Two-dimensional TaSe2 metallic crystals: spin-orbit scattering length and breakdown current density.

Area of Science:

• Condensed Matter Physics
• Materials Science
• Spintronics

Background:

• Strong spin-orbit coupling is crucial for spintronic applications.
• Two-dimensional materials offer unique electronic properties.
• Understanding spin-orbit scattering is key to device design.

Purpose of the Study:

• To determine the spin-orbit scattering length of 2H-TaSe2.
• To evaluate the potential of 2H-TaSe2 for spin Hall effect and spin-torque devices.
• To characterize the breakdown current density of 2H-TaSe2.

Main Methods:

• Characterization of weak antilocalization phenomena.
• Fitting magneto-conductivity data.
• Measurement of room temperature breakdown current density.

Main Results:

• The spin-orbit scattering length of 2H-TaSe2 was determined to be 17 nm.
• This scattering length is comparable to platinum, a material commonly used for spin Hall effect studies.
• A high breakdown current density of 3.7 × 10^7 A/cm^2 was measured at room temperature.

Conclusions:

• 2H-TaSe2 exhibits strong spin-orbit interaction suitable for spintronic applications.
• Its properties indicate potential for use in spin Hall effect and spin-torque devices.
• The material's high current carrying capacity also suggests suitability for 2D device interconnects.