-
用周期瞬子方法研究了反铁磁粒子中激发态量子隧道效应.给出了各种低激发态下的隧穿幅、能级分裂以及前置因子.用统计平均得到给定温度下的隧穿率.理论计算的隧穿率随温度的变化关系与实验结果相符.Quantum tunneling effect at excited states in antiferromagnetic particles is studied with the help of the periodic instanton mdthod. The transition amplitude, energy shift and prefactor of WKB exponential are given for various low-lying excited states. The tunneling rate at definite temperature is obtained by statistical average and the theoretical dependence of the tunneling rate on temperature is in agreement with the experimental results.
计量
- 文章访问数: 6066
- PDF下载量: 580
- 被引次数: 0