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Through the solid state reaction method, we synthesized a new BiSe2-based superconductor Sr0:5La0:5FBiSe2 with superconducting transition temperature Tc?3.8 K. A strong diamagnetic signal below Tc in susceptibility ?(T) is observed…

Superconductivity · Physics 2016-05-02 Lin Li , Yongliang Xiang , Yihong Chen , Wenhe Jiao , Chuhang Zhang , Li Zhang , Jianhui Dai , Yuke Li

The superconducting state of iron pnictides and chalcogenides exists at the border of antiferromagnetic order. Consequently, these materials could provide clues about the relationship between magnetism and unconventional superconductivity.…

Superconductivity · Physics 2015-03-19 Rong Yu , Pallab Goswami , Qimiao Si , Predrag Nikolic , Jian-Xin Zhu

Epitaxially grown multilayer systems offer the possibility to study the influence of ferromagnetism on superconductivity in a new and controlled way. In this paper, we explore how the superconducting properties of high quality,…

Superconductivity · Physics 2010-03-08 Hiroki Yamazaki , Nic Shannon , Hidenori Takagi

High-transition-temperature (high-Tc) superconductivity develops near antiferromagnetic phases, and it is possible that magnetic excitations contribute to the superconducting pairing mechanism. To assess the role of antiferromagnetism, it…

Superconductivity · Physics 2007-05-23 E. M. Motoyama , G. Yu , I. M. Vishik , O. P. Vajk , P. K. Mang , M. Greven

We theoretically study a finite size $SF_1NF_2$ spin valve, where a normal metal ($N$) insert separates a thin standard ferromagnet ($F_1$) and a thick half-metallic ferromagnet ($F_2$). For sufficiently thin superconductor ($S$) widths…

Superconductivity · Physics 2018-03-12 Klaus Halterman , Mohammad Alidoust

The electronic structures of zig-zag and arm-chair single-walled carbon nanotubes interacting with a transitional-metal atomic nanowire of Ni have been determined. The Ni nanowire creates a large electron density of states (DOS)at the Fermi…

Superconductivity · Physics 2009-11-07 Nacir Tit , M. W. C. Dharma-wardana

In (S/F) hybrids the suppression of superconductivity by the exchange field h_ex of the ferromagnet can be partially lifted when different directions of h_ex are sampled simultaneously by the Cooper pair. In F/S/F trilayer geometries where…

Superconductivity · Physics 2009-11-10 A. Yu. Rusanov , M. Hesselberth , J. Aarts , A. I. Buzdin

We report the coexistence of ferromagnetic order and superconductivity in UCoGe at ambient pressure. Magnetization measurements show that UCoGe is a weak ferromagnet with a Curie temperature T_{C}= 3 K and a small ordered moment $m_{0}$=…

We have created superconductor-ferromagnet composite films in order to test the enhancement of critical current density, Jc, due to magnetic pinning. We co-sputter the type-II superconductor niobium (Nb) and the low-temperature ferromagnet…

The triplet superconductivity in $UGe_2$ and $URhGe$ coexists with itinerant ferromagnetism such that in the pressure-temperature phase diagram the whole region occupied by the superconducting state is situated inside a more vast…

Superconductivity · Physics 2015-05-13 V. P. Mineev

The magnon exchange mechanism of ferromagnetic superconductivity (FM-superconductivity) was developed to explain in a natural way the fact that the superconductivity in $UGe_2$, $ZrZn_2$ and $URhGe$ is confined to the ferromagnetic…

Superconductivity · Physics 2009-11-07 N. Karchev

The transition metal dichalcogenide PdTe$_2$ was recently shown to be a unique system where a type II Dirac semimetallic phase and a superconducting phase co-exist. This observation has led to wide speculation on the possibility of the…

Superconductivity · Physics 2018-01-31 Shekhar Das , Amit , Anshu Sirohi , Lalit Yadav , Sirshendu Gayen , Yogesh Singh , Goutam Sheet

Transition-metal dichalcogenides (TMDs) offer an extremely rich material platform in the exploration of unconventional superconductivity. The unconventional aspects include exotic coupling mechanisms such as the Ising pairing, a complex…

We investigated transport and magnetic properties of NdFeAsO$_{0.9}$F$_{0.1}$ single crystal under hydrostatic pressures up to 50\,GPa. The ambient pressure superconductivity at $T_{c} \sim$ 45.4\,K is fully suppressed at $P_{c} \sim$ 21…

Superconductivity · Physics 2018-09-12 Mahmoud Abdel-Hafiez , M. Mito , K. Shibayama , S. Takagi , M. Ishizuka , A. N. Vasiliev , C. Krellner , H. K. Mao

We study a two-band Hubbard model using the dynamical mean-field theory combined with the exact diagonalization method. At the electron density $n=2$, a transition from a band-insulator to a correlated semimetal occurs when the on-site…

Strongly Correlated Electrons · Physics 2007-05-23 Y. Ono , K. Sano

We discuss the possibility of coexistence of spin-singlet superconductivity and ferromagnetism in a model where the same electrons are assumed responsible for both of them. Our calculations include both zero and finite momentum pairing…

Superconductivity · Physics 2009-11-07 R. Shen , Z. M. Zheng , S. Liu , D. Y. Xing

We consider a general Hamiltonian describing coexistence of itinerant ferromagnetism, spin-orbit coupling and mixed spin-singlet/triplet superconducting pairing in the context of mean-field theory. The Hamiltonian is diagonalized and exact…

Superconductivity · Physics 2009-11-13 J. Linder , A. Sudbø

Motivated by recent experimental studies on superconductivity found in nickelate-based materials, we study the temperature dependence of the spin correlation and the superconducting pairing interaction within an effective two-band Hubbard…

Superconductivity · Physics 2022-11-10 Chao Chen , Runyu Ma , Xuelei Sui , Ying Liang , Bing Huang , Tianxing Ma

Recently, superconductivity has been observed in twisted WSe$_2$ moir\'{e} structures (Xia et al., Nature 2024; Guo et al., Nature 2025). Its transition temperature is high, reaching a few percent of the Fermi temperature scale. Here, we…

Strongly Correlated Electrons · Physics 2025-04-02 Fang Xie , Lei Chen , Shouvik Sur , Yuan Fang , Jennifer Cano , Qimiao Si

Given the rarity of metallic systems that exhibit ferroelectric-like transitions, it is apparently challenging to find a system that simultaneously possesses superconductivity and ferroelectric-like structural instability. Here, we report…