Embedded Systems Conference
Breaking News
Newest First | Oldest First | Threaded View
User Rank
re: Tech Beat: Nano-structures promise power-sipping PCM
resistion   3/22/2013 8:47:17 AM
A big problem with this is reducing the contact area increases the voltage from larger contact resistance. Also, isn't it standard practice to have design one self-assembled contact hole inside the TiN contact?

User Rank
re: Tech Beat: Nano-structures promise power-sipping PCM
green_is_now   3/22/2013 2:25:37 AM
This will also lower contact area

User Rank
re: Tech Beat: Nano-structures promise power-sipping PCM
green_is_now   3/22/2013 2:25:07 AM
Why not etch away area instead or in combination with this technque?

R G.Neale
User Rank
re: Tech Beat: Nano-structures promise power-sipping PCM
R G.Neale   3/20/2013 1:23:25 PM
A correction and an apology. My quote of current densities of the order 10E8 amps/sq-cm reproduced above was based on my estimate for a sub 20nm device and the reading of a less than clear version of the original paper. I have been in contact with the authors who have drawn my attention to the supplementary information provided with their paper. From their simulation of a 50 x 50 nm device the current density without the oxide balls is 1.8 x 10E7 A/sq-cm; which is in good agreement with similar sized devices reported elsewhere. More importantly, and again from their simulation, with the oxide balls covering 50% of the area between the GST-TiN heater interface the authors estimate a reset current density of 2.8 x10E6 A/sq-cm. A value that betters by about an order of magnitude any reported so far by any other PCM workers for devices of similar dimensions. Assuming those operating conditions produce reliable overall performance especially with respect to elevated temperature data retention and write/erase lifetime the KAIST paper might mark a significant step forward in PCM development. The next, and non-trivial step, is reduction to practice with real devices and then to put PCM back into a competitive position, devices scaled to sub 20nm dimensions. For PCM the curve of reset current density J = f(dimensions) follow the general form of those for the ratio of surface area to volume. This would suggest that sub 20nm PCM devices without the oxide balls would have current densities close to 1x10E8 amps and given a similar gain reported above with the inclusion of the balls would result in a device with a reset current density of the order 1 x10E7 A/sq-cm. Much depends on the minimum possible diameter balls and the ability to reproduce very small diameter oxide balls in sub 20nm apertures. A significant challenge remains.

IoT Network Shoot Out
July 16, 1pm EDT Thursday

Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.

Brought to you by

Flash Poll
Top Comments of the Week
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Special Video Section
Chwan-Jye Foo (C.J Foo), product marketing manager for ...
The LT®3752/LT3752-1 are current mode PWM controllers ...
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.