Dynamic Approach to the Ground State of a Vortex System with Random Pinning
Dynamic Approach to the Ground State of a Vortex System with Random Pinning
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DOI：
10.1088/0256-307x/18/4/340
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发表时间：
2001-04
影响因子：
3.5
通讯作者：
Luo Meng-bo;Chen Qing-hu;Xu Zhu’an;Jiao Zheng-kuan
中科院分区：
文献类型：
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作者：
Luo Meng-bo;Chen Qing-hu;Xu Zhu’an;Jiao Zheng-kuan
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We study the ground state of a two-dimensional vortex system with random pinnings by cooling the vortex system to zero temperature. The peak of structure factor S(k) of vortices increases with vortex density B but decreases with pin density B, indicating that the vortex lattice becomes better and better ordered with increasing B. When B>B, the triangular vortex lattice is observed away from the pins. Repulsive vortex interactions destroy the Mott insulator phase which is predicted to occur at B = B. The crossover line between the strong Bose glass and the weak Bose glass is nearly independent of B for small B.