Few-layer WTe2 shows a quantum-metric-quadrupole-induced third-order nonlinear longitudinal response, supported by angle-, temperature-, and scaling-dependent measurements.
Moreover, when ฮธ = 0ยฐ and 90ยฐ, the longitudinal voltage ratio is equal to ๐11๐๐/๐ฟโฅ 2 and ๐22๐๐/๐ฟโฅ 2, respectively, but the transverse one vanishes
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Giant Third-Order Nonlinearity Induced by the Quantum Metric Quadrupole in Few-Layer WTe2
Few-layer WTe2 shows a quantum-metric-quadrupole-induced third-order nonlinear longitudinal response, supported by angle-, temperature-, and scaling-dependent measurements.