Scattering-matrix formalism of electron transport through three-terminal quantum structures: formulation and application to Y-junction devices

被引:15
作者
Csontos, D [1 ]
Xu, HQ [1 ]
机构
[1] Lund Univ, SE-22100 Lund, Sweden
关键词
D O I
10.1088/0953-8984/14/47/324
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
In this paper we present a formalism for the calculation of electron transport through three-terminal junction devices, which have received attention due to their recently demonstrated non-linear electrical properties. The formalism, which is based on the scattering-matrix method, takes quantum interference effects fully into account. Furthermore, the formalism provides numerical stability in the calculations as well as large flexibility in the modelling of arbitrary potential profiles due to the common basis approach used in the formulation. The method is used to calculate the transport properties for Y-shaped three-terminal ballistic junction (TBJ) structures with configurations typical of recently performed experiments. Quantum interference effects are shown to strongly influence the transport characteristics of TBJ structures due to complex scattering of the electrons in the cavity-like coupling window between the three arms of the device. The theoretical approach presented in this paper provides a flexible tool for the study of such quantum interference effects, which may play an important role in the design and functionality of future nanoscale devices based on three-terminal junctions.
引用
收藏
页码:12513 / 12528
页数:16
相关论文
共 66 条
  • [1] Rectification properties of carbon nanotube "Y-junctions"
    Andriotis, AN
    Menon, M
    Srivastava, D
    Chernozatonskii, L
    [J]. PHYSICAL REVIEW LETTERS, 2001, 87 (06) : 66802 - 1
  • [2] Ballistic switching and rectification in single wall carbon nanotube Y junctions
    Andriotis, AN
    Menon, M
    Srivastava, D
    Chernozatonskii, L
    [J]. APPLIED PHYSICS LETTERS, 2001, 79 (02) : 266 - 268
  • [3] COMBINED EFFECT OF DISORDER AND INTERACTION ON THE CONDUCTANCE OF A ONE-DIMENSIONAL FERMION SYSTEM
    APEL, W
    RICE, TM
    [J]. PHYSICAL REVIEW B, 1982, 26 (12): : 7063 - 7065
  • [4] Experimental evidence for resonant tunneling in a Luttinger liquid
    Auslaender, OM
    Yacoby, A
    de Picciotto, R
    Baldwin, KW
    Pfeiffer, LN
    West, KW
    [J]. PHYSICAL REVIEW LETTERS, 2000, 84 (08) : 1764 - 1767
  • [5] Hall potentiometer in the ballistic regime
    Baelus, BJ
    Peeters, FM
    [J]. APPLIED PHYSICS LETTERS, 1999, 74 (11) : 1600 - 1602
  • [6] CLASSICAL AND QUANTUM BALLISTIC-TRANSPORT ANOMALIES IN MICROJUNCTIONS
    BARANGER, HU
    DIVINCENZO, DP
    JALABERT, RA
    STONE, AD
    [J]. PHYSICAL REVIEW B, 1991, 44 (19) : 10637 - 10675
  • [7] BEENAKKER CWJ, 1991, SOLID STATE PHYS, V44, P1
  • [8] Crossover from marginal Fermi liquid to Luttinger liquid behavior in carbon nanotubes -: art. no. 201106
    Bellucci, S
    González, J
    [J]. PHYSICAL REVIEW B, 2001, 64 (20)
  • [9] Luttinger-liquid behaviour in carbon nanotubes
    Bockrath, M
    Cobden, DH
    Lu, J
    Rinzler, AG
    Smalley, RE
    Balents, L
    McEuen, PL
    [J]. NATURE, 1999, 397 (6720) : 598 - 601
  • [10] GENERALIZED MANY-CHANNEL CONDUCTANCE FORMULA WITH APPLICATION TO SMALL RINGS
    BUTTIKER, M
    IMRY, Y
    LANDAUER, R
    PINHAS, S
    [J]. PHYSICAL REVIEW B, 1985, 31 (10): : 6207 - 6215