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1.Ëæ×ÅÑо¿µÄÉîÈ룬ÈËÃÇ·¢ÏÖµÍάÄÉÃ׳߶ȵÄÌåϵÖÐ×ÔÐý×ÔÓɶÈÔÚºÜ¶à·½ÃæÓÅÓÚµçºÉ£¬³ä·ÖÀûÓõç×ÓµÄ×ÔÐýÊôÐÔ£¬ÓпÉÄÜ»ñµÃ¹¦ÄܸüÇ¿´ó¡¢²Ù¿Ø¸ü·½±ã¡¢´¦ÀíËٶȸü¿ìµÄÐÂÒ»´ú΢µç×ÓÆ÷¼þ¡£ As research continues, it is found that the spin degrees of freedom in the low-dimensional nano-scale system are superior to charge in many ways. By making full use of the properties of the electron spin, it is possible to obtain new generation of microelectronic devices with more powerful functionality, more convenient manipulation and much faster processing speed. 2.Òì³£AMRÊÇÖ¸ÔÚ¸ÆîÑ¿óÐÍÃÌÑõ»¯ÎïÖз¢Ïֵıȴ«Í³AMR´ó¼¸¸öÊýÁ¿¼¶µÄ¸÷ÏòÒìÐԴŵç×èЧӦ¡£Æä»úÖÆÊǾ§¸ñ½á¹¹ÓÉÁ¢·½µ½Ð±·½µÄŤÇúÆÆ»µÁ˶ԳÆÐÔ£¬²úÉúÁËÒ»¸ö¶ÔÍⳡ¸÷ÏòÒìÐԵĴŵ¯ÐÔÏìÓ¦ºÍËæÖ®·¢ÉúµÄÏÔÖøµÄ´ÅÊäÔËÐÐΪ¡£ Abnormal AMR with several orders of magnitude than the traditional AMR found in the perovskite-type manganese oxides, originates from the broken symmetry, through cubic to orthorhombic distortion in the lattice structure, creating an anisotropic magneto-elastic response to an external field, and consequently to remarkable magneto-transport behavior[17]. 3.ÔÚÀíÂÛÉÏ£¬ÕâÖÖÓÉ×ÔÐý¹ìµÀñîºÏÓÕµ¼µÄ¸÷ÏòÒìÐԴŵç×èÏÖÏóÔÚ¸ßÎÂÏÂʵÏֵĿÉÄÜÐÔ²¢Ã»ÓÐÃ÷ÏÔµÄÎïÀíÏÞÖÆ¡£ In theory, the possibility the AMR phenomenon induced by the spin-orbit coupling achieve on high temperature is no limit. лл 4.ËûÃÇÉè¼ÆÁËÒ»ÖÖËí´©Ôª¼þ£¬ÆäÖ»ÓÐÒ»¸ö°üº¬IrMn·´Ìú´ÅÌåµÄ´ÅÐԵ缫ºÍÒ»¸ö±»MgOÊÆÀݲã·Ö¿ªµÄÎÞ´ÅÐÔµÄPtµç¼«¡£ The designed tunneling element by Park et al.[18] includes only one IrMn antiferromagnetic magnetic electrode and a Pt electrode, separated by a non-magnetic MgO barrier layer. [ Last edited by sunliuqian on 2013-3-19 at 09:23 ] |
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sunliuqian
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2Â¥2013-03-19 10:39:02
BoaHancock
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As research continues, it is found that the spin degrees of freedom in the low-dimensional nano-scale system is superior to change in many ways. By making full use of the properties of the electron spin, it is possible to obtain a new generation of microelectronic devices with more robust functionality, more convenient manipulation and much faster processing speed. Abnormal AMR with several orders of magnitude than the traditional AMR found in the perovskite-type manganese oxides, originates from the broken symmetry, through cubic to orthorhombic distortion in the lattice structure, creating an anisotropic magneto-elastic response to an external field, and consequently to remarkable magneto-transport behavior. In theory, the possibility the AMR phenomenon induced by the spin-orbit coupling achieves at high temperature is not limited. The designed tunneling element by Park et al. includes only one IrMn antiferromagnetic magnetic electrode and a Pt electrode, separated by a non-magnetic MgO barrier layer. |

