Materials science

Science Behind the Fiction, Special Edition: Back to the Future Part II [1989]October 21, 2015

Science Behind the Fiction critiques the science and engineering portrayed in popular films and literature. In honor of reaching the “future” of Back to the Future Part II, we’re taking a look at the technology its creators predicted for 2015.

Pure Spin Current and Spin Hall Effect in Lateral Structures

Spintronics, a frontier academic research area, is advancing rapidly in recent years. It employs both spin and charge degrees of freedom of electrons to store and process information. To achieve this, it is extremely important to understand the generation, transport, and detection of the spin current. In this work we use a mesoscopic metallic spintronic structure-nonlocal spin valve (NLSV) - for fundamental studies of spintronics.

Exploring the Promise of Diffusion Monte Carlo for Materials Research

Electronic structure calculations based on Density Functional Theory (DFT) play an increasingly important role in the development and characterization of materials. However, efforts to calculate properties of materials of interest commonly expose the accuracy limitations of current DFT approximations.

Designing and Tuning Magnetic Resonance with Exchange Interaction

Magnetic resonance is one of the key properties of magnetic materials for applications in information storage and processing, magnetic sensors, and microwave devices. The conventional method of tuning magnetic resonance with an electromagnet is not desirable in terms of size, energy consumption, and frequency tunable range. Research efforts have been made to realize electric voltage control of magnetic resonance by utilizing the magnetoelastic effect in multiferroic (piezoelectric/ferromagnetic) heterostructures.

Scientists gain insight into origin of tungsten ditelluride's magnetoresistanceOctober 19, 2015

Two new significant findings may move scientists closer to understanding the origins of tungsten ditelluride's extremely large magnetoresistance, a key characteristic in modern electronic devices such as magnetic hard drives and sensors.