Holographic p-wave superconductor with $$C^2F^2$$ correction

Lu, Jun-Wang; Wu, Yabo; Dong, Bao-Ping

doi:10.1140/epjc/s10052-020-7645-z

“…It followed that unlike the case for the six order derivative term C 2 F 2 in Refs. [35,63,64], we observed neither the Drudelike peak near the zero-frequency nor the pronounced peak at the intermediate frequency.…”

Section: Conclusion and Discussioncontrasting

confidence: 68%

“…[61], the authors in Refs. [62][63][64] constructed the s-wave and MCV p-wave conductor/superconductor phase transition models via the numerical and analytical methods, respectively, and found that the increasing six derivative correction enhances the superconductor phase transition.…”

Section: Introductionmentioning

confidence: 99%

Holographic Lifshitz superconductors with Weyl correction

Lu

¹

,

Wu

²

,

Dong

³

et al. 2020

Self Cite

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At the probe approximation, we construct a holographic p-wave conductor/superconductor model in the five-dimensional Lifshitz black hole with the Weyl correction via both numerical and analytical methods, and study the effects of the Lifshitz parameter z as well as the Weyl parameter $$\gamma $$ γ on the superconductor model. As we take into account one of the two corrections separately, the increasing z ($$\gamma $$ γ ) inhibits(enhances) the superconductor phase transition. When the two corrections are considered comprehensively, they display the obviously competitive effects on both the critical temperature and the vector condensate. In particular, the promoting effects of the Weyl parameter $$\gamma $$ γ on the critical temperature are obviously suppressed by the increasing Lifshitz parameter. Meanwhile, in the case of $$z<2.35$$ z < 2.35 ($$z>2.35$$ z > 2.35 ), the condensate at lower temperature decreases(increases) with the increasing Weyl parameter $$\gamma $$ γ . What is more, the difference among the condensate with the fixed Weyl parameter($$\gamma =-\frac{6}{100},0,\frac{4}{100}$$ γ = - 6 100 , 0 , 4 100 ) decreases(increases) with the increasing Lifshitz parameter z in the region $$z<2.35$$ z < 2.35 ($$z>2.35$$ z > 2.35 ). Furthermore, the increasing z obviously suppresses the real part of conductivity for all value of the Weyl parameter $$\gamma $$ γ . In addition, the analytical results agree well with the ones from the numerical method.

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“…[80,81] In a typical ALD process, the substrate is alternately exposed to different gaseous precursors, which react in a self-limiting manner to deposit metal atoms in an atomic layerby-layer fashion. [91,92] Generally, one complete ALD cycle contains two main processes. [67] Taking the deposition of Pt atoms on graphene as an example (Figure 2), the first step is the reaction between the Pt precursor and the absorbed oxygen on the surface of graphene.…”

Section: Atomic Layer Depositionmentioning

confidence: 99%

Heterogeneous Single Atom Electrocatalysis, Where “Singles” Are “Married”

Zang

¹

,

Kou

²

,

Pennycook

³

et al. 2020

Advanced Energy Materials

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There is an intensive search for heterogeneous single atom catalysts (SACs) of high activity, efficiency, durability, and selectivity for a wide variety of electrocatalytic conversion and chemical reactions, such as the hydrogen evolution reaction (HER), oxygen evolution/reduction reaction (OER and ORR), CO2 reduction reaction (CO2 RR), and nitrogen reduction reaction (NRR). With the downsizing from nanoparticles and clusters to single atoms, there are steady changes in the bond and coordination environment for each and every atom involved. Indeed, the single atoms in these electrocatalysts are not “singles”; they are “married” to the supporting surfaces, and their performance is controlled by the bonding and coordination with the substrate surfaces. Herein, an overview is presented on the brief history leading to the rapid development of SACs and their current status, by focusing on their synthesis, control of composition, strategies to realize single atoms with the desired bonds and coordination, and targeted performance in selected reactions. Their applications in the selected spectrum of energy conversion and chemical reactions are discussed, in relation to their structures at varying length scales down to the atomic level. A particular emphasis is placed on on‐going research activities, together with the future perspectives and particular challenges for SACs.

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“…In this model the vector condensate is induced by a magnetic field, meaning that the emergence of phase transition is induced not only by the chemical potential/charge density, but also by the background magnetic field. Based MCV pwave model, the effects of the Weyl corrections is deeply studied in [36,47]. It is found that the presence of the higher order Weyl corrections facilitates the emergence of the superfluid phase [36].…”

Section: Introductionmentioning

confidence: 99%

Holographic p-wave superconductivity from higher derivative theory

Liu

¹

,

Fu

²

,

Li

³

et al. 2021

Eur. Phys. J. C

4

0

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We construct a holographic SU(2) p-wave superconductor model with Weyl corrections. The high derivative (HD) terms do not seem to spoil the generation of the p-wave superconducting phase. We mainly study the properties of AC conductivity, which is absent in holographic SU(2) p-wave superconductor with Weyl corrections. The conductivities in superconducting phase exhibit obvious anisotropic behaviors. Along y direction, the conductivity $$\sigma _{yy}$$ σ yy is similar to that of holographic s-wave superconductor. The superconducting energy gap exhibits a wide extension. For the conductivity $$\sigma _{xx}$$ σ xx along x direction, the behaviors of the real part in the normal state are closely similar to that of $$\sigma _{yy}$$ σ yy . However, the anisotropy of the conductivity obviously shows up in the superconducting phase. A Drude-like peak at low frequency emerges in $$Re\sigma _{xx}$$ R e σ xx once the system enters into the superconducting phase, regardless of the behaviors in normal state.

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Holographic p-wave superconductor with $$C^2F^2$$ correction

Cited by 14 publications

References 61 publications

Holographic Lifshitz superconductors with Weyl correction

Holographic Lifshitz superconductors with Weyl correction

Heterogeneous Single Atom Electrocatalysis, Where “Singles” Are “Married”

Holographic p-wave superconductivity from higher derivative theory

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