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The superconductor to insulator transition in the presence of long-range Coulomb interactions is studied using Monte Carlo techniques. At integer filling the transition is second order. At half filling we find evidence of a first order…

Condensed Matter · Physics 2009-10-28 Erik Sorensen , Eric Roddick

Spin-triplet chiral p-wave superconductivity is typically described by a two-component order parameter, and as such is prone to unique emergent effects when compared to the standard single-component superconductors. Here we present the…

Superconductivity · Physics 2018-01-03 L. -F. Zhang , L. Covaci , M. V. Milošević

We study topological transitions in one dimensional superconductors that can harbor multiple edge Majorana bound states protected by chiral symmetry. The chiral symmetry arises due to the structure of the internal spin degrees of freedom of…

Superconductivity · Physics 2025-05-05 Kristian Løvås Svalland , Maria Teresa Mercaldo , Mario Cuoco

A simulation study for the magnetization process is performed for the multi-domain state in a chiral p-wave superconductor, using the time-dependent Ginzburg-Landau theory. The external field penetrates inside as core-less vortices through…

Superconductivity · Physics 2007-08-01 Masanori Ichioka , Yasushi Matsunaga , Kazushige Machida

Basing on self-consistent solution of non-linear GL-equations, the phase boundary is found, which divides the regions of I- and II-order phase transitions of a superconducting cylinder in magnetic field to normal state. This boundary is a…

Superconductivity · Physics 2007-05-23 G. F. Zharkov

We study numerically the superconductor to insulator transition in two-dimensional phase-glass (or chiral-glass) models with varying degree of disorder. These models describe the effects of gauge disorder in superconductors due to random…

Superconductivity · Physics 2020-12-02 Enzo Granato

The chiral topological superconductor in two dimensions has a full pairing gap in the bulk and a single chiral Majorana state at the edge. The vortex of the chiral superconducting state carries a Majorana zero mode which is responsible for…

Mesoscale and Nanoscale Physics · Physics 2015-03-13 Xiao-Liang Qi , Taylor L. Hughes , Shou-Cheng Zhang

We investigate the magnetization processes of a standard Ginzburg-Landau model for chiral p-wave superconducting states in an applied magnetic field. We find that the phase diagram is dominated by triangular lattices of doubly quantized…

Superconductivity · Physics 2016-09-15 Julien Garaud , Egor Babaev , Troels Arnfred Bojesen , Asle Sudbø

On the basis of Eilenberger theory, we study the vortex state when a magnetic field is applied nearly parallel to the ab plane in a chiral p-wave superconductor with a large anisotropy ratio of ab and c, as in Sr2RuO4. We quantitatively…

Superconductivity · Physics 2014-04-22 Masahiro Ishihara , Yuujirou Amano , Masanori Ichioka , Kazushige Machida

The phase diagram of finite isospin, zero temperature QCD with the pions coupled to photons in a uniform external magnetic field is explored in the low field, small isospin density regime for which chiral perturbation theory is a valid…

Nuclear Theory · Physics 2015-04-16 Prabal Adhikari , Thomas D. Cohen , Julia Sakowitz

A chiral $p_x+ip_y$ superconductor on a square lattice with nearest and next-nearest hopping and pairing terms is considered. Gap closures, as various parameters of the system are varied, are found analytically and used to identify the…

Superconductivity · Physics 2013-11-27 Antonio Russo , Sudip Chakravarty

Recalling the expectation of an extremely strong primordial magnetic field $H$, we recheck transitions among the phases of chiral symmetry restoration ($\chi SR$), chiral symmetry breaking ($\chi SB$), and pion superfluidity ($\pi SF$)in…

Nuclear Theory · Physics 2023-02-01 Gaoqing Cao

We study the phase transition to the superconducting state taking into account the fluctuations of the order parameter and of the vector magnetic field and discuss the question of the order of transition occuring in this model. We use the…

Condensed Matter · Physics 2007-05-23 R. Folk , Yu. Holovatch

We introduce a family of two-dimensional lattice models of quasicrystals, using a range of square hard cores together with a soft interaction based on an aperiodic tiling set. Along a low temperature isotherm we find, by Monte Carlo…

Statistical Mechanics · Physics 2015-05-27 David Aristoff , Charles Radin

Multi-component spin-singlet superconductors with competing 0- and $\pi$-pairing couplings, as in $s_{++}$ and $s_{\pm}$ phases, are close to instabilities with a spontaneous breaking of time-reversal symmetry. We demonstrate that the…

Superconductivity · Physics 2022-08-29 Yuriy Yerin , Stefan-Ludwig Drechsler , Mario Cuoco , Caterina Petrillo

The superconductor to insulator transition is studied in a self-charging model for a ladder of Josephson-junctions in presence of an external magnetic field. Path integral Monte Carlo simulations of the equivalent (1+1)-dimensional…

Superconductivity · Physics 2009-11-11 Enzo Granato

A superconductor with $p_x+ip_y$ order has long fascinated the physics community because vortex defects in such a system host Majorana zero modes. Here we propose a simple construction of a chiral superconductor using proximitized quantum…

Superconductivity · Physics 2021-03-10 Tarun Tummuru , Oguzhan Can , Marcel Franz

We study the phase diagram of a new model that exhibits a first order transition between s-wave superconducting and antiferromagnetic phases. The model, a generalized Hubbard model augmented with competing spin-spin and pair-pair…

Strongly Correlated Electrons · Physics 2009-11-07 M. Feldbacher , F. F. Assaad , F. Hebert , G. G. Batrouni

Using Monte Carlo simulations, we study thermal and critical properties of two systems, in which domain walls and so-called $Z_2$-vortices as topological defects are presented. The main model is a lattice version of the $O(3)$ principal…

Other Condensed Matter · Physics 2017-03-16 A. O. Sorokin

In the preceding paper(Prog.Theor.Phys.108(2002)929 or hep-ph/0207255), we have shown that the critical line of the first order chiral transition of QCD can have two endpoints. In this addendum, we elucidate the mechanism to realize the…

High Energy Physics - Phenomenology · Physics 2009-11-10 Masakiyo Kitazawa , Tomoi Koide , Teiji Kunihiro , Yukio Nemoto
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