Transport through artificial single-molecule magnets: Spin-pair state sequential tunneling and Kondo effects

doi:10.1088/1674-1056/22/2/027307

Abstract The transport properties of an artificial single-molecule magnet based on a CdTe quantum dot doped with a single Mn⁺² ion (S=5/2) are investigated by the non-equilibrium Green function method. We consider a minimal model where the Mn-hole exchange coupling is strongly anisotropic so that spin-flip is suppressed and the impurity spin S and a hole spin s entering quantum dot are coupled into spin pair states with (2S+1) sublevels. In the sequential tunneling regime, the differential conductance exhibits (2S+1) possible peaks, corresponding to resonance tunneling via (2S+1) sublevels. At low temperature, Kondo physics dominates transport and (2S+1) Kondo peaks occur in the local density of states and conductance. These peaks originate from the spin-singlet state formed by the holes in the leads and on the dot via higher-order processes and are related to the parallel and antiparallel spin pair states.

Keywords: artificial single-molecule magnet Hubbard Green function spin-pair Kondo effect

Received: 30 May 2012
Revised: 31 August 2012
Accepted manuscript online:

PACS:	73.63.Kv	(Quantum dots)
	72.10.-d	(Theory of electronic transport; scattering mechanisms)
	72.15.Qm	(Scattering mechanisms and Kondo effect)
	73.63.-b	(Electronic transport in nanoscale materials and structures)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10974124 and 11004124) and Shanxi Provincial Natural Science Foundation of China (Grant No. 2009011001-1).

Corresponding Authors: Nie Yi-Hang
E-mail: nieyh@sxu.edu.cn

Cite this article:

Niu Peng-Bin (牛鹏斌), Wang Qiang (王强), Nie Yi-Hang (聂一行) Transport through artificial single-molecule magnets: Spin-pair state sequential tunneling and Kondo effects 2013 Chin. Phys. B 22 027307

[1]	González G and Leuenberger M N 2007 Phys. Rev. Lett. 98 256804
[2]	Leggett A J, Chakravarty S, Dorsey A T, Fisher M P A, Garg A and Zwerger W 1987 Rev. Mod. Phys. 59 1
[3]	Heersche H B, de Groot Z, Folk J A, van der Zant H S J, Romeike C, Wegewijs M R, Zobbi L, Barreca D, Tondello E and Cornia A 2006 Phys. Rev. Lett. 96 206801
[4]	Romeike C, Wegewijs M R, Hofstetter W and Schoeller H 2006 Phys. Rev. Lett. 96 196601
[5]	Romeike C, Wegewijs M R, Hofstetter W and Schoeller H 2006 Phys. Rev. Lett. 97 206601
[6]	Jo M H, Grose J E, Baheti K, Deshmukh M M, Sokol J J, Rumberger E M, Hendrickson D N, Long J R, Park H and Ralph D C 2006 Nano Lett. 6 2014
[7]	Elste F and Timm C 2006 Phys. Rev. B 73 235305
[8]	González G, Leuenberger M N and Mucciolo E R 2008 Phys. Rev. B 78 054445
[9]	Elste F and Timm C 2010 Phys. Rev. B 81 024421
[10]	Misiorny M, Weymann I and Barnaś J 2011 Phys. Rev. Lett. 106 126602
[11]	Misiorny M and Barnaś J 2007 Phys. Rev. B 75 134425
[12]	Misiorny M and Barnaś J 2007 Phys. Rev. B 76 054448
[13]	Misiorny M and Barnaś J 2008 Phys. Rev. B 77 172414
[14]	Leuenberger M N and Mucciolo E R 2006 Phys. Rev. Lett. 97 126601
[15]	Candini A, Klyatskaya S, Ruben M, Wernsdorfer W and Affronte M 2011 Nano Lett. 11 2634
[16]	Peng J and Li S S 2012 Chin. Phys. Lett. 29 047301
[17]	Xue H B, Nie Y H, Li Z J and Liang J Q 2010 J. Appl. Phys. 108 033707
[18]	Xue H B, Nie Y H, Li Z J and Liang J Q 2011 J. Appl. Phys. 109 083706
[19]	Xue H B, Nie Y H, Li Z J and Liang J Q 2011 Phys. Lett. A 375 716
[20]	Chang B and Liang J Q 2011 Chin. Phys. B 20 017307
[21]	Fernández-Rossier J and Aguado R 2007 Phys. Rev. Lett. 98 106805
[22]	Xie Y, Duan S Q, Chu W D and Yang N 2010 Chin. Phys. B 19 117304
[23]	Xie Y, Duan S Q, Chu W D and Yang N 2010 Chin. Phys. B 19 117302
[24]	Zhong G H and Wang L M 2010 Chin. Phys. B 19 107202
[25]	Fang D K, Wu S Q, Zou C Y and Zhao G P 2012 Chin. Phys. Lett. 29 037303
[26]	Wang L, Zhao W, Hao Z B and Luo Y 2011 Chin. Phys. Lett. 28 057301
[27]	Sui B C, Fang L and Zhang C 2011 Acta Phys. Sin. 60 077302 (in Chinese)
[28]	Huang R, Song J, Guo Y Q, Wang X, Chen K J and Li W 2011 Acta Phys. Sin. 60 027301 (in Chinese)
[29]	Xie C M and Fan H Y 2011 Chin. Phys. B 20 120303
[30]	Li J, Wu S H, Zhang W W and Xi X Q 2011 Chin. Phys. B 20 100308
[31]	Xia J J and Nie Y H 2011 Chin. Phys. B 20 097306
[32]	Jia B Y, Yu Z Y, Liu Y M, Han L H, Yao W J, Feng H and Ye H 2011 Chin. Phys. B 20 027302
[33]	Wang Q, Liu J, Tang N and Zeng H S 2011 Chin. Phys. B 20 020303
[34]	Contreras-Pulido L D and Aguado R 2010 Phys. Rev. B 81 161309
[35]	Cronenwett S M, Oosterkamp T H and Kouwenhoven L P 1998 Science 281 540
[36]	Sasaki S, De Franceschi S, Elzerman J M, van der Wiel W G, Eto M, Tarucha S and Kouwenhoven L P 2000 Nature 405 764
[37]	Fransson Jonas 2010 Non-Equilibrium Nano-Physics: A Many-Body Approach (Dordrecht: Springer)
[38]	Esposito M and Galperin M 2009 Phys. Rev. B 79 205303
[39]	Kostyrko T and Bulka B R 2005 Phys. Rev. B 71 235306
[40]	Meir Y and Wingreen N S 1992 Phys. Rev. Lett. 68 2512
[41]	Haug H J W and Jauho A P 2008 Quantum Kinetics in Transport and Optics of Semiconductors (Berlin: Springer)
[42]	Tolea M and Bulka B R 2007 Phys. Rev. B 75 125301
[43]	Ng T K 1996 Phys. Rev. Lett. 76 487
[44]	Meir Y, Wingreen N S and Lee P A 1993 Phys. Rev. Lett. 70 2601

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Transport through artificial single-molecule magnets: Spin-pair state sequential tunneling and Kondo effects

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