Experimental generation and observation of intrinsic localized spin wave modes in an antiferromagnet

被引：231

作者：

Schwarz, UT ^{[1
]}

English, LQ ^{[1
]}

Sievers, AJ ^{[1
]}

机构：

[1] Cornell Univ, Atom & Solid State Phys Lab, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.83.223

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By driving with a microwave pulse the lowest frequency antiferromagnetic resonance of the quasi-1D biaxial antiferromagnet (C2H5NH3)(2)CuCl4 into an unstable region, intrinsic localized spin waves have been generated and detected in the spin wave gap. These findings are consistent with the prediction that nonlinearity plus lattice discreteness can lead to localized excitations with dimensions comparable to the lattice constant.

引用

页码：223 / 226

页数：4

共 20 条

[1] Breathers in nonlinear lattices: Existence, linear stability and quantization [J].

Aubry, S .

PHYSICA D-NONLINEAR PHENOMENA, 1997, 103 (1-4) :201-250

[2] COMPUTER-SIMULATION OF INTRINSIC LOCALIZED MODES IN ONE-DIMENSIONAL AND 2-DIMENSIONAL ANHARMONIC LATTICES [J].

BURLAKOV, VM ;

KISELEV, SA ;

PYRKOV, VN .

PHYSICAL REVIEW B, 1990, 42 (08) :4921-4927

[3]

CHAIKIN PM, 1995, PRINCIPLES CONDENSED, pCH10

[4] ENERGY LOCALIZATION IN NONLINEAR LATTICES [J].

DAUXOIS, T ;

PEYRARD, M .

PHYSICAL REVIEW LETTERS, 1993, 70 (25) :3935-3938

[5] MAGNETIC MEASUREMENTS ON (C2H5NH3)2 CUCL4 - FERROMAGNETIC LAYERS COUPLED BY A VERY WEAK ANTIFERROMAGNETIC INTERACTION [J].

DEJONGH, LJ ;

VANAMSTE.WD ;

MIEDEMA, AR .

PHYSICA, 1972, 58 (02) :277-&

[6] Discrete breathers [J].

Flach, S ;

Willis, CR .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1998, 295 (05) :181-264

[7] MAGNETIC SOLITONS [J].

KOSEVICH, AM ;

IVANOV, BA ;

KOVALEV, AS .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1990, 194 (3-4) :117-238

[8] A GENERAL THEORY OF MAGNETIC RESONANCE ABSORPTION [J].

KUBO, R ;

TOMITA, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1954, 9 (06) :888-919

[9] (C2H5NH3)2CuCl4:: A physical system for the experimental investigation of intrinsic localized modes [J].

Lai, R ;

Sievers, AJ .

PHYSICAL REVIEW LETTERS, 1998, 81 (09) :1937-1940

[10] Modulational instability of nonlinear spin waves in easy-axis antiferromagnetic chains [J].

Lai, R ;

Sievers, AJ .

PHYSICAL REVIEW B, 1998, 57 (06) :3433-3443

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