Affiliation:
1. Theoretical Physics and Quantum Technologies Department, NUST “MISIS”, Leninskiy Ave. 4, 119049 Moscow, Russia
Abstract
It is demonstrated, that recently proposed by the author Q-ball mechanism of the pseudogap state and high-Tc superconductivity in cuprates may be detected in micro X-ray diffraction, since it imposes inverse correlations between the size and scattering intensities of the Q-ball charge-density-wave (CDW) fluctuations in these compounds. The Q-ball charge Q gives the number of condensed elementary bosonic excitations in a CDW fluctuation of finite amplitude. The attraction between these excitations inside Euclidean Q-balls is self-consistently triggered by the simultaneous condensation of Cooper/local pairs. Euclidean Q-ball solutions, analogous to the famous Q-balls of squarks in the supersymmetric standard model, arise due to the global invariance of the effective theory under the U(1) phase rotation of the Fourier amplitudes of the short-range CDW fluctuations. A conserved ‘Noether charge’ Q along the Matsubara time axis equals Q∝TM2V, where the temperature T, Q-ball’s volume V, and fluctuation amplitude M enter. Several predictions are derived in an analytic form that follow from this picture. The conservation of the charge Q leads to an inverse proportionality between the volume V and X-ray scattering intensity ∼M2 of the CDW puddles found in micro X-ray scattering experiments. The theoretical temperature dependences of the most probable Q value of superconducting Q-balls and their size and scattering amplitudes fit well the recent X-ray diffraction data in the pseudogap phase of high-Tc cuprates.
Funder
Increase Competitiveness Program of NUST MISIS
Subject
Condensed Matter Physics,Electronic, Optical and Magnetic Materials
Reference33 articles.
1. Mukhin, S.I. (2022). Euclidean Q-Balls of Fluctuating SDW/CDW in the ‘Nested’ Hubbard Model of High-Tc Superconductors as the Origin of Pseudogap and Superconducting Behaviors. Condens. Matter, 7.
2. Euclidean Q-balls of electronic spin/charge densities confining superconducting condensates as the origin of pseudogap and high-Tc superconducting behaviours;Mukhin;Ann. Phys.,2022
3. Campi, G., Barba, L., Zhigadlo, N.D., Ivanov, A.A., Menushenkov, A.P., and Bianconi, A. (2022). Q-Balls in the pseudogap phase of Superconducting HgBa2CuO4+y. Condens. Matter, 8.
4. Inhomogeneity of charge-density-wave order and quenched disorder in a high-Tc superconductor;Campi;Nature,2015
5. Diamagnetism and Cooper pairing above Tc in cuprates;Li;Phys. Rev. B,2010
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献