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Heusler compounds are widely studied due to their variety of magnetic properties making them ideal candidates for spintronic and magnetoelectronic applications. V$_3$Al in its metastable D0$_3$-type Heusler structure is a prototype for a…

材料科学 · 物理学 2016-08-10 Iosif Galanakis , Saban Tirpanci , Kemal Ozdogan , Ersoy Sasioglu

Superconductivity and ferromagnetism are generally competing ground states in $d$-electron systems, making their interplay of fundamental interest. We report a comprehensive study of high-quality single- and polycrystalline V$_2$Ga$_5$, a…

The phase diagram of the d=3 Hubbard model is calculated as a function of temperature and electron density n_i, in the full range of densities between 0 and 2 electrons per site, using renormalization-group theory. An antiferromagnetic…

强关联电子 · 物理学 2007-05-23 Michael Hinczewski , A. Nihat Berker

The HfV$_2$Ga$_4$ compound was recently reported to exhibit unusual bulk superconducting properties, with the possibility of multiband behavior. To gain insight into its properties, we performed ab-initio electronic structure calculations…

超导电性 · 物理学 2018-07-25 P. P. Ferreira , F. B. Santos , A. J. S. Machado , H. M. Petrilli , L. T. F. Eleno

Elemental gallium can exist in several phases under ambient conditions. The stable $\alpha$ phase has a superconducting transition temperature, $T_c$, of 0.9~K. By contrast, the $T_c$ of the metastable $\beta$ phase is around 6~K. To…

超导电性 · 物理学 2021-08-23 Yundi Quan , Peter J. Hirschfeld , Richard G. Hennig

The recent observation of superconducting state at atomic scale has motivated the pursuit of exotic condensed phases in two-dimensional (2D) systems. Here we report on a superconducting phase in two-monolayer crystalline Ga films…

This work reports on the novel Heusler superconductor ZrNi2Ga. Compared to other nickel-based superconductors with Heusler structure, ZrNi2Ga exhibits a relatively high superconducting transition temperature of Tc=2.9 K and an upper…

Superconducting properties were studied on high quality superconductors $Ba_{x}(NH_{3})Fe_{2}Se_{2}$ ($T_{c}$ = 39 K) and $Sr_{x}(NH_{3})Fe_{2}Se_{2}$ ($T_{c}$ = 44 K) prepared by intercalating Ba/Sr atoms into tetragonal $\beta$-FeSe by…

超导电性 · 物理学 2016-02-17 Yung-Yuan Hsu , Yu-Bo Li , Shou-Ting Jian , Gu-Kuei Li , Ming-Cheng Yang

The superconducting gap structure of heavy fermion UPd_2Al_3, in which unconventional superconductivity coexists with antiferromagnetic (AF) order with atomic size local moments, was investigated by the thermal conductivity measurements in…

超导电性 · 物理学 2009-11-10 T. Watanabe , K. Izawa , Y. Kasahara , Y. Haga , Y. Onuki , P. Thalmeier , K. Maki , Y. Matsuda

We have studied the half-Heusler compound TbPdBi through resistivity, magnetization, Hall effect and heat capacity measurements. A semimetal behavior is observed in its normal state transport properties, which is characterized by a large…

超导电性 · 物理学 2018-08-01 H. Xiao , T. Hu , W. Liu , Y. L. Zhu , P. G. Li , G. Mu , J. Su , K. Li , Z. Q. Mao

Two superconducting phases of Re3W have been found with different physical properties. One phase crystallizes in a non-centrosymmetric cubic (alpha-Mn) structure and has a superconducting transition temperature, Tc, of 7.8 K. The other…

超导电性 · 物理学 2012-01-05 P. K. Biswas , M. R. Lees , A. D. Hillier , R. I. Smith , W. G. Marshall , D. McK. Paul

The intermetallic quasi-one-dimensional binary superconductor V$_2$Ga$_5$ was recently found to exhibit a topologically nontrivial normal state, making it a natural candidate for a topological superconductor (TSC). By combining…

超导电性 · 物理学 2025-04-24 G. Lamura , D. Tay , R. Khasanov , P. Gentile , C. Q. Xu , X. Ke , I. J. Onuorah , P. Bonfà , Xiaofeng Xu , T. Shiroka

The phase diagram of superconducting $U\!Pt_{3}$ in pressure-temperature plane, together with the neutron scattering data is studied within a two component superconducting order parameter scenario. In order to give a qualitative explanation…

凝聚态物理 · 物理学 2009-10-28 G. Haran , G. A. Gehring

We calculate the superconducting phase diagram as a function of temperature and z-axis anisotropy in a model for tetragonal and cubic systems having strong antiferromagnetic fluctuations. The formal basis for our calculations is the…

超导电性 · 物理学 2007-05-23 J. J. Deisz

The demonstration of a quasi-two-dimensional electron gas (2DEG) and superconducting properties in LaAlO$_3$/SrTiO$_3$ heterostructures has stimulated intense research activity in recent ten years. The 2DEG has unique properties that are…

超导电性 · 物理学 2018-10-03 V. V. Kabanov , I. I. Piyanzina , D. A. Tayurskii , R. F. Mamin

In this letter, we have examined the superconducting ground state of the HfV$_2$Ga$_4$ compound using resistivity, magnetization, zero-field (ZF) and transverse-field (TF) muon-spin relaxation and rotation ($\mu$SR) measurements.…

An unusual quasi-two-dimensional heavy band mass van Hove singularity (vHs) lies very near the Fermi energy in MgCNi3, recently reported to superconduct at 8.5 K. This compound is strongly exchange enhanced and is unstable to ferromagnetism…

超导电性 · 物理学 2009-11-07 H. Rosner , R. Weht , M. D. Johannes , W. E. Pickett , E. Tosatti

We explore both experimental and theoretical aspects of the superconducting properties in the distinctive layered caged compound, Ba$_{3}$Ir$_{4}$Ge$_{16}$. Our approach integrates muon spin rotation and relaxation ($\mu$SR) measurements…

We present a thorough investigation of the physical properties and superconductivity of the binary intermetallic V2Ga5. Electrical resistivity and specific heat measurements show that V2Ga5 enters its superconducting state below Tsc = 3.5…

We report the synthesis of single phase Bi3O2S3 sample and confirm the occurrence of bulk superconductivity with transition temperature at 5.8 K. The Bi3O2S3 super-conductor is categorized as the typical type-II supercon-ductor based on the…

超导电性 · 物理学 2014-11-06 Jifeng Shao , Zhongheng Liu , Xiong Yao , Li Pi , Shun Tan , Changjin Zhang , Yuheng Zhang
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