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The conventional Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state relies on the Zeeman effect of an external magnetic field to break time-reversal symmetry, forming a state of finite-momentum Cooper pairing. In superconductors with broken…

Quantum shape effect appears under the size-invariant shape transformations of strongly confined structures. Such a transformation distinctively influences the thermodynamic properties of confined particles. Due to their characteristic…

Mesoscale and Nanoscale Physics · Physics 2022-11-08 Alhun Aydin , Jonas Fransson , Altug Sisman

Among numerous hypotheses, recently proposed to explain superconductivity in iron-based superconductors [1-9], many consider Fermi surface (FS) nesting [2, 4, 8, 10] and dimensionality [4, 9] as important contributors. Precise determination…

The emergence of superconductivity in two-dimensional transition metal dichalcogenides with strong spin orbit coupling (SOC) has opened new avenues for exploring exotic superconducting states. Here, we report experimental observation of an…

In this paper we have studied the effect of external magnetic field in the co-existing phase of superconducting and anti-ferromagnetism of rare earth nickel borocarbides. The anti-ferromagnetism in these systems might have originated due to…

Superconductivity · Physics 2020-03-03 Salila Das , Prakash Chandra Padhi

Circulating orbital currents, originating from the spin-orbit interaction, are calculated for semiconductor nanostructures in the shape of spheres, disks, spherical shells and rings for the electron ground state with spin oriented along a…

Mesoscale and Nanoscale Physics · Physics 2015-06-22 J. van Bree , A. Yu. Silov , P. M. Koenraad , M. E. Flatté

We show that on superconducting spherical nanoshells, the co-existence of the Meissner state with a variety of vortex patterns drives the phase transition to higher magnetic fields. The spherical geometry leads to a Magnus-Lorentz force…

Superconductivity · Physics 2009-04-20 J. Tempere , V. N. Gladilin , I. F. Silvera , J. T. Devreese , V. V. Moshchalkov

We show that inhomogeneities in the spatial distribution of Cooper pairs and in the phase of the local superconducting order parameter in the vicinity of a superconductor-normal state transition (SNT) in two dimensions can be highly…

Superconductivity · Physics 2018-08-23 Sarath Sankar , Vikram Tripathi

We study the influence of the inverse proximity effect on the superconductivity nucleation in hybrid structures consisting of the semiconducting nanowires placed in contact with a thin superconducting film and discuss the resulting…

Superconductivity · Physics 2018-04-17 Alexander A. Kopasov , Ivan M. Khaymovich , Alexander S. Mel'nikov

We perform a theoretical study of the orbital effect of a magnetic field on a proximity-coupled islands array of $p_{x}+ip_{y}$ topological superconductors. To describe the system, we generalize the tight-binding model of the Hofstadter…

Mesoscale and Nanoscale Physics · Physics 2020-04-29 Omri Lesser , Yuval Oreg

We suggest that an inhomogeneous (non-zero momentum) paired phase can appear in the absence of an external magnetic field in the system with a predominant interband pairing and with separate Fermi-surface sheets. The Fermi wave vector…

Superconductivity · Physics 2015-06-23 Michał Zegrodnik , Jozef Spałek

Electrical readout of 180$^\circ$ switching in strictly compensated collinear antiferromagnets remains a major challenge in antiferromagnetic spintronics. Electrical writing of perpendicularly magnetized ferromagnets by out-of-plane orbital…

Materials Science · Physics 2026-04-06 Hui Wang , Huiying Liu , Yanfeng Ge , Xukun Feng , Jiaojiao Zhu , Jin Cao , Cong Xiao , Shengyuan A. Yang , Lay Kee Ang

The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, an unusual superconducting state, defies high magnetic fields beyond the Pauli paramagnetic limit. It exhibits a spatial modulation of the superconducting order parameter in real space and…

We study the phase diagram of a superconducting ring threaded by an Aharonov-Bohm flux and an in-plane magnetic Zeeman field. The simultaneous presence of both the external flux and the in-plane magnetic field leads to the competition…

Superconductivity · Physics 2015-05-13 H. T. Quan , Jian-Xin Zhu

The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state is a superconducting phase characterized by broken translational-symmetry, where Cooper pairs form with non-zero momentum between Zeeman-split Fermi surfaces. This state is highly sensitive…

Superconductivity · Physics 2026-01-27 X. Y. Liu , Z. Kao , J. Luo , J. Yang , A. F. Fang , J. Zhao , R. Zhou , Guo-qing Zheng

Flux-periodic oscillations of the superconducting gap in proximitized core-shell nanowires are explored. Periodicity of oscillations in the energy spectrum of a cylindrical nanowire is compared with nanowires having hexagonal and square…

Mesoscale and Nanoscale Physics · Physics 2023-06-27 Kristjan Ottar Klausen , Anna Sitek , Sigurdur I. Erlingsson , Andrei Manolescu

We study conductance spectroscopy of a two-dimensional junction between a normal metal and a strongly-correlated superconductor in an applied magnetic field in the Pauli limit. Depending on the field strength the superconductor is either in…

Strongly Correlated Electrons · Physics 2014-07-24 Jan Kaczmarczyk , Mariusz Sadzikowski , Jozef Spałek

We consider the nanoscale electronic phase separation in a wide class of different materials, mostly in strongly correlated electron systems. The phase separation turns out to be quite ubiquitous manifesting itself in different situations,…

Strongly Correlated Electrons · Physics 2021-11-17 M. Yu. Kagan , K. I. Kugel , A. L. Rakhmanov

Motivated by recent experimental evidences signalling the chiral charge order in the vanadium-based kagome superconductors, we theoretically investigate the impact of the chiral flux charge order over the experimental outcomes for the…

Superconductivity · Physics 2023-02-27 Hong-Min Jiang , Ming-Xun Liu , Shun-Li Yu

Quasi-two dimensional superconductors with sufficiently weak interlayer coupling allow magnetic flux to penetrate in the form of Josephson vortices for in-plane applied magnetic fields. A consequence is the dominance of the Zeeman…

Strongly Correlated Electrons · Physics 2016-02-17 G. Koutroulakis , H. Kühne , J. A. Schlueter , J. Wosnitza , S. E. Brown