Impact of thermoelectric phenomena on phase-change memory performance metrics and scaling.

نویسندگان

  • Jaeho Lee
  • Mehdi Asheghi
  • Kenneth E Goodson
چکیده

The coupled transport of heat and electrical current, or thermoelectric phenomena, can strongly influence the temperature distribution and figures of merit for phase-change memory (PCM). This paper simulates PCM devices with careful attention to thermoelectric transport and the resulting impact on programming current during the reset operation. The electrothermal simulations consider Thomson heating within the phase-change material and Peltier heating at the electrode interface. Using representative values for the Thomson and Seebeck coefficients extracted from our past measurements of these properties, we predict a cell temperature increase of 44% and a decrease in the programming current of 16%. Scaling arguments indicate that the impact of thermoelectric phenomena becomes greater with smaller dimensions due to enhanced thermal confinement. This work estimates the scaling of this reduction in programming current as electrode contact areas are reduced down to 10 nm × 10 nm. Precise understanding of thermoelectric phenomena and their impact on device performance is a critical part of PCM design strategies.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Thermal Transport in Phase Change Memory Materials

Phase change memory uses brief pulses of electrical current to induce phase transitions in chalcogenide material regions with dimensions near or even far below 50 nm. The strongly differing electrical conductivities of the crystalline and amorphous phases allow data storage at densities in excess of terabits per square inch. Nanoscale conduction heat transfer governs the figures of merit in the...

متن کامل

Investigating the Impact of Organizational Learning and Marketing Metrics on the Performance of Marketing (Case Study: Elon Plast Company)

The aim of this study was to analyze the impact of organizational learning and marketing metrics on the marketing performance in the Elon Plast Company of Kermanshah province. It is a functional purpose study with descriptive – survey method. The statistical population includes 100 employees of Elon Plast Company in Kermanshah province. A sample of 80 people was chosen using Cochran formula. Da...

متن کامل

L2 Learners’ Strategy Preference in Metaphorical Test Performance: Effects of Working Memory and Cognitive Style

Although investigating the factors that influence test scores is important, a majority of stakeholders show a paucity of attention towards individual learner differences due to having large classes of L2 learners. This study sought to explore the possible effect of working memory and cognitive style on L2 learners’ metaphorical test performance. The study was conducted in 2 phases. The first ph...

متن کامل

Nanometer-scale temperature imaging for independent observation of Joule and Peltier effects in phase change memory devices.

This paper reports a technique for independent observation of nanometer-scale Joule heating and thermoelectric effects, using atomic force microscopy (AFM) based measurements of nanometer-scale temperature fields. When electrical current flows through nanoscale devices and contacts the temperature distribution is governed by both Joule and thermoelectric effects. When the device is driven by an...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Nanotechnology

دوره 23 20  شماره 

صفحات  -

تاریخ انتشار 2012