3Â¥2013-03-19 11:58:33
hookhans
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sunliuqian: ½ð±Ò+20, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ¹ý½±ÁË ¹þ¹þ ¾³£À´ÇóÖú, Ò²»áÊÕ»ñºÜ¶àµÄ ÄãµÄ·Òë×ÜÄܸøÈ˾ªÏ²,,,3q 2013-03-19 14:49:46
sunliuqian: ½ð±Ò+20, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ¹ý½±ÁË ¹þ¹þ ¾³£À´ÇóÖú, Ò²»áÊÕ»ñºÜ¶àµÄ ÄãµÄ·Òë×ÜÄܸøÈ˾ªÏ²,,,3q 2013-03-19 14:49:46
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Æäʵ,LZµÄ·ÒëÒѾ¹»ºÃµÄÁË,Ö»ÊÇÒª¸ü¾«ÒæÇ󾫰ÕÁË. ÒÔÏÂÊǵÄÎÒµÄÓïÑÔ,½÷¹©²Î¿¼: 1.Ëæ×ÅÑо¿µÄÉîÈ룬ÈËÃÇ·¢ÏÖ µÍάÄÉÃ׳߶ȵÄÌåϵÖÐ ×ÔÐý×ÔÓÉ¶È ÔÚºÜ¶à·½ÃæÓÅÓÚµçºÉ£¬³ä·ÖÀûÓõç×ÓµÄ×ÔÐýÊôÐÔ£¬ÓпÉÄÜ»ñµÃ¹¦ÄܸüÇ¿´ó¡¢²Ù¿Ø¸ü·½±ã¡¢´¦ÀíËٶȸü¿ìµÄÐÂÒ»´ú΢µç×ÓÆ÷¼þ¡£ With the development of research, it is found that the spin degrees of freedom in low-dimensional nano-scale systems are superior to the charge in many ways. By taking advantage of the spin properties of electron, it is possible to obtain new generation microelectronic devices with more powerful functionality, more convenient manipulation and much faster processing speed. 2.Òì³£AMRÊÇ Ö¸ÔÚ¸ÆîÑ¿óÐÍÃÌÑõ»¯ÎïÖз¢ÏÖµÄ ±È´«Í³AMR´ó¼¸¸öÊýÁ¿¼¶µÄ ¸÷ÏòÒìÐԴŵç×èЧӦ¡£Æä»úÖÆ ÊǾ§¸ñ½á¹¹ÓÉÁ¢·½µ½Ð±·½µÄŤÇúÆÆ»µÁ˶ԳÆÐÔ£¬²úÉúÁËÒ»¸ö¶ÔÍⳡ ¸÷ÏòÒìÐԵĴŵ¯ÐÔÏìÓ¦ ºÍ ËæÖ®·¢ÉúµÄÏÔÖøµÄ´ÅÊäÔËÐÐΪ¡£ Abnormal AMR refers to the anisotropic magnetoresistance effect found in perovskite-type manganese oxides, which is several orders of magnitude higher than that of the traditional AMR. The abnormal AMR originates from the broken symmetry caused by the distortion of the crystal (lattice) structure from cubic to orthorhombic, which in turn creates (exerts) an anisotropic magneto-elastic response to the external field and the consequent remarkable magneto-transport behavior[17]. 3.ÔÚÀíÂÛÉÏ£¬ÕâÖÖÓÉ×ÔÐý¹ìµÀñîºÏÓÕµ¼ µÄ¸÷ÏòÒìÐԴŵç×èÏÖÏó ÔÚ¸ßÎÂÏÂʵÏֵĿÉÄÜÐÔ²¢Ã»ÓÐÃ÷ÏÔµÄÎïÀíÏÞÖÆ¡£ In theory, there is no apparent physical limitation on the possibility of realizing the AMR effect induced by the spin-orbit coupling at high temperature. 4.ËûÃÇÉè¼ÆÁËÒ»ÖÖËí´©Ôª¼þ£¬ÆäÖ»ÓÐÒ»¸ö°üº¬IrMn·´Ìú´ÅÌåµÄ´ÅÐԵ缫ºÍÒ»¸ö±»MgOÊÆÀݲã·Ö¿ªµÄÎÞ´ÅÐÔµÄPtµç¼«¡£ The tunneling element designed by Park et al.[18] contains only one IrMn antiferromagnetic magnetic electrode and a Pt electrode separated by a non-magnetic MgO barrier layer. |

4Â¥2013-03-19 13:21:46














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