Observation of the amplified transverse thermoelectric signals by reduced-dimensionality transport anisotropy.

Reduced-dimensionality transport anisotropy in Li0.9Mo6O17 dramatically amplifies transverse thermoelectric signals, reaching 11,430 μV/K at 25 K and 9 T.

• Why it matters: Understanding how geometrical anisotropy enhances thermoelectric responses addresses a key challenge in developing efficient cryogenic devices with simplified designs, filling a knowledge gap in thermoelectric amplification mechanisms.
• What they did: The study combined theoretical modeling and systematic experiments on quasi-one-dimensional Li0.9Mo6O17, revealing the effects of reduced dimensionality and anisotropy on thermoelectric signals and power factors.
• The result: Findings demonstrate that geometrical anisotropy significantly boosts transverse thermoelectric responses beyond higher-dimensional systems, enabling the design of high-performance thermoelectric devices through anisotropic engineering.