ZERO-FIELD MU-SR IN CRYSTALLINE C-60

被引：15

作者：

DUTY, TL

BREWER, JH

CHOW, K

KIEFL, RF

MACFARLANE, AW

MORRIS, GD

SCHNEIDER, JW

HITTI, B

LICHTI, R

BRARD, L

FISCHER, JE

SMITH, AB

STRONGIN, RM

机构：

[1] RICE UNIV, DEPT PHYS, HOUSTON, TX 77251 USA

[2] UNIV PENN, RES STRUCT MATTER LAB, PHILADELPHIA, PA 19104 USA

[3] TEXAS TECH UNIV, DEPT PHYS, LUBBOCK, TX 79409 USA

[4] UNIV PENN, DEPT MAT SCI, PHILADELPHIA, PA 19104 USA

[5] UNIV PENN, DEPT CHEM, PHILADELPHIA, PA 19104 USA

来源：

HYPERFINE INTERACTIONS | 1994年 / 86卷 / 1-4期

关键词：

D O I：

10.1007/BF02068978

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The C60Mu radical in polycrystalline C60 has been studied in zero magnetic field between 9 K and 200 K, and at room temperature. At low temperatures, we observe three low-frequency oscillations which correspond to the intra-triplet transitions of a completely anisotropic muon-electron hyperfine interaction. These signals exhibit a strongly temperature-dependent T1, attributed to thermally-activated jump rotational diffusion of the C60Mu, radical. A fit to an Arhenius law yields an activation energy of 200(20) mev for temperatures below the fcc-sc structural phase transition. At room temperature only the motionally-narrowed 325 Mhz singlet-triplet transition is observed.

引用

页码：789 / 795

页数：7

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