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Master Thesis – Characterization of Irreversible Processes in Valence Change Memory (VCM) Cells on a Sub-Nanosecond Time Scale in der Städteregion Aachen
Referenznummer: acjobs-st-151994

Forschungszentrum Jülich GmbH - Studentenjob
Start ab sofort - Online seit dem 19.07.2022


Job-Zusammenfassung

Conducting research for a changing society: This is what drives us at Forschungs­zentrum Jülich. As a member of the Helmholtz Association, we aim to tackle the grand societal challenges of our timeconduct researchthe possibilities of a digitized society, a climate-friendly energy system,a resource-efficient economy. Work together with around 7,100 employees in one of Europe’s biggest research centreshelp us to shape change! Memristive devices constitute an emerging memory technology that can be programmed in different resistance states. They cannot only be used as binary memory, but also for securityneuromorphic applications. The Institute of Electronic Materials (IWE2) of the RWTH Aachen Universitythe Peter Grünberg Institute – Electronic Materials (PGI-7) – have a unique radio frequency (RF) setup, with which the writing times of memory devices can be measured at time scales down to 50 ps, which is the fastest writing time reported for memristive devices. Now, this setup will be used to test neuromorphic applications on memristive devices in the GHz regime. We are offering a Master Thesis – Characterization of Irreversible Processes in Valence Change Memory (VCM) Cells on a Sub-Nanosecond Time ScaleThe use of bipolar memory devices to achieve synaptic connectivity in neural networks is highly dependent on the ability of the devices to perform analog conductance modulation using electrical stimuli in the form of identical voltage pulses. Typically, the filamentary components of the valence change memory (VCM) type exhibit abruptswitching behaviorgradual RESET switching behavior. Therefore, obtaining an analog modulation of the conductance duringand RESET is a challenge. In order to achieve analog writing modes with ultra-short pulses, using a bias tee, we can simultaneously apply a series of ultra-short pulses (ps)a continuous read voltage. So one can measure the resistance changes while applying pulse trains. The aim of the thesis is to

Characterize irreversible processes (such as ion migration), investigate analogue modes of operation
Realize STP / LTP by gradual stepwise switching events in resistive switching valence change memory (VCM)
Track the change of resistance upon application of ultra-short pulses in order to generate a linear relationshipthe change in resistancethe number of pulses
Electrical characterization on our ultra-fast RF setup, using bias tee, SMU, pulse generator,oscilloscope
Control measurementsevaluate data via Python code

Master’s student in physics, computer science, electrical engineering, materials science,in a similar field
Basic programming skills (ideally in Python)
Interest in experimentalmultidisciplinary work
High motivation as well as self-directed learningworking
Proficient English skills, basic German skills are of advantage
We work on the very latest issues that impact our societyare offering you the chance to actively help in shaping the change! We support you in your work with:

A world-leading, interdisciplinary,international research environment, provided with state-of-the-art experimental equipmentversatile opportunities to grow as a curious researcher
Collaborative work environment including researchers at the following institutes: Peter Grünberg Institute – Electronic Materials (PGI-7) –the Institute of Electronic Materials (IWE2) at RWTH Aachen University
An interestingsocially relevant topic for your thesis with future-oriented themes
Ideal conditions for gaining practical experience alongside your studies
Qualified support through your scientific colleagues
The chance to independently preparework on your tasks
Flexible work (location) arrangements, e.g. remote work
Flexible working hours as well as a reasonable remuneration
Targeted services for international employees, e.g. through our International Advisory Service
Place of employment: Jülich / Aachen The position is initially fixed for twelve months.

Bitte geben Sie bei Ihrer Bewerbung die Referenznummer acjobs-st-151994an.


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