Matching effect in superconducting NbN thin film with a square lattice of hole

• 来源期刊: 中国物理B（英文版）
• 关键词: flux pinning superconducting thin film matching effect
• 年，卷（期）: 2009,（10）
• 页码范围: 4486-4489
• 页数: 4页
• 语种: 英文

摘要

A square hole array is fabricated over a micro-bridge of NbN thin film by electron beam lithography and reactiveion milling.Magneto-resistance is measured across the micro-bridge filled with a hole array near the superconductingtransition temperature.It is found that magneto-resistance minima occur when the number of vortices is an integermultiple or a fractional multiple of the number of holes.The temperature and the current dependences of the matchingeffect are studied.