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Photonic spin Hall effect (PSHE) of light, similar to the spin Hall effect of an electronic system, is the interaction between photon spin-orbit of spin splitting phenomenon in refractive index gradient field. PSHE provides a new way to manipulate photons and accurately measure relevant physical effects. This paper studies the photon spin splitting in the magneto-optic Kerr effect, and establishes the quantitative relationship between the magneto-optical Kerr rotation and the PSHE. We have observed the magneto-optic Kerr effect of the action of an iron film in the magnetic field. After finishing experiments, we firstly analyze the amplified shift of the spin changing with the magnetic intensity in the case of horizontal polarization and vertical polarization incidence. Then, the Kerr rotations changing with the incident angle for different magnetizations are measured separately. Finally, comparing the above two results, we obtain that the accurate magneto-optic Kerr rotation angle is 6.7×10-5o/μm. If the position sensor based on phase-locked amplifier (20 nm) is used to measure the magneto-optic Kerr rotation angle, its precision can be improved by one or two orders of magnitude. These results prove that the PSHE not only can be used to accurately measure the magneto-optic Kerr effect, but also have great significance in magnetic film research. Especially, in terms of magnetic-optic devices, PSHE can be used to achieve the superior performance of endurance cycling and data retention.
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Keywords:
- spin Hall effect of light /
- magneto-optical coefficient /
- weak measurement system /
- magneto-optical Kerr effect
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[22] Ling X H, Yi X N, Zhou X X, Liu Y C, Shu W X, Luo H L, Wen S C 2014 Appl. Phys. Lett. 105 151101
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[25] Liu Y C, Ling X H, Yi X N, Zhou X X, Chen S Z, Ke Y G, Luo H L, Wen S C 2015 Opt. Lett. 40 756
[26] Yang Z J, Scheinfein M R 1993 J. Appl. Phys. 74 6810
[27] You C Y, Shin S C 1998 J. Appl. Phys. 84 541
[28] Luo H L, Zhou X X, Shu W X, Wen S C, Fan D Y 2011 Phys. Rev. A 84 043806
[29] Dressel J, Malik M, Miatto F M, Jordan A N, Boyd R W 2014 Rev. Mod. Phys. 86 307
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[1] Yoshioka N, Koshimura M, Ono M Takahashi M, Miyazaki T 1988 J. Magn. Meter. 74 51
[2] Guo Y L 1992 Modern physics knowledge 4 27 (in Chinese) [郭奕玲 1992 现代物理知识 4 27]
[3] Xu M, Ridler P J 1997 J. App Phys. 82 326
[4] Kato Y K, Myers R C, Gossard A C, Awschalom D D 2004 Science 306 1910
[5] Aoshima K, Funabashi N, Machida K, Miyamoto Y, Kawamura N, Kuga K, Shimidzu N, Sato F, Kimura T, Otani Y 2007 Appl. Phys. Lett. 91 052507
[6] Gu X F, Qian X, Ji Y, Chen L, Zhang J H 2012 Acta Phys. Sin. 61 037801 (in Chinese) [谷晓芳, 钱轩, 姬扬, 陈林, 赵建华 2012 物理学报 61 037801]
[7] Grunin A A, Zhdanov A G, Ezhov A A, Ganshina E A, Fedyanin A A 2010 Appl. Phys. Lett. 97 261908
[8] Safarov V I, Kosobukin V A, Hermann C, Lampel G, Peretti J, Marliere C 1994 Phys. Rev. Lett. 73 3584
[9] Florczak J M, Dahlberg E D 1990 J. Appl. Phys. 67 7520
[10] Tse W K, MacDonald A H 2010 Phys. Rev. Lett. 105 057401
[11] Shimano R, Yumoto G, Yoo J Y, Matsunaga R, Tanabe S, Hibino H, Morimoto T, Aoki H 2013 Nat. Commun. 4 1841
[12] Qiu X D, Zhou X X, Zhang Z Y, Luo H L 2014 Appl. Phys. Lett. 105 131111
[13] Onoda M, Murakami S, Nagaosa N 2004 Appl. Phys. Lett. 93 83901
[14] Hosten O, Kwiat P G 2008 Science 319 787
[15] Onoda M, Murakami S, Nagaosa N 2004 Phys. Rev. Lett. 93 083901
[16] Luo H L, Wen S C, Li Y, Shu W X, Fan D Y 2010 Phys. Rev. A 82 043825
[17] Luo H L, Ling X H, Zhou X X, Shu W X, Wen S C, Fan D Y 2011 Phys. Rev. A 84 033801
[18] Tang M, Zhou X X, Xiao Z C, Luo H L, Wen S C 2013 Chin. Phys. B 22 034101
[19] Li X, Zhou X X, Luo H L 2014 Acta Optica Sinica 34 0731002 (in Chinese) [李星, 周新星, 罗海陆 2014 光学学报 34 0731002]
[20] Lu L, Ji X L, Deng J P, Li X Q 2014 Chin. Phys. B 23 064209
[21] Ren J L, Li Y, Lin Y, Qin Y D, Wu R, Yang J B, Xiao Y F, Yang H, Gong Q H 2012 Appl. Phys. Lett. 101 171103
[22] Ling X H, Yi X N, Zhou X X, Liu Y C, Shu W X, Luo H L, Wen S C 2014 Appl. Phys. Lett. 105 151101
[23] Li Y Q, Wu Z S, Zhang Y Y, Wang M J 2014 Chin. Phys. B 23 074202
[24] Yi X N, Li Y, Liu Y C, Ling X H, Zhang Z Y, Luo H L 2014 Acta Phys. Sin. 63 094203 (in Chinese) [易煦农, 李瑛, 刘亚超, 凌晓辉, 张志友, 罗海陆 2014 物理学报 63 094203]
[25] Liu Y C, Ling X H, Yi X N, Zhou X X, Chen S Z, Ke Y G, Luo H L, Wen S C 2015 Opt. Lett. 40 756
[26] Yang Z J, Scheinfein M R 1993 J. Appl. Phys. 74 6810
[27] You C Y, Shin S C 1998 J. Appl. Phys. 84 541
[28] Luo H L, Zhou X X, Shu W X, Wen S C, Fan D Y 2011 Phys. Rev. A 84 043806
[29] Dressel J, Malik M, Miatto F M, Jordan A N, Boyd R W 2014 Rev. Mod. Phys. 86 307
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