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Shot noise of the spin inelastic tunneling through a quantum dot with single molecule-magnet |
Chang Bo(常博)and Liang Jiu-Qing(梁九卿)† |
Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan 030006, China |
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Abstract We have studied the quantum fluctuations of inelastic spin-electron scattering in quantum dot with an embedded biaxial single molecule-magnet and particularly investigated the zero-frequency shot noise and Fano factor in different magnetic fields. It is found that the shot noise and Fano factor exhibit a stepwise behaviour as bias increases in the presence of interaction between the electron and molecule-magnet for a weak magnetic field. As magnetic field becomes strong, a dip is displayed in the shot-noise-bias curve due to the suppression of inelastic shot noise caused by the quantum tunneling of magnetisation. Because of the spontaneous inelastic tunneling at zero bias, a small shot noise occurs, which results in the case of Fano factor F >> 1. Moreover, our results show that the sweeping speed can also influence the shot noise and Fano factor obviously.
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Received: 29 June 2010
Revised: 26 August 2010
Accepted manuscript online:
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PACS:
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73.63.Kv
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(Quantum dots)
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74.78.Na
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(Mesoscopic and nanoscale systems)
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75.50.Xc
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75.45.+j
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(Macroscopic quantum phenomena in magnetic systems)
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Cite this article:
Chang Bo(常博)and Liang Jiu-Qing(梁九卿) Shot noise of the spin inelastic tunneling through a quantum dot with single molecule-magnet 2011 Chin. Phys. B 20 017307
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[1] |
Blanter Ya M and B"uttiker M 2000 wxPhys. Rep.336 1
|
[2] |
Ou-Yang S H, Lam C H and You J Q 2010 wxChin. Phys. B19 050519
|
[3] |
An X T, Li Y X and Liu J J 2007 wxActa Phys. Sin.56 4105 (in Chinese)
|
[4] |
Liang J Q, Wang R and Wang J M 2007 wxChin. Phys.16 2075
|
[5] |
Heersche H B, Groot Z, der Folk J A, van der Zant H S J, Romeike C, Wegewijs M R, Zobbi L, Barreca D, Tondello E and Cornia A 2006 wxPhys. Rev. Lett.96 206801
|
[6] |
Romeike C, Wegewijs M R, Ruben M, Wenzel W and Schoeller H 2007 wxPhys. Rev. B75 064404
|
[7] |
Elste F and Timm C 2007 wxPhys. Rev. B75 195341
|
[8] |
Timm C 2007 wxPhys. Rev. B76 014421
|
[9] |
Elste F and Timm C 2006 wxPhys. Rev. B73 235305
|
[10] |
Romeike C, Wegewijs M R, Ruben M, Wenzel W and Schoeller H 2006 wxPhys. Rev. Lett.96 196601
|
[11] |
Romeike C, Wegewijs M R, Ruben M, Wenzel W and Schoeller H 2006 wxPhys. Rev. Lett.97 206601
|
[12] |
Leuenberger M N and Mucciolo E R 2006 wxPhys. Rev. Lett.97 126601
|
[13] |
Misiorny M and Barna's J 2007 wxPhys. Rev. B75 134425
|
[14] |
Misiorny M and Barna's J 2007 wxPhys. Rev. B76 054448
|
[15] |
Gonzalez G and Leuenberger M N 2007 wxPhys. Rev. Lett.98 256804
|
[16] |
Timm C and Elste F 2006 wxPhys. Rev. B73 235304
|
[17] |
Lu H Z, Zhou B and Shen S Q 2009 wxPhys. Rev. B 79 174419
|
[18] |
Misiorny M, Weymann I and Barna's J 2009 wxPhys. Rev. B79 224420
|
[19] |
Chang B and Liang J Q 2010 wxPhys. Lett. A373 2985
|
[20] |
Kim G H and Kim T S 2004 wxPhys. Rev. Lett.92 137203
|
[21] |
Wernsdorfer W and Sessoli R 1999 wxScience284 133
|
[22] |
Dong B, Cui H L and Lei X L 2004 wxPhys. Rev. B69 205315
|
[23] |
Dong B, Cui H L, Lei X L and Horing N J M 2005 wxPhys. Rev. B71 045331
|
[24] |
Walczak K 2006 wxJ. Magn. Magn. Mater.305 475
|
[25] |
Jauho A P, Wingreen N S and Meir Y 1994 wxPhys. Rev. B50 5528
|
[26] |
Rastelli E and Tassi A 2001 wxPhys. Rev. B64 064410
|
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