Please wait a minute...
Chin. Phys. B, 2014, Vol. 23(4): 044206    DOI: 10.1088/1674-1056/23/4/044206
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

Gigahertz longitudinal acoustic phonons originating from ultrafast ligand field transitions in hematite thin films

Xu Yuea, Jin Zuan-Minga b, Zhang Zheng-Binga, Zhang Ze-Yua, Lin Xiana, Ma Guo-Honga, Cheng Zhen-Xiangc
a Laboratory of Ultrafast Photonics, Department of Physics, Shanghai University, Shanghai 200444, China;
b Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany;
c Institute for Superconductor and Electronic Materials, University of Wollongong, Squires Way, North Wollongong, NSW 2500, Australia
Abstract  The creation and propagation of longitudinal acoustic phonons (LAPs) in high quality hematite thin films (α-Fe2O3) epitaxially grown on different substrates (BaTiO3, SrTiO3, and LaAlO3) are investigated using the femtosecond pump-probe technique. Transient reflection measurements (ΔR/R) indicate the photo-excited electron dynamics, and the initial decay less than 1 ps and the slow decay of ~ 500 ps are attributed to the electron-LO phonon coupling and electron-hole nonradiative recombination, respectively. LAPs in α-Fe2O3 film can be created by ultrafast excitation of the ligand field state, such as the ligand field transitions under 800-nm excitation as well as the ligand to metal charge-transfer with 400-nm excitation. The strain modulations of the sound velocity and the out-of-plane elastic properties are demonstrated in α-Fe2O3 film on different substrates.
Keywords:  α-Fe2O3      pump-probe technique      acoustic phonons      ligand field  
Received:  12 June 2013      Revised:  11 August 2013      Accepted manuscript online: 
PACS:  42.50.Md (Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency)  
  78.20.hb (Piezo-optical, elasto-optical, acousto-optical, and photoelastic effects)  
  78.47.J- (Ultrafast spectroscopy (<1 psec))  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11174195).
Corresponding Authors:  Ma Guo-Hong, Cheng Zhen-Xiang     E-mail:  ghma@staff.shu.edu.cn;cheng@uow.edu.au
About author:  42.50.Md; 78.20.hb; 78.47.J-

Cite this article: 

Xu Yue, Jin Zuan-Ming, Zhang Zheng-Bing, Zhang Ze-Yu, Lin Xian, Ma Guo-Hong, Cheng Zhen-Xiang Gigahertz longitudinal acoustic phonons originating from ultrafast ligand field transitions in hematite thin films 2014 Chin. Phys. B 23 044206

