A three-terminal non-volatile ferroelectric switch with an insulator-metal transition channel.

Ferroelectrics offer a promising material platform to realize energy-efficient non-volatile memory technology with the FeFET-based implementations being one of the most area-efficient ferroelectric memory architectures. However, the FeFET operation entails a fundamental trade-off between the read and the program operations. To overcome this trade-off, we propose in this work, a novel device concept, Mott-FeFET, that aims to replace the Silicon channel of the FeFET with VO- a material that exhibits an electrically driven insulator-metal phase transition.

Creating electronic oscillator-based Ising machines without external injection locking.

Coupled electronic oscillators have recently been explored as a compact, integrated circuit- and room temperature operation-compatible hardware platform to design Ising machines. However, such implementations presently require the injection of an externally generated second-harmonic signal to impose the phase bipartition among the oscillators. In this work, we experimentally demonstrate a new electronic autaptic oscillator (EAO) that uses engineered feedback to eliminate the need for the generation and injection of the external second harmonic signal to minimize the Ising Hamiltonian.

Using noise to augment synchronization among oscillators.

Noise is expected to play an important role in the dynamics of analog systems such as coupled oscillators which have recently been explored as a hardware platform for application in computing. In this work, we experimentally investigate the effect of noise on the synchronization of relaxation oscillators and their computational properties. Specifically, in contrast to its typically expected adverse effect, we first demonstrate that a common white noise input induces frequency locking among uncoupled oscillators.

On-Demand Local Modification of High-T Superconductivity in Few Unit-Cell Thick Bi Sr CaCu O.

High-temperature superconductors (HTSs) are important for potential applications and for understanding the origin of strong correlations. Bi Sr CaCu O (BSCCO), a van der Waals material, offers a platform to probe the physics down to a unit-cell. Guiding the flow of electrons by patterning 2DEGS and oxide heterostructures has brought new functionality and access to new science.

Growth of high-quality BiSr CaCuO whiskers and electrical properties of resulting exfoliated flakes.

In this work, we demonstrate a simple technique to grow high-quality whiskers of Bi Sr CaCu O - a high T superconductor. Structural analysis shows the single-crystalline nature of the grown whiskers. To probe electrical properties, we exfoliate these whiskers into thin flakes (~50 nm thick) using the scotch-tape technique and develop a process to realize good electrical contacts.