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author:

庄航 (庄航.) [1] | 陈磊 (陈磊.) [2] | 俞金玲 (俞金玲.) [3] (Scholars:俞金玲)

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PKU

Abstract:

采用化学气相沉积法制备三维拓扑绝缘体Bi2 Se3纳米片,对其进行详细的表征并研究样品的圆偏振光致电流.在1064 nm圆偏振激光激发下,Bi2 Se3纳米片的圆偏振光致电流强度随着入射角的增大而逐渐增大.研究发现,圆偏振光电流强度随着温度的降低先增大后减小,这与动量弛豫时间及电子空穴复合率相关.此外,通过外加离子液体栅压调控Bi2 Se3纳米片的圆偏振光致电流,其强度随着外加偏压的增大而减小,这是由于所测得的圆偏振光致电流由拓扑绝缘体Bi2 Se3表面信号与二维电子气信号叠加形成,且二者方向相反导致.

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  • [ 1 ] [庄航]福州大学
  • [ 2 ] [陈磊]福州大学
  • [ 3 ] [俞金玲]福州大学

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Source :

福州大学学报(自然科学版)

ISSN: 1000-2243

CN: 35-1337/N

Year: 2021

Issue: 4

Volume: 49

Page: 458-463

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count: -1

Chinese Cited Count:

30 Days PV: 1

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