[1] Armstrong M R, Reed E J, Kim K Y, Glownia J H, Howard W M, Piner E L and Roberts J C 2009 Nat. Phys. 5 285
[2] Akimov A V, Scherbakov A V, Yakovlev D R, Foxon C T and Bayer M 2006 Phys. Rev. Lett. 97 037401
[3] Hase M, Ishioka K, Demsar J, Ushida K and Kitajima M 2005 Phys. Rev. B 71 184301
[4] Hong F, Cheng Z X, Zhao H Y, Kimura H and Wang X L 2011 Appl. Phys. Lett. 99 092502
[5] Xu Y, Jin Z M, Li G F, Zhang Z B, Lin X, Ma G H and Cheng Z X 2012 Acta Phys. Sin. 61 177802 (in Chinese)
[6] Abal G R, Ney O, Satitkovitchai K and Hubner W 2004 Phys. Rev. Lett. 92 227402
[7] Takano M, Nasu S, Abe T, Yamamoto K, Endo S, Takeda Y and Goodenough J B 1991 Phys. Rev. Lett. 67 3267
[8] Yao G X, Lu L H, Gui M F, Zhang X Y, Zheng X F, Ji X H, Zhang H and Cui Z F 2012 Chin. Phys. B 21 107801
[9] Kimel A V, Kirilyuk A, Usachev P A, Pisarev R V, Balbashov A M and Rasing T 2005 Nature 435 655
[10] Jiang Q, Kang Y T and Yao D X 2013 Chin. Phys. B 22 087402
[11] Jin Z M, Xu Y, Zhang Z B, Lin X, Ma G H, Cheng Z X and Wang X L 2012 Appl. Phys. Lett. 101 242902
[12] Wen H D, Chen P, Cosgriff M P, Walko D A, Lee J H, Adamo C, Schaller R D, Ihlefeld J F, Dufresne E M, Schlom D G, Evans P G, Freeland J W and Li Y L 2013 Phys. Rev. Lett. 110 037601
[13] Korff C V S, Bargheer M, Kiel M, Zhavoronkov N, Woerner M, Elsaesser T, Vrejoiu I, Hesse D and Alexe M 2007 Phys. Rev. Lett. 98 257601
[14] Joly A G, Williams J R, Chambers S A, Xiong G, Hess W P and Laman D M 2006 J. Appl. Phys. 99 053521
[15] Jonathan K L and Allen J B 1987 J. Phys. Chem. 91 5076
[16] Cherepy N J, Liston D B, Lovejoy J A, Deng H M and Zhang J Z 1998 J. Phys. Chem. B 102 770
[17] Pendlebury S R, Barroso M, Cowan A J, Sivula K, Tang J, Gratzel M, Klug D and Durrant J R 2011 Chem. Commun. 47 716
[18] Hashimoto T, Yamada T and Yoko T 1996 J. Appl. Phys. 80 3184
[19] Chen T Y, Hsia C H, Son H S and Son D H 2007 J. Am. Chem. Soc. 129 10829
[20] Krasniqi F S, Johnson S L, Beaud P, Kaiser M, Grolimund D and Ingold G 2008 Phys. Rev. B 78 174302
[21] Jin Z M, Ma H, Li D, Wang L H, Ma G H, Guo F and Chen J 2011 Appl. Phys. B 104 59
[22] Aramburu J A, Moreno M, Doclo K, Daul C and Barriuso M T 1999 J. Chem. Phys. 110 1497
[23] Harris D, Loew G H and Komornicki A 1997 J. Phys. Chem. A 101 3959
[24] Sherman D M 1985 Phys. Chem. Miner. 12 161
[25] Thomsen C, Grahn H T, Maris H J and Tauc J 1986 Phys. Rev. B 34 4129
[26] Ruello P, Pezeril T, Avanesyan S, Vaudel G, Gusev V, Infante I C and Dkhil B 2012 Appl. Phys. Lett. 100 212906
[27] Chen P, Lee N, McGill S, Cheong S W and Musfeldt J L 2012 Phys. Rev. B 85 174413
[28] Morin F J 1951 Phys. Rev. 83 1005
[1] Effect of O-O bonds on p-type conductivity in Ag-doped ZnO twin grain boundaries
Jingjing Wu(吴静静), Xin Tang(唐鑫), Fei Long(龙飞), Biyu Tang(唐壁玉). Chin. Phys. B, 2018, 27(5): 057701.
[2] Negative dependence of surface magnetocrystalline anisotropy energy on film thickness in Co33Fe67 alloy
De-Lai Wang(王得来), Ming-Qi Cui(崔明启), Dong-Liang Yang(杨栋亮), Jun-Cai Dong(董俊才), Wei Xu(徐伟). Chin. Phys. B, 2016, 25(10): 107501.
[3] Elastic, dielectric, and piezoelectric characterization of 0.92Pb(Zn1/3Nb2/3)O3-0.08PbTiO3 single crystal by Brillouin scattering
Fang Shao-Xi, Tang Dong-Yun, Chen Zhao-Ming, Zhang Hua, Liu Yu-Long. Chin. Phys. B, 2015, 24(2): 027802.
[4] Determination of temporal structure of femtosecond laser pulses by means of the laser-induced air plasma
Zhang Nan, Bao Wen-Xia, Yang Jing-Hui, Zhu Xiao-Nong. Chin. Phys. B, 2013, 22(5): 054209.
No Suggested Reading articles found!