NUCLEATION RATES FOR MAGNETIZATION REVERSAL IN BIAXIAL FERROMAGNETS

被引:3
作者
BRAUN, HB
机构
[1] Theoretische Physik, ETH-Hönggerberg, 8093, Zurich
基金
美国国家科学基金会;
关键词
9;
D O I
10.1109/20.278947
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A biaxial ferromagnet in an external magnetic field is considered. A metastable state is realized when the magnetization is uniform and pointing antiparallel to the external field. At finite temperature fluctuations drive the configuration over the lowest lying saddle point of energy. A known unstable structure is identified as this saddle point and nucleations rates are calculated by means of the Brinkman/Landauer-Swanson/Langer (BLSL) approach.
引用
收藏
页码:4787 / 4789
页数:3
相关论文
共 12 条
[1]   BROWNIAN MOTION IN A FIELD OF FORCE AND THE DIFFUSION THEORY OF CHEMICAL REACTIONS .2. [J].
BRINKMAN, HC .
PHYSICA, 1956, 22 (03) :149-155
[2]   NUCLEATION OF MAGNETIZATION REVERSAL VIA CREATION OF PAIRS OF BLOCH WALLS [J].
BROZ, JS ;
BRAUN, HB ;
BRODBECK, O ;
BALTENSPERGER, W ;
HELMAN, JS .
PHYSICAL REVIEW LETTERS, 1990, 65 (06) :787-789
[3]   NUCLEATION THEORY OF OVERDAMPED SOLITON MOTION [J].
BUTTIKER, M ;
LANDAUER, R .
PHYSICAL REVIEW A, 1981, 23 (03) :1397-1410
[4]  
Coddington A., 1955, THEORY ORDINARY DIFF
[5]  
HANGGI P, 1990, REV MOD PHYS, V62, P251, DOI 10.1103/RevModPhys.62.251
[6]  
LANDAUER R, 1961, PHYS REV, V121
[7]   THEORY OF CONDENSATION POINT [J].
LANGER, JS .
ANNALS OF PHYSICS, 1967, 41 (01) :108-+
[8]   STATISTICAL THEORY OF DECAY OF METASTABLE STATES [J].
LANGER, JS .
ANNALS OF PHYSICS, 1969, 54 (02) :258-&
[9]  
LEEUW FH, 1980, REP PROGR PHYS, V43, P690
[10]   TIME SCALE OF INTRINSIC RESISTIVE FLUCTUATIONS IN THIN SUPERCONDUCTING WIRES [J].
MCCUMBER, DE ;
HALPERIN, BI .
PHYSICAL REVIEW B-SOLID STATE, 1970, 1 (03) :1054-+