OBSERVATION OF FRACTIONAL SPIN S=1/2 ON OPEN ENDS OF S=1 LINEAR ANTIFERROMAGNETIC CHAINS - NONMAGNETIC DOPING

被引：171

作者：

GLARUM, SH

GESCHWIND, S

LEE, KM

KAPLAN, ML

MICHEL, J

机构：

[1] AT and T Bell Laboratories, Murray Hill

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.67.1614

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Approximately 0.5% of nonmagnetic divalent ions Zn, Cd, and Hg have been alternately substituted for Ni in the linear chain of antiferromagnetically coupled Ni2+ (S = 1) spins in [Ni(C2H8N2)2(NO2)]ClO4 (NENP). While at low temperature the pure NENP shows no EPR signal, the doped NENP shows identical EPR spectra corresponding to the fractional spin S = 1/2 states at the "open" ends of the Ni chains adjacent to the nonmagnetic substitutions.

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页码：1614 / 1617

页数：4

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共 17 条

[1] QUANTUM SPIN CHAINS AND THE HALDANE GAP [J].

AFFLECK, I .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1989, 1 (19) :3047-3072

[2] RIGOROUS RESULTS ON VALENCE-BOND GROUND-STATES IN ANTIFERROMAGNETS [J].

AFFLECK, I ;

KENNEDY, T ;

LIEB, EH ;

TASAKI, H .

PHYSICAL REVIEW LETTERS, 1987, 59 (07) :799-802

[3] HIGH-FIELD MAGNETIZATION OF A QUASI-ONE-DIMENSIONAL S=1 ANTIFERROMAGNET NI(C2H8N2)2NO2(CLO4) - OBSERVATION OF THE HALDANE GAP [J].

AJIRO, Y ;

GOTO, T ;

KIKUCHI, H ;

SAKAKIBARA, T ;

INAMI, T .

PHYSICAL REVIEW LETTERS, 1989, 63 (13) :1424-1427

[4] ELEMENTARY EXCITATION IN THE HALDANE STATE [J].

DATE, M ;

KINDO, K .

PHYSICAL REVIEW LETTERS, 1990, 65 (13) :1659-1662

[5] THERMAL-PROPERTIES OF CHAINS OF ANTIFERROMAGNETICALLY COUPLED SPINS WITH S = 1 - NUMERICAL EVIDENCE OF THE HALDANE GAP AT NONZERO TEMPERATURES [J].

DELICA, T ;

KOPINGA, K ;

LESCHKE, H ;

MON, KK .

EUROPHYSICS LETTERS, 1991, 15 (01) :55-61

[6] STRUCTURAL AND SPECTROSCOPIC STUDIES OF TRANSITION-METAL NITRITE COMPLEXES .9. CRYSTAL-STRUCTURES AND SPECTROSCOPIC PROPERTIES OF POLYMERIC [NI(C2H8N2)2(NO2)] CLO4, ITS MONONUCLEAR ZINC ANALOG, CIS-BIS(ETHANE-1,2-DIAMINE)(NITRITO-0,0')ZINC(II) PERCHLORATE, AND THE COMPLEXES CIS-(N,N,N',N'-TETRAMETHYL-ETHANE-1,2-DIAMINE)DI(NITRITO-0,0')-NICKEL(II) AND ZINC(II)OG [J].

FINNEY, AJ ;

HITCHMAN, MA ;

RASTON, CL ;

ROWBOTTOM, GL ;

WHITE, AH .

AUSTRALIAN JOURNAL OF CHEMISTRY, 1981, 34 (10) :2159-2176

[7] OBSERVATION OF S = 1/2 DEGREES OF FREEDOM IN AN S = 1 LINEAR-CHAIN HEISENBERG-ANTIFERROMAGNET [J].

HAGIWARA, M ;

KATSUMATA, K ;

AFFLECK, I ;

HALPERIN, BI ;

RENARD, JP .

PHYSICAL REVIEW LETTERS, 1990, 65 (25) :3181-3184

[8] CONTINUUM DYNAMICS OF THE 1-D HEISENBERG ANTI-FERROMAGNET - IDENTIFICATION WITH THE O(3) NON-LINEAR SIGMA-MODEL [J].

HALDANE, FDM .

PHYSICS LETTERS A, 1983, 93 (09) :464-468

[9] NON-LINEAR FIELD-THEORY OF LARGE-SPIN HEISENBERG ANTI-FERROMAGNETS - SEMI-CLASSICALLY QUANTIZED SOLITONS OF THE ONE-DIMENSIONAL EASY-AXIS NEEL STATE [J].

HALDANE, FDM .

PHYSICAL REVIEW LETTERS, 1983, 50 (15) :1153-1156

[10] THETA-PHYSICS AND QUANTUM SPIN CHAINS [J].

HALDANE, FDM .

JOURNAL OF APPLIED PHYSICS, 1985, 57 (08) :3359-3359