Narrow heavy-hole cyclotron resonances split by the cubic Rashba spin-orbit interaction in strained germanium quantum wells

被引:28
作者
Failla, M. [1 ]
Myronov, M. [1 ]
Morrison, C. [1 ]
Leadley, D. R. [1 ]
Lloyd-Hughes, J. [1 ]
机构
[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
来源
PHYSICAL REVIEW B | 2015年 / 92卷 / 04期
基金
英国工程与自然科学研究理事会;
关键词
PHONON INTERACTIONS; EFFECTIVE-MASS; GE CHANNELS; LINE-SHAPE; MOBILITY; FIELD; TIME; GAS; HETEROSTRUCTURES; SEMICONDUCTOR;
D O I
10.1103/PhysRevB.92.045303
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The spin-orbit interaction was found to split the cyclotron resonance of heavy holes confined in high-mobility, compressively strained germanium quantum wells. The interference between coherent spin-split cyclotron resonances was tracked on picosecond time scales using terahertz time-domain spectroscopy. Analysis in the time domain, or using a time-frequency decomposition based on the Gabor-Morlet wavelet, was necessary when the difference between cyclotron frequencies was comparable to the linewidth. The cubic Rashba spin-orbit coefficient beta was determined via two methods: (i) the magnetic-field dependence of the cyclotron frequencies, and (ii) the spin-resolved subband densities. An enhanced beta and spin polarization was created by tailoring the strain to enhance the spin-orbit interaction. The amplitude modulation of the narrow, interfering cyclotron resonances is a signature of spin coherences persisting for more than 10 ps.
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页数:6
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共 44 条
  • [1] ELECTRONIC-PROPERTIES OF TWO-DIMENSIONAL SYSTEMS
    ANDO, T
    FOWLER, AB
    STERN, F
    [J]. REVIEWS OF MODERN PHYSICS, 1982, 54 (02) : 437 - 672
  • [2] Quantum control of a Landau-quantized two-dimensional electron gas in a GaAs quantum well using coherent terahertz pulses
    Arikawa, T.
    Wang, X.
    Hilton, D. J.
    Reno, J. L.
    Pan, W.
    Kono, J.
    [J]. PHYSICAL REVIEW B, 2011, 84 (24):
  • [3] Colossal enhancement of spin-orbit coupling in weakly hydrogenated graphene
    Balakrishnan, Jayakumar
    Koon, Gavin Kok Wai
    Jaiswal, Manu
    Castro Neto, A. H.
    Oezyilmaz, Barbaros
    [J]. NATURE PHYSICS, 2013, 9 (05) : 284 - 287
  • [4] Shubnikov-de Haas oscillations of the conductivity of a two-dimensional gas in quantum wells based on germanium and silicon. Determination of the effective mass and g factor
    Berkutov, I. B.
    Andrievskii, V. V.
    Komnik, Yu. F.
    Mironov, O. A.
    Mironov, M.
    Leadley, D. R.
    [J]. LOW TEMPERATURE PHYSICS, 2009, 35 (02) : 141 - 145
  • [6] Zero-field spin splitting in modulation-doped AlxGa1-xN/GaN two-dimensional electron systems -: art. no. 222102
    Cho, KS
    Huang, TY
    Wang, HS
    Lin, MG
    Chen, TM
    Liang, CT
    Chen, YF
    Lo, I
    [J]. APPLIED PHYSICS LETTERS, 2005, 86 (22) : 1 - 3
  • [7] ELECTRONIC ANALOG OF THE ELECTROOPTIC MODULATOR
    DATTA, S
    DAS, B
    [J]. APPLIED PHYSICS LETTERS, 1990, 56 (07) : 665 - 667
  • [8] CYCLOTRON RESONANCE OF ELECTRONS AND HOLES IN SILICON AND GERMANIUM CRYSTALS
    DRESSELHAUS, G
    KIP, AF
    KITTEL, C
    [J]. PHYSICAL REVIEW, 1955, 98 (02): : 368 - 384
  • [9] HIGH-MOBILITY 2-D HOLE GASES IN STRAINED GE CHANNELS ON SI SUBSTRATES STUDIED BY MAGNETOTRANSPORT AND CYCLOTRON-RESONANCE
    ENGELHARDT, CM
    TOBBEN, D
    ASCHAUER, M
    SCHAFFLER, F
    ABSTREITER, G
    GORNIK, E
    [J]. SOLID-STATE ELECTRONICS, 1994, 37 (4-6) : 949 - 952
  • [10] Band structure, deformation potentals, and carrier mobility in strained Si, Ge, and SiGe alloys
    Fischetti, MV
    Laux, SE
    [J]. JOURNAL OF APPLIED PHYSICS, 1996, 80 (04) : 2234 - 2252