETIC INTERACTIONS
EVEN-ODD NUCLEI
HELIUM ISOTOPES
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
NUCLEI
ORIENTATION
PHYSICAL PROPERTIES
QUASI PARTICLES
SPECTRA
STABLE ISOTOPES
THERMODYNAMIC PROPERTIES
665430* - Other Topics in Quantum Fluids & Solids- (1992-)