Abstract
In this paper, (001)-oriented hexagonal YMnO3 (h-YMO) thin films with various nominal strain states were deposited on MgO(100), MgO(111), and YSZ(111) substrates by pulsed laser deposition. The in-plane orientation alignment and substrate-induced epitaxial strain between the h-YMO films and substrates are examined by X-ray diffraction (XRD) θ–2θ, Φ, and ω scans. The effects of epitaxial strain on the on-site Mn d–d transition energy E dd (T), and the Néel temperature (T N) in these thin films are investigated by wavelength-tunable ultrafast pump-probe techniques. We find that the changes of E dd (T) and T N depend on the type and magnitude of the epitaxial strain. The possible mechanisms for the observed strain effect on the electronic structure and associated magnetism are discussed.
Similar content being viewed by others
References
Lorenz, B., Wang, Y.Q., Sun, Y.Y., Chu, C.W.: Phys. Rev. B 70, 212412 (2004)
Souchkov, A.B., Simpson, J.R., Quijada, M., Ishibashi, H., Hur, N., Ahn, J.S., Cheong, S.W., Millis, A.J., Drew, H.D.: Phys. Rev. Lett. 91, 027203 (2003)
Choi, W.S., Moon, S.J., Seo, S.S.A., Lee, D., Lee, J.H., Murugavel, P., Noh, T.W.: Phys. Rev. B 78, 054440 (2008)
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.: Nature 451, 805 (2008)
Yeh, N.-C., Fu, C.-C., Wei, J.Y.T., Vasquez, R.P., Huynh, J., Maurer, S.M., Beach, G., Beam, D.A.: J. Appl. Phys. 81, 8 (1997)
Choi, K.J., Biegalski, M., Li, Y.L., Sharan, A., Schubert, J., Uecker, R., Reiche, P., Chen, Y.B., Pan, X.Q., Gopalan, V., Chen, L.-Q., Schlom, D.G., Eom, C.B.: Science 306, 1005 (2004)
Haeni, J.H., Irvin, P., Chang, W., Uecker, R., Reiche, P., Li, Y.L., Choudhury, S., Tian, W., Hawley, M.E., Craigo, B., Tagantsev, A.K., Pan, X.Q., Streiffer, S.K., Chen, L.Q., Kirchoefer, S.W., Levy, J., Schlom, D.G.: Nature (London) 430, 758 (2004)
Singh, A.K., Snure, M., Tiwari, A., Patnaik, S.: J. Appl. Phys. 106, 014109 (2009)
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.: Phys. Rev. B 80, 024427 (2009)
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.: New J. Phys. 13, 053003 (2011)
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.: Europhys. Lett. 94, 27006 (2011)
Sharma, P.A., Ahn, J.S., Hur, N., Park, S., Kim, S.B., Lee, S., Park, J.-G., Guha, S., Cheong, S.-W.: Phys. Rev. Lett. 93, 177202 (2004)
Katsufuji, T., Mori, S., Masaki, M., Moritomo, Y., Yamamoto, N., Takagi, H.: Phys. Rev. B 64, 104419 (2001)
Hsieh, C.C.: Ph.D. dissertation, National Chiao Tung University, Hsinchu, Taiwan, ROC (2008)
Veres, A., Noudem, J.G., Fourrez, S., Bailleul, G.: Solid State Sci. 8, 137 (2006)
Posadas, A., Yau, J.-B., Ahn, C.H.: Phys. Status Solidi (b) 243, 2085 (2006)
Marti, X., Skumryev, V., Ferrater, C., García-Cuenca, M.V., Varela, M., Sánchez, F., Fontcuberta, J.: Appl. Phys. Lett. 96, 222505 (2010)
Acknowledgements
This project is financially sponsored by the National Science Council (grant no. NSC 98-2112-M-009-006-MY3) and the Ministry of Education (2010 MOE ATU program at NCTU) of Taiwan, R.O.C.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wu, K.H., Chen, HJ., Hsieh, C.C. et al. Epitaxial-Strain Effects on Electronic Structure and Magnetic Properties of Hexagonal YMnO3 Thin Films Studied by Femtosecond Spectroscopy. J Supercond Nov Magn 26, 801–807 (2013). https://doi.org/10.1007/s10948-012-2037-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10948-012-2037-8