Emission of continuous terahertz waves by high Tc superconductors

Iizuka, Mikio; Minami, Kazuo; Tejima, Syogo; Nakamura, Hisashi

doi:10.1016/j.physc.2005.02.027

Cited by 3 publications

(7 citation statements)

References 7 publications

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“…Such positive feedback can result in relatively strong radiation with well pronounced maxima in the spectra. All our analytical estimates are in a good agreement with numerical data 6,7 .…”

Section: Discussionsupporting

confidence: 83%

“…It has been experimentally observed [1][2][3] and confirmed both analytically 4,5 and numerically 6,7 that moving Josephson vortices (JVs) emit sub-THz electromagnetic radiation. Tera-Hertz radiation has applications in physics, astronomy, chemistry, biology, and medicine 9 .…”

Section: Introductionmentioning

confidence: 65%

“…6 and one in Ref. 7, are shown for different J/J c ; from there we read out the corresponding resonance wavelengths λ r .…”

Section: Comparison With Numerical Resultsmentioning

confidence: 99%

“…All our analytical estimates are in a good agreement with numerical data. 6,7 The experimental demonstration 3 of terahertz radiation in zero magnetic field and various failed attempts at detecting terahertz emission in the presence of magnetic fields cast serious doubts on the initial idea that moving JVs can radiate in this frequency domain. Indeed, the now prevailing interpretation is that JVs ought to be considered as perturbing degrees of freedom, which destroy the layer coherence and thus cause the suppression of terahertz radiation.…”

Section: Discussionmentioning

confidence: 99%

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Model of coherent emission from disordered arrays of driven Josephson vortices

2010

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We propose a mechanism of coherent emission from driven vortices in stacked intrinsic Josephson junctions. In contrast to super-radiance, which occurs only for highly ordered vortex lattices, we predict resonant radiation emission from weakly correlated vortex arrays. Our analytical results for the terahertz wave intensity, resonance frequencies, and the dependence of terahertz emission power on dissipation are in good agreement with the ones obtained by recent simulations.

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“…Such positive feedback can result in relatively strong radiation with well pronounced maxima in the spectra. All our analytical estimates are in a good agreement with numerical data 6,7 .…”

Section: Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 65%

“…6 and one in Ref. 7, are shown for different J/J c ; from there we read out the corresponding resonance wavelengths λ r .…”

Section: Comparison With Numerical Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Model of coherent emission from disordered arrays of driven Josephson vortices

2010

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“…The simulation results of Bi 2 Sr 2 CaCu 2 O 8+δ (Bi-2212) have shown that when an external current is applied to the sample, the voltage due to the fluxon flow in the system excites the Josephson plasma with terahertz frequency [16,17]. The frequency of the electromagnetic waves emitted at any bias voltage in the fluxon flow regime of the junctions gets increasing attention due to the coherent, continuous and tunable character [14].…”

Section: Theoreticalmentioning

confidence: 99%

Terahertz oscillations in mercury cuprate superconductors

Özdemir

Aslan²,

Onbaşlı

2009

Pramana - J Phys

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It has been recently reported that the three-dimensional Bose-Einstein condensation of the quasi-particles is valid for the mercury cuprates at liquid helium temperature. In this study, the validity of the interlayer theory in three dimensions has been investigated for optimally oxygen-doped mercury cuprates at the temperature interval of 0-15 K. Furthermore, some thermodynamic and electrodynamics parameters of mercury cuprates have been calculated for both the under-doped and the over-doped samples at the vicinity of 4.2 K. Moreover, it has been determined that the superconducting system behaves as a terahertz wave cavity regardless of the oxygen doping concentration.

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Origin of flux-flow resistance oscillations inBi2Sr2CaCu2O8+y

Ustinov

Pedersen

2005

Phys. Rev. B

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We propose an alternative explanation to the oscillations of the flux-flow resistance found in several previously published experiments with Bi2Sr2CaCu2O8+y stacks. It has been argued by the previous authors that the period of the oscillations corresponding to the field needed to add one vortex per two intrinsic Josephson junctions is associated with a moving triangular lattice of vortices (out-of-phase mode), while the period corresponding to one vortex per one junction is due to the square lattice (in-phase mode). In contrast, we show that both type of oscillations may occur in a single-layer Josephson junction and thus the above interpretation is inconsistent.

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Emission of continuous terahertz waves by high Tc superconductors

Cited by 3 publications

References 7 publications

Model of coherent emission from disordered arrays of driven Josephson vortices

Model of coherent emission from disordered arrays of driven Josephson vortices

Terahertz oscillations in mercury cuprate superconductors

Origin of flux-flow resistance oscillations inBi2Sr2CaCu2O8+y

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