Segregation-induced Ge precipitation in Ge2Sb2Te5 and N-doped Ge2Sb2Te5 line cells

Compositionally matched nitrogen-doped Ge2Sb2Te5/Ge2Sb2Te5 superlattice-like structures for phase change random access memory

superlattice-like structures for phase change random access memory Chun Chia Tan, Luping Shi, Rong Zhao, Qiang Guo, Yi Li, Yi Yang, Tow Chong Chong, Jonathan A. Malen, Wee-Liat Ong, Tuviah E. Schlesinger, and James A. Bain Data Storage Institute, A*STAR (Agency for Science, Technology and Research), DSI Building, 5 Engineering Drive 1, Singapore 117608 Department of Electrical and Computer Engi...

Phase change behaviors of Zn-doped Ge2Sb2Te5 films

Enhanced amorphous stability of carbon-doped Ge2Sb2Te5: Ab Initio investigation

The effects of carbon doping on structural and electronic properties of amorphous Ge2Sb2Te5 are studied by using ab initio molecular dynamics simulations. In comparison with Si, N, and O dopants, C dopants are found to fundamentally alter the local order of amorphous network by increasing the population of tetrahedral Ge atoms significantly. In addition, the density of ABAB-type squared rings i...

Local order in amorphous Ge2Sb2Te5 and GeSb2Te4

P. Jóvári,1 I. Kaban,2 J. Steiner,3 B. Beuneu,4 A. Schöps,5 and M. A. Webb5 1Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, P.O. Box 49, Budapest H-1525, Hungary 2Institute of Physics, Chemnitz University of Technology, D-09107 Chemnitz, Germany 3I. Physikalisches Institut, RWTH Aachen, Physik neuer Materialien, 52056 Aachen, Germany 4Laboratoire Léon Bril...

Local Bonding Arrangements in Amorphous Ge2Sb2Te5: The Importance of GE and TE Bonding

Studies of amorphous (a-) semiconductors have been driven by technological advances as well as fundamental theories. Observation of electrical switching [1], for example, fueled early interest in achalcogenides. More recently a-chalcogenide switching has been applied successfully to programmable memory devices [2], as well as DVD technology where the quest for the discovery of better-suited mat...