EVIDENCE FOR ENDOHEDRAL MUONIUM IN KXC60 AND CONSEQUENCES FOR ELECTRONIC-STRUCTURE

被引：118

作者：

KIEFL, RF

DUTY, TL

SCHNEIDER, JW

MACFARLANE, A

CHOW, K

ELZEY, JW

MENDELS, P

MORRIS, GD

BREWER, JH

ANSALDO, EJ

NIEDERMAYER, C

NOAKES, DR

STRONACH, CE

HITTI, B

FISCHER, JE

机构：

[1] UNIV SASKATCHEWAN, DEPT PHYS, SASKATOON S7N 0W0, SASKATCHEWAN, CANADA

[2] VIRGINIA STATE UNIV, DEPT PHYS, PETERSBURG, VA 23806 USA

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

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

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

[6] UNIV CONSTANCE, INST PHYS, W-7750 CONSTANCE, GERMANY

[7] UNIV BRITISH COLUMBIA, CANADIAN INST ADV RES, VANCOUVER V6T 2A6, BC, CANADA

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.69.2005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Positive muons injected into solid C60, K4C60, and K6C60 form vacuumlike muonium (mu+e-) with a (6-12)% probability. Observation of coherent spin precession of muonium establishes that all three materials are nonmagnetic and nonconducting at low temperatures. From the temperature dependence of the signals we estimate the electronic band gaps in K4C60 and K6C60 to be considerably smaller than in C60. The similarity of the muonium centers supports a model in which a muonium atom is caged inside the C60 molecule in pure C60 or the C60-x molecular ion in KxC60.

引用

页码：2005 / 2008

页数：4

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