Superconductivity and magnetic order in the noncentrosymmetric half-Heusler compound ErPdBi

Pan, Yu; Никитин, А. М.; Bay, T. V.; Huang, Yingkai; Paulsen, C.; Yan, Binghai; Visser, A. de

doi:10.1209/0295-5075/104/27001

Cited by 91 publications

(107 citation statements)

References 37 publications

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“…However, as stated by authors of Ref. 12, their single crystals may have been contaminated by an impurity phase PdBi 2 superconducting below 1.7 K, and thus strongly inuenced the observed physical properties of the samples studied.…”

Section: Introductionmentioning

confidence: 82%

“…in LaPtBi [8], YPtBi [9,10] and LuPtBi [11] makes these ternaries promising candidates for topological superconductors. Furthermore, a coexistence of superconductivity (T c = 1.22 K) and antiferromagnetic order (T N = 1.06 K) has recently been reported for a potentially topological compound ErPdBi [12]. However, as stated by authors of Ref.…”

Section: Introductionmentioning

confidence: 89%

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Magnetic Order and SdH Effect in Half-Heusler Phase ErPdBi

et al. 2015

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Single crystals of ErPdBi were grown from Bi-ux. The crystal structure of MgAgAs-type was conrmed using X-ray diraction. Magnetization, magnetic susceptibility, electrical resistance and heat capacity measurements revealed an antiferromagnetic phase transition at TN = 1.2 K. At high temperatures, the electrical resistance has a semiconducting-like character ( dR/ dT < 0). The resistance starts decreasing with decreasing T below 15 K and shows a very sharp drop below TN but remains nite down to 0.4 K. Hence, no obvious evidence of superconductivity was found in the electrical transport data. On the other hand, the real part of AC magnetic susceptibility is negative below TC = 1.6 K and its imaginary component has a clear maximum at this temperature that might be associated with the onset of superconducting state. The electrical resistance revealed Shubnikovde Haas oscillations in magnetic elds 8-33 T. Their amplitude decreases with increasing T and disappears above 10 K. Cyclotron mass determined from this dependence is 0.21 me.

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Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 89%

Magnetic Order and SdH Effect in Half-Heusler Phase ErPdBi

et al. 2015

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“…A strong line broadening in ESR was also seen at low temperatures, which indicates that spin-spin Gd 3+ interaction is a dominant relaxation mechanism. ErPdBi shows the combination superconductivity and AFM ordering, which is unusual [381].…”

Section: μSr Nmr and Esrmentioning

confidence: 99%

Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

262

124

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RTX (R=rare earths, T= 3d/4d/5d, transition metals such as Sc, Ti, Mn, Fe, Co, Ni, Cu, Ru, Rh, Pd, Ag, Os, Ir, Pt, Au, and X=p-block elements such as Al, Ga, In, Si, Ge, Sn, As, Sb, Bi) series is a huge family of intermetallics compounds. These compounds crystallize in different crystal structures depending on the constituents. Though these compounds have been known for a long time, they came to limelight recently in view of the large magnetocaloric effect (MCE) and magnetoresistance (MR) shown by many of them. Most of these compounds crystallize in hexagonal and tetragonal crystal structures. Some of them show crystal structure modification with annealing temperature; while a few of them show iso-structural transition in the paramagnetic regime. Their magnetic ordering temperatures vary from very low temperatures to temperatures well above room temperature (~510 K). Depending on the crystal structure, they show a variety of magnetic and electrical properties.These compounds have been characterized by means of a variety of techniques/measurements such as x-ray diffraction, neutron diffraction, magnetic properties, heat capacity, magnetocaloric properties, electrical resistivity, magnetoresistance, thermoelectric power, thermal expansion, Hall effect, optical properties, XPS, Mössbauer spectroscopy, ESR, μSR, NMR, NQR etc. Some amount of work on theoretical calculations on electronic structure, crystal field interaction and exchange interactions has also been reported. The interesting aspect of this series is that they show a variety of physical properties such as Kondo effect, heavy fermion behavior, spin glass state, intermediate valence, superconductivity, multiple magnetic transitions, metamagnetism, large MCE, large positive as well as negative MR, spin orbital compensation, magnetic polaronic behavior, pseudo gap effect etc.Except Mn, no other transition metal in these compounds possesses considerable magnetic moments.Because of this RMnX compounds in general have high ordering temperatures. Interstitial modification using hydrogen and nitrogen is found to alter their crystal structures and magnetic properties considerably. RTX compounds also show interesting pressure effects on their structural and magnetic properties. In summary, these compounds show variety of physical properties over a wide range of temperatures. This review is intended to cover all the important results obtained in this family, particularly in the last few years.

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“…Our generalized Kane model also provides a basis for the future study of magnetic, transport or optical phenomena in this class of materials. Furthermore, we notice that superconductivity can coexist with anti-ferromagnetism in RPdBi(R=Tb,Ho,Dy,Er) 50,54,55 . Thus, it is interesting to ask if topological superconductivity can be realized in these materials.…”

Section: Discussionmentioning

confidence: 84%

“…Our interest in this work is focused on possible topological states in half-Heusler materials with AFM at zero external magnetic field. AFM has been experimentally observed in RPdBi (R = Er, Ho, Gd, Dy, Tb, Nd) and GdPtBi [50][51][52][53][54][55][56] , with Neel temperature ranging from 1K to 13K. To describe AFM in half-Heusler compounds, we construct a generalized six-band Kane model with anti-ferromagnetic coupling terms based on the symmetry principle and justify this model with the microscopic tight-binding model.…”

Section: Introductionmentioning

confidence: 99%

Model Hamiltonian and time reversal breaking topological phases of antiferromagnetic half-Heusler materials

Yan

Liu

2017

Phys. Rev. B

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In this work, we construct a generalized Kane model with a new coupling term between itinerant electron spins and local magnetic moments of anti-ferromagnetic ordering in order to describe the low energy effective physics in a large family of anti-ferromagnetic half-Heusler materials. Topological properties of this generalized Kane model is studied and a large variety of topological phases, including Dirac semimetal phase, Weyl semimetal phase, nodal line semimetal phase, type-B triple point semimetal phase, topological mirror (or glide) insulating phase and anti-ferromagnetic topological insulating phase, are identified in different parameter regions of our effective models. In particular, we find that the system is always driven into the anti-ferromagnetic topological insulator phase once a bulk band gap is open, irrespective of the magnetic moment direction, thus providing a robust realization of anti-ferromagentic topological insulators. Furthermore, we discuss the possible realization of these topological phases in realistic anti-ferromagnetic half-Heusler materials. Our effective model provides a basis for the future study of physical phenomena in this class of materials.

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Superconductivity and magnetic order in the noncentrosymmetric half-Heusler compound ErPdBi

Cited by 91 publications

References 37 publications

Magnetic Order and SdH Effect in Half-Heusler Phase ErPdBi

Magnetic Order and SdH Effect in Half-Heusler Phase ErPdBi

Review on magnetic and related properties of RTX compounds

Model Hamiltonian and time reversal breaking topological phases of antiferromagnetic half-Heusler materials

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