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The LLS equation is analyzed by Melnikov disturbing method when non-constant spin torque is considered. Computing codes are programmed by combining VC and MATLAB. The results reveal that the magnetization trace vibrates round the non-disturbing trace at first,and then surges when close to the reversal point,and the time of reversal is shorter compared with the trace with constant spin torque.
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Keywords:
- spin torque /
- magnetization /
- LLS equation /
- disturbing method
[1] [1]Wolf S A,Awschalom D D,Buhrman R A 2001 Science 294 1488
[2] [2]Kiselev S I,Sankey J C,Krivorotov I N,Emley N C 2003 Nature(London) 425 380
[3] [3]Slonczewski J, Magn J 1996 Magn. Mater 159 L1
[4] [4]Berger L 1996 Phys. Rev. B 54 9353
[5] [5]Maxximiliano dAquino 2004 Doctorate Thesis. Nonlinear magnetization dynamics in thin-films and nanoparticles. December
[6] [6]Yang Z Y 2007 Spin Anglular Momentum Transfer in Magnetic Nonostructure (Columbia:University of Missiouri-Columbia)
[7] [7]Bertotti G,Serpico C,Mayergoyz I D 2004 Pyhs. Rev. B 343 325
[8] [8]Bertotti G,Mayergoyz I D,Serpico C 2004 Physica B 343 325
[9] [9]Sun J Z 2000 Phys. Rev. B 62 570
[10] ]Pufall M R,Rippard W H,Kaka S,Russek S E,Silva T J,Katine J,Carey M 2004 Phys. Rev. B 69 214409
[11] ]Wang C K,Wang H S, Zhang Q G 1999 Chin. Phys. 8 185
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[1] [1]Wolf S A,Awschalom D D,Buhrman R A 2001 Science 294 1488
[2] [2]Kiselev S I,Sankey J C,Krivorotov I N,Emley N C 2003 Nature(London) 425 380
[3] [3]Slonczewski J, Magn J 1996 Magn. Mater 159 L1
[4] [4]Berger L 1996 Phys. Rev. B 54 9353
[5] [5]Maxximiliano dAquino 2004 Doctorate Thesis. Nonlinear magnetization dynamics in thin-films and nanoparticles. December
[6] [6]Yang Z Y 2007 Spin Anglular Momentum Transfer in Magnetic Nonostructure (Columbia:University of Missiouri-Columbia)
[7] [7]Bertotti G,Serpico C,Mayergoyz I D 2004 Pyhs. Rev. B 343 325
[8] [8]Bertotti G,Mayergoyz I D,Serpico C 2004 Physica B 343 325
[9] [9]Sun J Z 2000 Phys. Rev. B 62 570
[10] ]Pufall M R,Rippard W H,Kaka S,Russek S E,Silva T J,Katine J,Carey M 2004 Phys. Rev. B 69 214409
[11] ]Wang C K,Wang H S, Zhang Q G 1999 Chin. Phys. 8 185
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