Jahn-Teller effect in the organic ferromagnet TDAE-C60

被引：3

作者：

Arcon, D

Jeglic, P

Apih, T

Omerzu, A

Blinc, R

机构：

[1] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia

[2] Jozef Stefan Inst, Ljubljana 1000, Slovenia

来源：

CARBON | 2004年 / 42卷 / 5-6期

关键词：

fullerene; NMR;

D O I：

10.1016/j.carbon.2003.12.052

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on the measurements of the C-13 NMR lineshape in the organic ferromagnet TDAE-C-60 between room temperature and 4 K as well as on a simulation of the lineshape in this temperature interval. It is shown that the sudden increase in the inhomogeneous C-13 NMR linewidth in the middle of the ferromagnetic phase can be explained by the freeze out of the pseud-orotations of the axes of the Jahn-Teller distortions of the C-60(-) ions. The correlation times for the Jahn-Teller dynamics of the C-60(-) ions have been extracted from a comparison of experimental and simulated C-13 NMR lineshapes. A strong correlation between spin ordering and orbital ordering has been found. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1175 / 1178

页数：4

共 22 条

[1] ORGANIC MOLECULAR SOFT FERROMAGNETISM IN A FULLERENE-C60 [J].

ALLEMAND, PM ;

KHEMANI, KC ;

KOCH, A ;

WUDL, F ;

HOLCZER, K ;

DONOVAN, S ;

GRUNER, G ;

THOMPSON, JD .

SCIENCE, 1991, 253 (5017) :301-303

[2] C-13 NMR of the organic ferromagnet TDAE-C-60 [J].

Arcon, D ;

Dolinsek, J ;

Blinc, R .

PHYSICAL REVIEW B, 1996, 53 (14) :9137-9142

[3] Ferromagnetic resonance in TDAE-C60 [J].

Arcon, D ;

Cevc, P ;

Omerzu, A ;

Blinc, R .

PHYSICAL REVIEW LETTERS, 1998, 80 (07) :1529-1532

[4]

ARCON D, 2002, EPL-EUROPHYS LETT, V57, P80

[5] Beltlike C60- electron spin density distribution in the organic ferromagnet TDAE-C60 -: art. no. 086402 [J].

Blinc, R ;

Jeglic, P ;

Apih, T ;

Seliger, J ;

Arcon, D ;

Omerzu, A .

PHYSICAL REVIEW LETTERS, 2002, 88 (08) :4

[6] Magnetic resonance of the weak organic magnet TDAE-C-60 [J].

Blinc, R ;

Arcon, D ;

Cevc, P ;

Mihailovic, D ;

Omerzu, A .

APPLIED MAGNETIC RESONANCE, 1996, 11 (02) :203-228

[7] Antiferromagnetic correlations and weak ferromagnetism in a TDAE(+)-C-60(-) single crystal [J].

Blinc, R ;

Pokhodnia, K ;

Cevc, P ;

Arcon, D ;

Omerzu, A ;

Mihailovic, D ;

Venturini, P ;

Golic, L ;

Trontelj, Z ;

Luznik, J ;

Jeglicic, Z ;

Pirnat, J .

PHYSICAL REVIEW LETTERS, 1996, 76 (03) :523-526

[8] Superconductivity in fullerides [J].

Gunnarsson, O .

REVIEWS OF MODERN PHYSICS, 1997, 69 (02) :575-606

[9] On the Theory of Ferromagnetism [J].

Heisenberg, W. .

ZEITSCHRIFT FUR PHYSIK, 1928, 49 (9-10) :619-636

[10]

JEGLIC P, 2003, PHYS REV B, V68

← 1 2 3 →