MAGNON THERMAL-CONDUCTIVITY OF SOLID HE-3 IN THE U2D2 ANTIFERROMAGNETIC PHASE

被引：21

作者：

FENG, YP

SCHIFFER, P

MIHALISIN, J

OSHEROFF, DD

机构：

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.65.1450

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first measurement of magnon thermal conductivity in monodomain single crystals of He3 in the U2D2 antiferromagnetic phase. The magnon mean free path was found first to rise rapidly upon cooling below TN and then more slowly at low temperatures, depending on the sample. The temperature dependence is consistent with magnon umklapp scattering at high T, i.e.,proportional to T-2 expkBT), with determined to be 5.8 mK. The limiting low-temperature values of varied from 0.3 to 3 m. © 1990 The American Physical Society.

引用

页码：1450 / 1453

页数：4

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