Switching effects in superconductor/ferromagnet/superconductor graphene junctions

doi:10.1088/1674-1056/22/12/127401

Abstract The Josephson effect in the superconductor/ferromagnet/superconductor (SFS) graphene Josephson junction is studied using the Dirac Bogoliubov-de Gennes (DBdG) formalism. It is shown that the SFS graphene junction drives 0–π transition with the increasing of p=h₀L/v_Fħ, which captures the effects of both the exchange field and the length of the junction; the spin-down current is dominant. The 0 state is stable for p < p_c (critical value p_c ≈ 0.80) and the π state is stable for p > p_c, where the free energy minima are at φ_g=0 and φ_g=π, respectively. The coexistence of the 0 and π states appears in the vicinity of p_c.

Keywords: superconductor junction grapheme switching effect

Received: 01 May 2013
Revised: 16 August 2013
Accepted manuscript online:

PACS:	74.50.+r	(Tunneling phenomena; Josephson effects)
	74.70.Wz	(Carbon-based superconductors)
	74.81.Fa	(Josephson junction arrays and wire networks)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11074088).

Corresponding Authors: Li Xiao-Wei
E-mail: lxw@hytc.edu.cn

Cite this article:

Li Xiao-Wei (李晓薇), Liu Dan (刘丹), Bao Yan-Hui (鲍艳辉) Switching effects in superconductor/ferromagnet/superconductor graphene junctions 2013 Chin. Phys. B 22 127401

[1]	Buzdin A I 2005 Rev. Mod. Phys. 77 935
[2]	Bulaevskii L N, Kuzii V V and Sobyanin A A 1977 JETP Lett. 25 290
[3]	Buzdin A I, Bulaevskii L N and Panyukov V 1982 JETP Lett. 35 178
[4]	Radovic Z, Lazarides N and Flytzanis N 2003 Phys. Rev. B 68 014501
[5]	Demler E A, Arnold G B and Beasley M R 1997 Phys. Rev. B 55 15174
[6]	Xu M J and Dou X M 2010 Chin. Phys. B 19 067301
[7]	Yu H L, Wang Z G and Pong J 2008 Chin. Phys. B 17 4627
[8]	Li X W 2007 Chin. Phys. 16 3514
[9]	Ryazanov V V, Oboznov V A, Rusanov A Yu, Veretennikov A V, Golubov A A and Aarts J 2001 Phys. Rev. Lett. 86 2427
[10]	Kontos T, Aprili M, Lesueur J, Genêt F, Stephanidis B and Boursier R 2002 Phys. Rev. Lett. 89 137007
[11]	Frolov S M, Van H D J, Oboznov V A, Bolginov V V and Ryazanov V V 2004 Phys. Rev. B 70 144505
[12]	Bauer A, Bentner J, Aprili M, Della R M L, Reinwald M, Wegscheider W and Strunk C 2004 Phys. Rev. Lett. 92 217001
[13]	Heersche H B, Jarillo-Herrero P, Oostinga J B, Vandersypen L M K and Morpurgo A F 2007 Nature 446 56
[14]	Du X, Skachko I and Andrei E Y 2008 Phys. Rev. B 77 184507
[15]	Haugen H, Huertas-Hernando D and Brataas A 2008 Phys. Rev. B 77 115406
[16]	Linder J, Yokoyama T, Huertas-Hernando D and Sudbo A 2008 Phys. Rev. Lett. 100 187004
[17]	Zhang Q, Fu D, Wang B, Zhang R and Xing D Y 2008 Phys. Rev. Lett. 101 047005
[18]	Son Y W, Cohen M L and Louie S G 2006 Nature 444 347
[19]	Kan E J, Li Z, Yang J and Hou J G 2007 Appl. Phys. Lett. 91 243116
[20]	Tian H Y and Wang J 2012 Chin. Phys. B 21 017203
[21]	Abanin D A, Morozov S V, Ponomarenko L A, Gorbachev R V, Mayorov A S, Katsnelson M I, Watanabe K, Taniguchi T, Novoselov K S, Levitov L S and Geim A K 2011 Science 332 328
[22]	Moghaddam A G and Zareyan M 2008 Phys. Rev. B 78 115413
[23]	Soodchomshom B, Tang I M and Hoonsawat R 2008 Physica C 468 2361
[24]	Liang Q F, Yu Y, Wang Q H and Dong J M 2008 Phys. Rev. Lett. 101 187002
[25]	Beenakker C W J 2006 Phys. Rev. Lett. 97 067007
[26]	Annunziata G, Enoksen H, Linder J, Cuoco M, Noce C and Sudbo A 2011 Phys. Rev. B 83 144520

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