Cotunneling spectroscopy in few-electron quantum dots -: art. no. 256801

被引：124
|
作者：
Zumbühl, DM
Marcus, CM
Hanson, MP
Gossard, AC
机构：
[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[2] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA
来源：
PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 25期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevLett.93.256801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Few-electron quantum dots are investigated in the regime of strong tunneling to the leads. Inelastic cotunneling is used to measure the two-electron singlet-triplet splitting above and below a magnetic field driven singlet-triplet transition. Evidence for a nonequilibrium two-electron singlet-triplet Kondo effect is presented. Cotunneling allows orbital correlations and parameters characterizing entanglement of the two-electron singlet ground state to be extracted from dc transport.
引用
收藏
页数：4
相关论文
共 50 条
  • [21] Classical behavior of few-electron parabolic quantum dots
    Ciftja, O.
    PHYSICA B-CONDENSED MATTER, 2009, 404 (12-13) : 1629 - 1631
  • [22] Thermopower of few-electron quantum dots with Kondo correlations
    Ye, LvZhou
    Hou, Dong
    Wang, Rulin
    Cao, Dewen
    Zheng, Xiao
    Yan, YiJing
    PHYSICAL REVIEW B, 2014, 90 (16):
  • [23] Tunable few-electron quantum dots in InAs nanowires
    Shorubalko, I.
    Pfund, A.
    Leturcq, R.
    Borgstroem, M. T.
    Gramm, F.
    Mueller, E.
    Gini, E.
    Ensslin, K.
    NANOTECHNOLOGY, 2007, 18 (04)
  • [24] Quantum dot in the Kondo regime coupled to superconductors -: art. no. 256801
    Buitelaar, MR
    Nussbaumer, T
    Schönenberger, C
    PHYSICAL REVIEW LETTERS, 2002, 89 (25)
  • [25] Few-electron semiconductor quantum dots in magnetic field
    Ciftja, Orion
    PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 4, 2009, 6 (04): : 825 - 828
  • [26] Excitation spectra of circular, few-electron quantum dots
    Kouwenhoven, LP
    Oosterkamp, TH
    Danoesastro, MWS
    Eto, M
    Austing, DG
    Honda, T
    Tarucha, S
    SCIENCE, 1997, 278 (5344) : 1788 - 1792
  • [27] Spectroscopy and level detuning of few-electron spin states in parallel InAs quantum dots
    Thelander, Claes
    Nilsson, Malin
    Bostrom, Florinda Vinas
    Burke, Adam
    Lehmann, Sebastian
    Dick, Kimberly A.
    Leijnse, Martin
    PHYSICAL REVIEW B, 2018, 98 (24)
  • [28] Tunnel magnetoresistance of quantum dots coupled to ferromagnetic leads in the sequential and cotunneling regimes -: art. no. 115334
    Weymann, I
    König, J
    Martinek, J
    Barnas, J
    Schön, G
    PHYSICAL REVIEW B, 2005, 72 (11)
  • [29] Few-electron quantum dots in InGaAs quantum wells: Role of fluctuations
    Granger, G.
    Studenikin, S. A.
    Kam, A.
    Sachrajda, A. S.
    Poole, P. J.
    APPLIED PHYSICS LETTERS, 2011, 98 (13)
  • [30] ORIGIN OF MAGIC ANGULAR MOMENTA IN FEW-ELECTRON QUANTUM DOTS
    RUAN, WY
    LIU, YY
    BAO, CG
    ZHANG, ZQ
    PHYSICAL REVIEW B, 1995, 51 (12): : 7942 - 7945
12345