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We investigate tricritical phase transitions in a holographic model of topological superconductivity using Einstein-Maxwell gravity coupled with a charged scalar field in Anti-de Sitter spacetime. By incorporating both gravitational…

High Energy Physics - Theory · Physics 2026-02-03 Hoang Van Quyet

We show that the superhard boride WB$_{4.2}$ is a superconductor with a T$_c$ of 2.05(5) K. Temperature-dependent magnetic susceptibility, electrical resistivity, and specific heat measurements were used to characterize the superconducting…

A classical SU(2) Einstein-Yang-Mills theory in 3+1 dimensional anti-de Sitter spacetime is believed to be dual to a p-wave superconductor in 2+1 dimensional flat spacetime. In order to calculate the superconductiong coherence length $\xi$…

High Energy Physics - Theory · Physics 2010-05-19 Hua-Bi Zeng , Zhe-Yong Fan , Hong-Shi Zong

This work presents the emergence of superconductivity in Re substituted topological Weyl semimetal MoTe$_{2}$. Re substitution for Mo sites lead to a sizable enhancement in the superconducting transition temperature (T$_{c}$). A record high…

We present a semi-analytic method for constructing holographic black holes that interpolate from anti-de Sitter space to hyperscaling-violating geometries. These are holographic duals of conformal field theories in the presence of an…

High Energy Physics - Theory · Physics 2015-01-26 Andrew Lucas , Subir Sachdev

We use large-scale lattice simulations to compute the rate of baryon number violating processes (the sphaleron rate), the Higgs field expectation value, and the critical temperature in the Standard Model across the electroweak phase…

High Energy Physics - Phenomenology · Physics 2014-10-06 Michela D'Onofrio , Kari Rummukainen , Anders Tranberg

Thermoelectric conductance of Dirac materials and in particular zero modes reveals the effect of topology .Weyl semimetals with a boundary at z = 0 give rise to chiral zero modes with- out backscattering resulting in a significant…

Mesoscale and Nanoscale Physics · Physics 2018-06-11 D. Schmeltzer

By employing the gauge/gravity duality, we disclose the effects of the non-minimal coupling between the scalar and Maxwell fields on the holographic superconductors in the probe limit. As the background spacetime, we consider a five…

High Energy Physics - Theory · Physics 2022-12-16 Mahya Mohammadi , Ahmad Sheykhi

In this paper, we construct a novel holographic superconductor from higher derivative (HD) gravity involving a coupling between the complex scalar field and the Weyl tensor. This HD coupling term provides a near horizon effective mass…

High Energy Physics - Theory · Physics 2020-02-11 Hai-Li Li , Guoyang Fu , Yan Liu , Jian-Pin Wu , Xin Zhang

Recent discovery of both gapped and gapless topological phases in weakly correlated electron systems has introduced various relativistic particles and a number of exotic phenomena in condensed matter physics. The Weyl fermion is a prominent…

I calculate the rate of $B+L$ violating processes in the ``symmetric" phase of the Standard Model by means of semiclassical methods, which are based on an appropriately resummed loop expansion within the dimensionally reduced theory. The…

High Energy Physics - Phenomenology · Physics 2009-10-28 Owe Philipsen

We discover superconductivity in cubic W3Re2C with chiral structure and the superconducting transition temperature Tc is about 6.2 K. Detailed characterizations and analysis indicate that W3Re2C is a bulk type-II BCS superconductor with…

Superconductivity · Physics 2026-01-22 Lei Yang , Jing Jiang , Hui-Hui He , Ying Ma , Kai Liu , Xiao Zhang , Hechang Lei

We predict that superconducting particles will show an apparent increase in thickness at low temperatures when measured by electron holography. This will result not from a real thickness increase, rather from an increase in the mean inner…

Superconductivity · Physics 2013-06-18 J. E. Hirsch

We present a solution of Einstein equations describing a $d$-dimensional planar quintessence AdS black hole which depends on the state parameter $w_q$ of quintessence. We investigate holographic superconductors in this background and probe…

General Relativity and Quantum Cosmology · Physics 2015-06-05 Songbai Chen , Qiyuan Pan , Jiliang Jing

How strong correlations and topology interplay is a topic of great current interest. In this perspective paper, we focus on correlation-driven gapless phases. We take the time-reversal symmetric Weyl semimetal as an example because it is…

Strongly Correlated Electrons · Physics 2024-08-02 Diana M. Kirschbaum , Monika Lužnik , Gwenvredig Le Roy , Silke Paschen

We present here a microscopic two-band model based on the structure of energetic levels of holes in $\mathrm{CuO}_{2}$ conducting layers of cuprates. We prove that two energetically near-lying interacting bands can explain the electron-hole…

Superconductivity · Physics 2016-11-03 J. -B. Bru , W. de Siqueira Pedra , A. -S. Dömel

We use the variational method for the Sturm-Liouville eigenvalue problem to analytically calculate some properties of holographic superconductors with Gauss-Bonnet gravity in probe limit. By studying the holographic p-wave and s-wave…

High Energy Physics - Theory · Physics 2011-04-14 Huai-Fan Li , Rong-Gen Cai , Hai-Qing Zhang

An analysis of experimental heat capacity at $T>T_{c}$ is presented for series of samples $(R)Ba_2Cu_3O_{6+x}$ (with $x$ close to optimal). For all samples the anomaly was discovered which occurred steadily in the interval 250-290 K…

Superconductivity · Physics 2007-05-23 V. N. Naumov , G. I. Frolova , T. Atake , V. V. Nogteva , N. A. Nemov , M. A. Bespyatov , V. G. Potemkin

Migdal-Eliashberg theory of boson-mediated superconductivity contains a $\sqrt{\lambda}$ divergence in the critical temperature $T_c$ for strong electron-boson coupling $\lambda$. In the conventional Migdal-Eliashberg theory, the…

Strongly Correlated Electrons · Physics 2025-11-21 Nikolay V. Gnezdilov , Rufus Boyack

In this paper we have investigated, in the probe limit, $s$-wave holographic superconductors in rotating $AdS_{3+1}$ spacetime using the matching method as well as the St{\"u}rm-Liouville eigenvalue approach. We have calculated the critical…

High Energy Physics - Theory · Physics 2019-04-19 Ankur Srivastav , Sunandan Gangopadhyay