Short-Range Crystalline Order-Tuned Conductivity in Cr2Si2Te6 van der Waals Magnetic Crystals
Source abstract
Abstract
Two-dimensional magnetic materials (2DMMs) are significant not only for studies on the nature of 2D long-range magnetic order but also for future spintronic devices. Of particular interest are 2DMMs where spins can be manipulated by electrical conduction. Whereas Cr2Si2Te6 exhibits magnetic order in few-layer crystals, its large band gap inhibits electronic conduction. Here we show that the defect-induced short-range crystal order in Cr2Si2Te6, on the length scale below 0.6 nm, induces a substantially reduced band gap and robust semiconducting behavior down to 2 K that turns to metallic above 10 GPa. Our results will be helpful in designing conducting states in 2DMMs and call for spin-resolved measurement of the electronic structure in exfoliated ultrathin crystals.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: 2D Materials and Applications · MXene and MAX Phase Materials · Graphene research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
Center for High Pressure Science and Technology Advanced Research, Pudong, Shanghai 201203, China
Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
Materials Science and Chemical Engineering Department, Stony Brook University, Stony Brook, New York 11790, United States
Funding
Basic Energy Sciences
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