Preferences help
enabled [disable] Abstract
Number of results
2012 | 121 | 2 | 336-339
Article title

Bond-Selective Excitation and Following Displacement of Ge Atoms in GeTe/Sb_{2}Te_{3} Superlattice

Title variants
Languages of publication
Phase change random access memory devices made from chalcogenides compounds, such as Ge_{2}Sb_{2}Te_{5}, have attracted much attention because of their high-speed read-write and low power consumption capabilities. The phase change in Ge_{2}Sb_{2}Te_{5} is thought to be characterized by the displacement of Ge atoms, accompanying relaxation of surrounding Sb and Te atoms. Here we examine a new approach, that is the manipulation of Ge-Te bonds using linearly-polarized femtosecond near-infrared optical pulses. As a result, p-polarized pump pulses are found to be more effective in inducing the precursor of phase change, probably due to the atomic arrangements along the unique axis of the superlattice structure.
Physical description
  • [1] M. Wuttig, N. Yamada, Nat. Mat. 6, 824 (2007)
  • [2] L. Pauling, Nature of Chemical Bond, Cornell Univ. Press, New York 1939
  • [3] K. Shportko, S. Kremers, M. Woda, D. Lencer, J. Robertson, M. Wuttig, Nat. Mat. 7, 653 (2008)
  • [4] A.V. Kolobov, M. Krbal, P. Fons, J. Tominaga, T. Uruga, Nat. Chem. 3, 311 (2011)
  • [5] P. Fons, H. Osawa, A.V. Kolobov, T. Fukaya, M. Suzuki, T. Uruga, N. Kawamura, H. Tanida, J. Tominaga, Phys. Rev. B 82, 041203 (2010)
  • [6] M. Konishi, H. Santo, Y. Hongo, K. Tajima, M. Hosoi, T. Saiki, Appl. Opt. 49, 3470 (2010)
  • [7] K. Makino, J. Tominaga, M. Hase, Opt. Exp. 19, 1260 (2011)
  • [8] T. Pfeifer, W. Kütt, H. Kurz, R. Schölz, Phys. Rev. Lett. 69, 3248 (1992)
  • [9] T.C. Chong, L.P. Shi, R. Zhao, P.K. Tan, J.M. Li, K. Lee, X.S. Miao, A.Y. Du, C.H. Tung, Appl. Phys. Lett. 88, 122114 (2006)
  • [10] J. Tominaga, P. Fons, A.V. Kolobov, T. Shima, T.C. Chong, R. Zhao, H.K. Lee, L.P. Shi, Jpn. J. Appl. Phys. 47, 5763 (2008)
  • [11] A.V. Kolobov, P. Fons, A.I. Frenkel, A.L. Ankudinov, J. Tominaga, T. Uruga, Nat. Mat. 3, 703 (2004)
  • [12] T.P. Devereaux, T. Cuk, Z.-X. Shen, N. Nagaosa, Phys. Rev. Lett. 93, 117004 (2004)
  • [13] F. Carbone, D.-S. Yang, E. Giannini, A.H. Zewail, Proc. Natl. Acad. Sci. 105, 20161 (2008)
  • [14] M. Hase, M. Kitajima, S.I. Nakashima, K. Mizoguchi, Phys. Rev. Lett. 88, 067401 (2002)
  • [15] M. Hase, M. Kitajima, S. Nakashima, K. Mizoguchi, Appl. Phys. Lett. 83, 4921 (2003)
  • [16] R. Lu, M. Hase, M. Kitajima, S. Nakashima, S. Sugai, Phys. Rev. B 75, 012107 (2007)
  • [17] A. Cavalleri, T. Dekorsy, H.H.W. Chong, J.C. Kieffer, R.W. Schoenlein, Phys. Rev. B 70, 161102(R) (2004)
  • [18] C. Kubler, H. Ehrke, R. Huber, R. Lopez, A. Halabica, R.F. Haglund, Jr., A. Leitenstorfer, Phys. Rev. Lett. 99, 116401 (2007)
  • [19] M. Först, T. Dekorsy, C. Trappe, M. Laurenzis, H. Kurz, B. Bechevet, Appl. Phys. Lett. 77, 1964 (2000)
  • [20] M. Hase, Y. Miyamoto, J. Tominaga, Phys. Rev. B 79, 174112 (2009)
  • [21] G.A. Garrett, T.F. Albrecht, J.F. Whitaker, R. Merlin, Phys. Rev. Lett. 77, 3661 (1996)
Document Type
Publication order reference
YADDA identifier
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.