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Photoinduced carrier dynamic behavior of the Mn3+ 3d resonance excitation of YMnO3 thin film is studied by the femtosecond time resolved spectroscopy. The photon energy of the pump pulse is tuned to 1.70 eV, which is corresponding to the Mn3+ 3d energy level at room temperature. With resonant excitation, the transient transmission signals at the zero-delay time gradually increase with temperature increasing. The temperature dependent transmission change results from the blue shift of the Mn3+ 3d energy level, which is believed to originate from the short-range antiferromagnetic order in YMnO3 film. In addition, the fast and slow relaxations of the transient signal arise from electronic-phonon and phonon-spin interactions, respectively. When the temperature is lower than TN, the relaxation time of the fast process increases significantly, which indicates that the strength of electronic-phonon coupling is restrained by the long-range antiferromagnetic order.
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[1] Lottermoser A T, Lonkai T, Amann U, Hohlwein D, Ihringer J, Fiebig M 2004 Nature 430 541
[2] Cheong S W, Mostovoy M 2007 Nat. Mater. 6 13
[3] Kimura T, Goto T, Shintani H, Ishizaka K, Arima T, Tokura Y 2003 Nature 426 55
[4] Astrove N 1960 Sov. Phys. JETP 11 708
[5] Spaldin N A, Fiebig M 2005 Science 309 391
[6] Nan C W, Bichurin M I, Dong S X, Viehland D, Srinivasan G 2008 J. Appl. Phys. 103 03110
[7] Yen F, Cruz C R, Lorenz B, Sun Y Y, Wang Y Q, Gospodinov M M, Chu C W 2005 Phys. Rev. B 71 180407
[8] Chen Y H, Wang Y, Zuo F Y, Lai T S, Wu Y Q 2009 Acta Phys. Sin. 58 3548 (in Chinese) [陈宇辉, 王阳, 左方圆, 赖天树, 吴谊群 2009 58 3548]
[9] Wang W F, Chen K, Wu J D, Wen J H, Lai T S 2011 Acta Phys. Sin. 60 117802 (in Chinese) [王文芳, 陈科, 邬静达, 文锦辉, 赖天树 2011 60 117802]
[10] Jin Z M, Guo F Y, Ma H, Wang L H, Ma G H, Chen J Z 2011 Acta Phys. Sin. 60 087803 (in Chinese) [金钻明, 郭飞云, 马红, 王立华, 马国宏, 陈建中 2011 60 087803]
[11] Shih H C, Chen L Y, Luo C W, Wu K H, Lin J Y, Juang J Y, Uen T M, Lee J M, Chen J M, Kobayashi T 2011 New Journal of Physics 13 0530
[12] Lim D, Averitt R D, Demsar J, Taylor A J 2003 Appl.Phys. Lett. 83 4800
[13] Jang K J, Lee H, Lee S, Ahn J, Ahn J S, Hur N, Cheong S 2010 Appl. Phys. Lett. 97 031914
[14] Jin Z M, Ma H, Li G F, Xu Y, Ma G H, Cheng Z X 2012 Appl. Phys. Lett. 100 021106
[15] Wu K H, Chen H J, Chen Y T, Hsieh C C, Luo C W, Uen T M, Juang J Y, Lin J Y, Kobayashi T, Gospodinov M 2011 Eur. Phys. Lett. 94 27006
[16] Cai C F 2007 M. S. Dissertation (Taiwan: National Chiao Tung University) (in Chinese) [蔡财福 2007 硕士学位论文(台湾:国立交通大学)]
[17] Rai R C, Cao J, Musfeldt J L, Kim S B, Cheong S W, Wei X 2007 Phys. Rev. B 75 184414
[18] Choi W S, Kim D G, Seok S, Seo S S A, Moon S J, Lee D, Lee J H, Lee H S, Cho D Y, Lee Y S, Murugavel P, Yu J, Noh T W 2008 Phys. Rev. B 77 045137
[19] Souchkov A B, Simpson J R, Quijada M, Ishibashi H, Hur N, Ahn J S, Cheong S W, Millis A J, Drew H D 2003 Phys. Rev. Lett. 91 027203
[20] Choi W S, Moon S J, Seo S S A, Lee D, Lee J H 2008 Phys. Rev. B 78 054440
[21] Lee S, Pirogov A, Kang M, Jang K H, Yonemura M, Kamiyama T, Cheong S W, Gozzo F, Shin N, Kimura H, Noda Y, Park J G 2008 Nature 451 805
[22] Katsufuji T, Mori S, Masaki M, Moritomo Y, Yamamoto N, Takagi H 2001 Phys. Rev. B 64 104419
[23] Shih H C, Lin T H, Luo C W, Lin J Y, Uen T M, Juang J Y, Wu K H, Lee J M, Chen J M, Kobayashi T 2009 Phys. Rev. B 80 024427
[24] Lobad A I, Averitt R D, Kwon C, Taylor A J 2000 App. Phys. Lett. 77 24
[25] Kimel A V, Kirilyuk A, Tsevetkov A, Pisarev R V, Rasing T 2004 Nature 429 850
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