SUPPRESSION OF TUNNELING BY INTERFERENCE IN HALF-INTEGER-SPIN PARTICLES

被引：291

作者：

LOSS, D

DIVINCENZO, DP

GRINSTEIN, G

机构：

[1] IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.69.3232

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Within a wide class of ferromagnetic and antiferromagnetic systems, quantum tunneling of magnetization direction is spin-parity dependent: it vanishes for magnetic particles with half-integer spin, but is allowed for integer spin. A coherent-state path-integral calculation shows that this topological effect results from interference between tunneling paths.

引用

页码：3232 / 3235

页数：4

共 19 条

[1] [Anonymous], 1987, SOLITONS INSTANTONS
[2] MACROSCOPIC QUANTUM TUNNELING IN MAGNETIC PROTEINS
AWSCHALOM, DD
SMYTH, JF
GRINSTEIN, G
DIVINCENZO, DP
LOSS, D
[J]. PHYSICAL REVIEW LETTERS, 1992, 68 (20) : 3092 - 3095
[3] MACROSCOPIC QUANTUM TUNNELING IN ANTIFERROMAGNETS
BARBARA, B
CHUDNOVSKY, EM
[J]. PHYSICS LETTERS A, 1990, 145 (04) : 205 - 208
[4] QUANTAL PHASE-FACTORS ACCOMPANYING ADIABATIC CHANGES
BERRY, MV
[J]. PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1984, 392 (1802) : 45 - 57
[5] QUANTUM TUNNELING OF MAGNETIZATION IN SMALL FERROMAGNETIC PARTICLES
CHUDNOVSKY, EM
GUNTHER, L
[J]. PHYSICAL REVIEW LETTERS, 1988, 60 (08) : 661 - 664
[6] FRADKIN E, 1991, FIELD THEORIES CONDE, pCH5
[7] O(3) NONLINEAR SIGMA-MODEL AND THE TOPOLOGICAL DISTINCTION BETWEEN INTEGER-SPIN AND HALF-INTEGER-SPIN ANTIFERROMAGNETS IN 2 DIMENSIONS
HALDANE, FDM
[J]. PHYSICAL REVIEW LETTERS, 1988, 61 (08) : 1029 - 1032
[8] GEOMETRICAL INTERPRETATION OF MOMENTUM AND CRYSTAL MOMENTUM OF CLASSICAL AND QUANTUM FERROMAGNETIC HEISENBERG-CHAINS
HALDANE, FDM
[J]. PHYSICAL REVIEW LETTERS, 1986, 57 (12) : 1488 - 1491
[9] PATH INTEGRALS AND STATIONARY-PHASE APPROXIMATIONS
KLAUDER, JR
[J]. PHYSICAL REVIEW D, 1979, 19 (08): : 2349 - 2356
[10] DYNAMICS OF THE DISSIPATIVE 2-STATE SYSTEM
LEGGETT, AJ
CHAKRAVARTY, S
DORSEY, AT
FISHER, MPA
GARG, A
ZWERGER, W
[J]. REVIEWS OF MODERN PHYSICS, 1987, 59 (01) : 1 - 85

← 1 2 →