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EFFECT OF VARIOUS OBSTACLES ON OSCILLATORY MAGNETOCONDUCTANCE OF QUANTUM DOUBLE-COUPLED CHANNELS
FAN, XD; GU, BY; YANG, GZ; LIN, TH
1994
发表期刊JOURNAL OF APPLIED PHYSICS
ISSN0021-8979
卷号75期号:5页码:2466-2472
摘要The characteristics of the magnetoconductance of a nonuniform electron waveguide containing various shaped obstacles are investigated by using a model of two-coupled tight-binding chains and the transfer-matrix approach. The variation of the magnetoconductance as a function of total magnetic flux PHI threading the obstacle region is presented. The effect of the interchain tunneling modulation on the magnetoconductance for double-mode and single-mode transport processes is different. When the energy of the incident electrons is just above the threshold energy for the opening of the second propagating mode at zero magnetic field, at some magnetic flux, the conductance abruptly decreases owing to the presence of mode quenching. The magnetoconductance for various multiply connected structures and one-dimensional superlattice (1DSL) type tunneling modulation structures is also evaluated. Owing to the presence of the miniband gaps to be formed by IDSL structures, different patterns in the magnetoconductance are found.
部门归属ACAD SINICA,INST PHYS,POB 603,BEIJING 100080,PEOPLES R CHINA; BEIJING UNIV,DEPT PHYS,MESOSCOP PHYS LABS,BEIJING 100871,PEOPLES R CHINA; CHINA CTR ADV SCI & TECHNOL,WORLD LAB,BEIJING 100080,PEOPLES R CHINA; ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
关键词Aharonov-bohm Interferometers Semiconductor Microstructures Matrix Approach Transport Conductance Transmission Coherence Systems
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/11948
专题理论物理所1978-2010年知识产出
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FAN, XD,GU, BY,YANG, GZ,et al. EFFECT OF VARIOUS OBSTACLES ON OSCILLATORY MAGNETOCONDUCTANCE OF QUANTUM DOUBLE-COUPLED CHANNELS[J]. JOURNAL OF APPLIED PHYSICS,1994,75(5):2466-2472.
APA FAN, XD,GU, BY,YANG, GZ,&LIN, TH.(1994).EFFECT OF VARIOUS OBSTACLES ON OSCILLATORY MAGNETOCONDUCTANCE OF QUANTUM DOUBLE-COUPLED CHANNELS.JOURNAL OF APPLIED PHYSICS,75(5),2466-2472.
MLA FAN, XD,et al."EFFECT OF VARIOUS OBSTACLES ON OSCILLATORY MAGNETOCONDUCTANCE OF QUANTUM DOUBLE-COUPLED CHANNELS".JOURNAL OF APPLIED PHYSICS 75.5(1994):2466-2472.
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