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We introduce a class of low-loss subwavelength resonators and report the first demonstration of a high-temperature ( $T_{c}$) superconducting Bi$_{2}$Sr$_{2}$ CaCu$_{2}$O $_{8+\delta }$ (BSCCO) terahertz (THz) metamaterial. The numerical simulations and analytical calculations are performed to study the electromagnetic response of the subwavelength BSCCO split-ring resonators (SRRs) to the incident...
The influence of electrode position on the current-voltage characteristics (IVC) and broadly tunable terahertz (THz) radiation emitted from two pentagonal mesa structures consisting of the intrinsic Josephson junctions in a high-Tc superconducting device is investigated.
We present a superconducting metamaterial with ultra-strong nonlinear response in the sub-terahertz range. A change in transmission of more than 10% has been achieved by ramping up the radiation intensity from 100µW/cm2 to just 800µW/cm2.
We demonstrate the first superconducting metamaterial that can exhibit a profound toroidal dipolar resonance. Quantum behaviour of the superconductor and toroidal excitation of the metamaterial are both necessary prerequisites for observing the time-dependent Aharonov-Bohm effect.
In 2007 [1], we have succeeded in observing strong, coherent, and continuous THz emission from a mesa of Bi2Sr2CaCu2O8+s single crystal with a rectangular dimension of a few hundred micrometers in length, several tens of micrometers in width, and a few micrometers in thickness. Since then, great progress has been made both in understanding the fundamental mechanism of the radiation [2-6] and in practical...
Tunable terahertz (THz) radiation emitted from the triangular mesa structures consisting of the intrinsic Josephson junctions in single-crystalline high-Tc superconducting Bi2Sr2CaCu2O8+δ is investigated using angular distribution measurements of the radiation power and Fourier transform infrared spectroscopy.
We report on intense, tunable, continuous, and coherent THz electromagnetic waves observed from differently shaped triangular mesas of the intrinsic Josephson junctions in single crystalline high-Tc superconducting Bi2Sr2CaCu2O8+δ. All samples are fabricated by focused ion beam milling.
An example of strong radiation power of THz emission from the mesas fabricated from Bi2Sr2CaCu2O8+δ high-Tc superconductor intrinsic Josephson junctions is given together with the effective model in which an effective LRC-values are considered as adjustable parameters to maximize the radiation power emitted.
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