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Volumn 66, Issue 12, 2002, Pages 1253071-12530712

Spin dynamics in semiconductor nanocrystals

Author keywords

[No Author keywords available]

Indexed keywords

CADMIUM; SELENIUM;

EID: 34547649557     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.66.125307     Document Type: Article
Times cited : (158)

References (47)
  • 11
    • 84988763513 scopus 로고    scopus 로고
    • Ph.D. dissertation, University of California, Berkeley
    • A. V. Kadavanich, Ph.D. dissertation, University of California, Berkeley, 1997.
    • (1997)
    • Kadavanich, A.V.1
  • 22
    • 84988772558 scopus 로고    scopus 로고
    • note
    • Plotted for clarity is the FFT power spectrum, typically computed from a subset of the data that excludes the sharp peak at t=0. When significant, nonoscillatory backgrounds were subtracted from the data prior to calculation of the FFT.
  • 29
    • 84988754772 scopus 로고    scopus 로고
    • Ph.D. dissertation, University of California, Santa Barbara
    • J. A. Gupta, Ph.D. dissertation, University of California, Santa Barbara, 2002.
    • (2002)
    • Gupta, J.A.1
  • 30
  • 36
    • 84988784140 scopus 로고    scopus 로고
    • note
    • Two calibration factors were necessary to ensure that quantitative analysis of FFT linewidths produced correct values of Δf. The first relates the linewidths of the FFT magnitude and power spectra. While we could more reliably fit the power spectra, it is the linewidth of the FFT magnitude that is directly related to Δf. The second factor accounts for the fact that true Gaussian transforms are obtained only if the time-domain data are symmetric about t = 0. These factors were derived from analysis of simulated TRFR data using Eq. (6); the consistency of the procedure was checked with various values of Δg and H.
  • 37
    • 84988784153 scopus 로고    scopus 로고
    • note
    • The sole exception to this rule is the 40 Å core/shell NC sample, where the electron and exciton dephasing rates are nearly equal.
  • 38
    • 84988754791 scopus 로고    scopus 로고
    • personal communication
    • X. Peng (personal communication).
    • Peng, X.1
  • 43
    • 84988784176 scopus 로고    scopus 로고
    • note
    • Additional motivation for this speculation arises from data taken in CdS NC's prepared in a glass matrix (Ref. 27). Both CdSe and CdS NC's showed microsecond scale nonprecessing spin polarization in the Faraday and Voigt geometries. Observation of nonprecessing magnetization in the Voigt geometry is probably due to the random orientation of NC's in the sample. In CdS NC's, careful examination of the negative delay signal in the Voigt geometry at low fields (<3 mT) revealed W features similar to Hanlé effect data previously attributed to electron- nuclear hyperfine interactions in III-V bulk semiconductors (Ref. 42). Similar albeit less thorough measurements of the negative delay signal in CdSe NC's showed, no such features, for reasons which are unclear at present.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.