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Volumn 306, Issue 5693, 2004, Pages 86-89

The Kondo effect in the presence of ferromagnetism

Author keywords

[No Author keywords available]

Indexed keywords

CORRELATION METHODS; ELECTRIC CONDUCTANCE; ELECTRIC POTENTIAL; ELECTROCHEMICAL ELECTRODES; ELECTRON TUNNELING; MAGNETIC FIELDS; SIGNAL DETECTION;

EID: 7544223328     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1102068     Document Type: Article
Times cited : (544)

References (28)
  • 4
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    • J. Park et al., Nature 417, 722 (2002).
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    • Park, J.1
  • 5
    • 0037071820 scopus 로고    scopus 로고
    • W. Liang et al., Nature 417, 725 (2002).
    • (2002) Nature , vol.417 , pp. 725
    • Liang, W.1
  • 9
    • 7544227658 scopus 로고    scopus 로고
    • note
    • In the Kondo ground state, the localized spin is screened by the conduction electrons, suppressing magnetic interactions. In the magnetic ground state, spin degeneracy is broken, which suppresses spin fluctuations and Kondo correlations (26).
  • 15
    • 0034618560 scopus 로고    scopus 로고
    • H. Park et al., Nature 407, 57 (2000).
    • (2000) Nature , vol.407 , pp. 57
    • Park, H.1
  • 21
    • 7544238940 scopus 로고    scopus 로고
    • note
    • Coulomb blockade conductance peaks are not generally symmetric in V nor do they have similar heights for positive and negative bias, because the capacitances and resistances to the two electrodes are different in general (27).
  • 22
    • 7544233951 scopus 로고    scopus 로고
    • J. Martinek et al., http://arxiv.org/abs/cond-mat/ 0406323 (2004).
    • (2004)
    • Martinek, J.1
  • 23
    • 7544237069 scopus 로고    scopus 로고
    • note
    • In addition to the Kondo signals, tunneling through the independent electron resonances should be expected to produce peaks in G(V) centered at the Coulomb blockade energy thresholds, with widths on the order of Γ. However, we do not usually resolve thes Coulomb blockade peaks in the Kondo samples. Estimates of Γ as large as many tens of mill-electron volts suggest that they would be difficult to observe. Nevertheless, we do expect that electron tunneling through these broad single-electron resonances contributes to the asymmetric conductance background underlying the Kondo signals.
  • 28
    • 7544226971 scopus 로고    scopus 로고
    • note
    • We thank F. Kuemmeth for experimental help and J. Barnaś, L. Borda, P. Bruno, R. Bulla, J. von Delft, L. Glazman, H. Imamura, J. König, S. Maekawa, J. Petta, A. Rosch, G. Schön, M. Sindel, J. Stankowski, M. Vojta, and Y. Utsumi for discussions. This work was supported by NSF through the Cornell Center for Materials Research (grant DMR-0079992) and use of the Cornell NanoScale Facility; by the Defense Advanced Research Projects Agency/Office of Naval Research (grant N00173-03-1-G011); by the Army Research Office (grant DAAD19-01-1-0S41); and by the Deutsche Forschungsgemeinshaft under the Center for Functional Nanostructures, "Spintronics" Research and Training Network of the European Community (EC) (grant RTN2-2001-00440), project P8Z/ K8N/044/P03/2001 and EC contract G5MA-CT-2002-04049.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.