Low-temperature thermodynamic and thermal-transport properties of decagonal Al65Cu20Co15

被引：41

作者：

Edagawa, K ^{[1
]}

Chernikov, MA ^{[1
]}

Bianchi, AD ^{[1
]}

Felder, E ^{[1
]}

Gubler, U ^{[1
]}

Ott, HR ^{[1
]}

机构：

[1] UNIV TOKYO, INST IND SCI, MINATO KU, TOKYO 106, JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.77.1071

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report measurements of the specific heat C-p(T) and of the thermal conductivities lambda(p)(T) along the periodic direction and lambda(q)(T) along a direction in the quasiperiodic plane for decagonal Al65Cu20Co15 at low temperatures. The phonon contribution to lambda(p)(T) shows a maximum at 25 K, typical for periodic crystals. The dominant feature in the phonon contribution to lambda(q)(T) is an extended plateau between 30 and 70 K, in agreement with the concept of generalized umklapp processes in quasicrystals. The coefficient gamma = 0.512 mJ g atom(-1) K-2 Of the linear term to C-p(T) indicates a low density of electronic states at E(F).

引用

页码：1071 / 1074

页数：4

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