4.1.3 Crystallization of Conduction Path in a-TaO x Based Resistive
Switch
Even though the Ta-rich region in CF of a-TaO x -based resistive switch had been
identified in experiment, its atomic detail was still unknown due to the experimental
limitations. Therefore we examined the structure of CF (a-TaO 0.75 ) on atomic level
from theoretical point of view [7]. As shown in Fig. 17, the atomic arrangement in
0.000
0.030
0.006
0.012
0.018
0.024
TaO0.75
LRS
(b)
TaO2.25
HRS
(a)
0.000
0.030
0.006
0.012
0.018
0.024
Fig. 16 Structure and local density of states near the Fermi level of a-TaO 2.25 and a-TaO 0.75 ,
respectively. Adapted from Ref. [7] with permission from The Royal Society of Chemistry
116
S. Watanabe and B. Xiao
Switch
Even though the Ta-rich region in CF of a-TaO x -based resistive switch had been
identified in experiment, its atomic detail was still unknown due to the experimental
limitations. Therefore we examined the structure of CF (a-TaO 0.75 ) on atomic level
from theoretical point of view [7]. As shown in Fig. 17, the atomic arrangement in
0.000
0.030
0.006
0.012
0.018
0.024
TaO0.75
LRS
(b)
TaO2.25
HRS
(a)
0.000
0.030
0.006
0.012
0.018
0.024
Fig. 16 Structure and local density of states near the Fermi level of a-TaO 2.25 and a-TaO 0.75 ,
respectively. Adapted from Ref. [7] with permission from The Royal Society of Chemistry
116
S. Watanabe and B. Xiao