Dielectric nonlinearity and stochastic effects in strontium titanate
作者： Alp T. Findikoğlu , Roberto Camassa , Grant Lythe , Q. X. Jia
DOI: 10.1063/1.1477278
关键词: Permittivity 、 DC bias 、 Coplanar waveguide 、 Dielectric loss 、 Dielectric 、 Condensed matter physics 、 Strontium titanate 、 Electric field 、 Orders of magnitude (temperature) 、 Materials science
摘要: We report on experiments using compact coplanar waveguide devices, incorporating thin-film superconducting YBa2Cu3O7 electrodes. The substrate is strontium titanate, whose nonlinear dielectric properties are dependent temperature and applied electric field. Close to zero dc bias, the frequency-doubled microwave power output increases by several orders of magnitude with modest broadband noise input. Experimental results supported analytical numerical calculations based a wave equation.
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