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Related papers: Odd-frequency triplet pairing in mixed-parity supe…

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We study the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state of spin fluctuation mediated pairing, and focus on the effect of coexisting charge fluctuations. We find that (i) consecutive transitions from singlet pairing to FFLO and further to…

Superconductivity · Physics 2009-12-15 Hirohito Aizawa , Kazuhiko Kuroki , Takehito Yokoyama , Yukio Tanaka

We study the induced odd-frequency pairing states in ballistic normal metal/superconductor (N/S) junctions where a superconductor has even-frequency symmetry in the bulk and a normal metal layer has an arbitrary length. Using the…

Superconductivity · Physics 2009-11-13 Y. Tanaka , Y. Tanuma , A. A. Golubov

We obtain the general conditions for the emergence of odd-frequency superconducting pairing in a two-dimensional (2D) electronic system proximity-coupled to a superconductor, making minimal assumptions about both the 2D system and the…

Mesoscale and Nanoscale Physics · Physics 2016-07-08 Christopher Triola , Driss M. Badiane , Alexander V. Balatsky , E. Rossi

The rich variety of iron-based superconductors and their complex electronic structure lead to a wide range of possibilities for gap symmetry and pairing components. Here we solve in the 2-Fe Brillouin zone the full frequency-dependent…

Superconductivity · Physics 2016-09-28 R. Nourafkan , G. Kotliar , A. -M. S. Tremblay

Superconductors that possess both broken spatial inversion symmetry and spin-orbit interactions exhibit a mix of spin singlet and triplet pairing. Here, we report on measurements of the superconducting properties of electron-doped, strained…

A chain of magnetic atoms with non-collinear spin configuration on a superconductor is a promising new system that can host Majorana Fermions (MFs). In this study, we clarify that in the presence of MFs, an odd-frequency Cooper pair is…

Superconductivity · Physics 2015-03-04 Hiromi Ebisu , Keiji Yada , Hideaki Kasai , Yukio Tanaka

A magnetic adatom chain, proximity coupled to a conventional superconductor with spin-orbit coupling, exhibits locally an odd-parity, spin-triplet pairing amplitude. We show that the singlet-triplet junction, thus formed, leads to a net…

Superconductivity · Physics 2018-06-15 Narayan Mohanta , Arno P. Kampf , Thilo Kopp

In the present paper, we propose the parity even,orbital singlet and spin triplet pairing state as the ground state of the newly discovered super-conductor $LaO_{1-x}F_xFeAs$.The pairing mechanism involves both the special shape of the…

Superconductivity · Physics 2009-11-13 Xi Dai , Zhong Fang , Yi Zhou , Fu-chun Zhang

Topological superconductors are essential elements of the periodic table of topological quantum matter. However, the relevant odd-parity spin-triplet superconductors are rare. We report high-resolution measurements of the complex electrical…

We discuss the appearance of odd-frequency spin-triplet s-wave superconductivity, first proposed by Berezinskii [{\it JETP} {\bf 20}, 287 (1974)], on the surface of a topological insulator proximity coupled to a conventional spin-singlet…

Superconductivity · Physics 2015-03-20 Annica M. Black-Schaffer , Alexander V. Balatsky

We discuss transport properties of fully spin-polarized triplet superconductors, where only electrons of one spin component (along a certain axis) are paired. Due to the structure of the order parameter space, wherein phase and spin…

Superconductivity · Physics 2021-01-20 Eyal Cornfeld , Mark S. Rudner , Erez Berg

Conventional electron-phonon coupling induces either odd (triplet) or even (singlet) pairing states in a time reversal and inversion invariant Dirac semi - metal. In certain range of the chemical potential $\mu $ and parameters…

Superconductivity · Physics 2015-06-22 Baruch Rosenstein , B. Ya. Shapiro , Dingping Li , I. Shapiro

The superconducting order parameter of strontium ruthenate is the center of a lasting puzzle calling for theoretical studies that include the seldom-considered effects of spin-orbit coupling and the frequency-dependence of the order…

Superconductivity · Physics 2022-09-01 Olivier Gingras , Nikita Allaglo , Reza Nourafkan , Michel Côté , André-Marie S. Tremblay

A theory that predicts a spin-triplet, even-parity superconducting ground state in two-dimensional electron systems is re-analyzed in the light of recent experiments showing a possible insulator-to-conductor transition in such systems. It…

Strongly Correlated Electrons · Physics 2009-10-30 D. Belitz , T. R. Kirkpatrick

We review some recent progresses on the study of ultracold Fermi gases with synthetic spin-orbit coupling. In particular, we focus on the pairing superfluidity in these systems at zero temperature. Recent studies have shown that different…

Quantum Gases · Physics 2014-10-08 Wei Yi , Wei Zhang , Xiaoling Cui

We study the behavior of Cooper pair amplitudes that emerge when a two-dimensional superconductor is coupled to two parallel nanowires, focusing on the conditions for realizing odd-frequency pair amplitudes in the absence of spin-orbit…

Superconductivity · Physics 2019-07-24 Christopher Triola , Annica M. Black-Schaffer

Even-parity interorbital spin-triplet pairing emerges as an intriguing candidate in multiorbital superconductors with significant Hund's and spin-orbit coupling. Within such a state, the pairing is dominated by the intraband…

Superconductivity · Physics 2021-10-01 Jonathan Clepkens , Austin W. Lindquist , Xiaoyu Liu , Hae-Young Kee

Despite the benefits that directional coupler based parity-time symmetric systems may offer to the field of integrated optics, the realization of such couplers relies on rather strict design constraints on the waveguide parameters. Here, we…

Optics · Physics 2015-12-23 Chicheng Ma , Wiktor Walasik , Natalia M. Litchinitser

Parity is a fundamental quantum number to classify a state of matter. Materials rarely possess ground states with odd parity. We show that the superconducting state in iron-based superconductors is classified as an odd parity s-wave…

Superconductivity · Physics 2013-07-18 Jiangping Hu

Quasi-low-dimensional type II superconductors in parallel magnetic fields are studied when singlet pairing interactions and relatively weak triplet pairing interactions coexist. Singlet and triplet components of order parameter are mixed at…

Superconductivity · Physics 2009-10-31 Hiroshi Shimahara