公开(公告)号：WO2017133672A1

公开(公告)日：2017-08-10

申请号：PCT/CN2017/072848

申请日：2017-02-03

Applicant: THE UNIVERSITY OF HONG KONG

Inventor： WANG, Jian ,  CHEUNG, King Tai ,  FU, Bin ,  YU, Zhizhou

IPC: G06F17/50

CPC classification number: G01R19/2506 ,  B82Y10/00 ,  B82Y35/00 ,  G01R19/0053 ,  G01R19/04 ,  G01R31/31702 ,  Y10S977/734 ,  Y10S977/842 ,  Y10S977/88 ,  Y10S977/936

Abstract: A fast algorithm is used to study the transient behavior due to the step-like pulse. This algorithm consists of two parts: The algorithm I reduces the computational complexity to T 0 N 3 for large systems as long as T 0 N 3 whenever T 2 beyond which it becomes T log 2 N for even longer time. Hence it is of order O(1) if T 2 . Benchmark calculation has been done on graphene nanoribbons with N=10 4 and T=10 8 . This new algorithm allows many large scale transient problems to be solved, including magnetic tunneling junctions and ferroelectric tunneling junctions that could not be achieved before.

Abstract translation:

快速算法用于研究由阶跃状脉冲引起的瞬态行为。 该算法由两部分组成：只要T N ^{3 算法II采用快速多极技术，并且当T 超过它时变成T log _{3 2 N甚至更长的时间。 因此，如果T ，它的阶数为O（1）。 对N = 10 4和T = 10 8的石墨烯纳米带进行了基准计算。 这种新算法可以解决许多大规模的瞬态问题，包括磁隧道结和铁电隧道结，这些都是以前无法实现的。}}