Resistance of some REMe3 compounds, RE=La and Lu, Me=Sn, Pb, In, and Ga

Kletowski, Z.; Fabrowski, R.; Slawinski, Piotr R.; Henkie, Z.

doi:10.1016/s0304-8853(96)00671-3

Cited by 22 publications

(19 citation statements)

References 6 publications

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“…2. In general agreement with previous works [41,43], the electronic [32] 194 Experimental [37] 170 FP-LAPW method within LDA [41] 2080 3720 2315 235 FP-LAPW method within GGA [42] 2316 4082 2573 140 structures of these superconductors reveal metallic character since at least one band crosses the Fermi level along all the considered symmetry directions. The inclusion of SOC causes some bands to split at the high-symmetry points in the Brillouin zone.…”

Section: B Electronic Propertiessupporting

confidence: 87%

“…Following these experimental studies, the experimental value of T c for LaPb 3 has been reported to be 4.18 K in the work of Welsh and co-workers [35], while thermal and magnetic properties of this material have been presented in the experimental study of Canepa and co-workers [36]. The Debye temperatures of LaIn 3 and LaPb 3 are derived to be 210 and 125 K, respectively, from specific heat measurements made by Kletowski et al [37]. Recently, an electron spin resonance study [38] of the LaIn 3−x Sn x superconducting system confirms that the T c value of LaIn 3 is around 0.70 K and it exhibits an oscillatory dependence as a function of Sn substitution, reaching its largest value T c ≈ 6.4 K for the LaSn 3 end member.…”

Section: Introductionmentioning

confidence: 93%

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Role of spin-orbit coupling in the physical properties of LaX3 ( X=In , P, Bi) superconductors

et al. 2018

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We report a comprehensive and complementary study on structural, elastic, mechanical, electronic, phonon, and electron-phonon interaction properties of LaX 3 (X = In, Pb, and Bi) using first-principles density functional calculations within the local density approximation with and without the spin-orbit coupling (SOC). The calculated lattice parameters for these intermetallic compounds with and without SOC are found to differ by less than 2% from their experimental values. The effect of SOC on the elastic, mechanical, electronic, phonon, and electron-phonon interaction properties is more profound for LaPb 3 and LaBi 3 containing heavier X elements rather than LaIn 3 containing lighter X element. The inclusion of SOC considerably removes the degeneracies of some bands near the Fermi level and makes some phonon branches in LaPb 3 and LaBi 3 softer and increases the strength of dominant peaks in their Eliashberg spectral functions. Thus the SOC related enhancement of their electron-phonon coupling parameter values can be related to both a softening of their phonon dispersion curves and an increase in their electron-phonon coupling matrix elements. The superconducting transition temperature with SOC is computed to be 0.69 K for LaIn 3 , 4.23 K for LaPb 3 , and 6.87 K for LaBi 3 , which agree very well with the respective measured values of 0.70, 4.18, and 7.30 K.

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Section: B Electronic Propertiessupporting

confidence: 87%

Section: Introductionmentioning

confidence: 93%

Role of spin-orbit coupling in the physical properties of LaX3 ( X=In , P, Bi) superconductors

et al. 2018

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“…Inset presents the heat-capacity data of a URhGa 5 single crystal plotted as C/T versus T 2 tivities have been well described by a generalised Bloch-Grü neisen formula, r(T) B-G ¼ ñ 0 þ AT n with n varying between 2.4 and 3.9 [5]. At high temperatures, non-linear r(T) dependencies in connection with relatively large absolute values (e.g.…”

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confidence: 90%

“…1. This value can be compared to values of B equal to À1.2 Â 10 --7 mWcm K --3 for LaPb 3 [5] and to --(1.5-4.6) Â 10 --6 mWcm K --3 for R 6 Me 23 (R ¼ Y, Er and Me ¼ Mn, Fe) [7]. The same mechanism leads to a formula for the diffusion thermoelectric power of a two band conductor [8]:…”

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confidence: 99%

Transport Properties of URhGa5 Single Crystals

Wawryk

Henkie

Cichorek

et al. 2002

phys. stat. sol. (b)

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PACS: 65.40.Ba; 72.15.Eb; 72.15.Jf Recent investigations on the heavy fermion CeTIn 5 family (T ¼ Co, Rh, Ir) revealed its fascinating physical properties. For instance, CeCoIn 5 displays unconventional supercon-ductivity already at T C ¼ 2.3 K [1], while CeRhIn 5 is an incommensurate antiferromagnet that transforms to a superconductor with T C ¼ 2.1 K at pressures greater than 1.6 GPa [2]. In addition bulk superconductivity below around 19 K has been observed in PuCoGa 5 [3]. Hoping for interesting properties of other isostructural actinide-based compounds, we have grown single crystals of UCoGa 5 , URhGa 5 and ThCoGa 5 . Our preliminary thermoelectric power measurements done on the U-based compounds showed values as large as 60 mV/K at room temperature, which are uncommon for metallic materials. This motivated us to study the thermoelectric power S(T), the electrical resistivity r(T), and the thermal conductivity k(T), to determine the dimensionless thermoelectric figure of merit ZT ¼ S 2 T/rj. The study has been completed by measurements of the low-temperature specific heat C(T).Single crystals of URhGa 5 were grown by the same method as used for the CeTIn 5 compounds [4]. The X-ray examination showed that URhGa 5 crystallises in the tetragonal HoCoGa 5 -type structure (space group P4/mmm) with a ¼ b ¼ 4.302(1) A and c ¼ 6.803(1) A. Figure 1 presents r(T) along the a-axis for URhGa 5 , while the inset of Fig. 1 displays the specific-heat data down to 0.4 K, plotted as C(T)/T vs. T 2 . Neither the r(T) nor the C(T) results do show any phase transition between 0.4 and 300 K. Moreover, a small Sommerfeld coefficient equal to 7 mJ/K 2 mol as well as transition-metal-like r(T) dependence bring into question a Kondo effect in this material. The ñ (T) data of URhGa 5 in the entire temperature range resemble those for the nonmagnetic ReMe 3 compounds (Re ¼ La and Lu; Me ¼ Sn, Pb, In, and Ga). Their low-T resisphys. stat. sol. (b) 232, No. 1, R4-R6 (2002) 7 . 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 3 0 0 ρ µΩ .2 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 85K*D 5 T 2 ( K 2 ) 0 2 0 4 0 6 0 8 0 1 0 0 C / T ( m J / K 2 m o l ) 0 2 0 4 0 6 0 8 0 1 0 0 γ = 7 m J / K 2 m o l Θ D = 2 3 0 K ρ = ρ 0 + ρ B -G + B T 3 ρ = ρ 0 + ρ B -G Fig. 1. Temperature dependence of the electrical resistivity along the aaxis for URhGa 5 . Open circles denote the experimental r(T) data; the dashed line denotes resistivity calculated with the generalised BlochGrü neisen formula r(T) B-G þ r 0 ; and the solid line represents the r(T) ¼ r 0 þ r(T) B-G + BT 3 dependence,where B ¼ --1.23 Â 10 --6 mWcm K --3 is a band-structure dependent parameter. Inset presents the heat-capacity data of a URhGa 5 single crystal plotted as C/T versus T 2

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“…The suppression of the superconducting transition temperature by impurities was observed. From the temperature dependence of resistivity for LaPb 3 Kletowski et al [5] estimated the Debye temperature θ as 125 K. Ebihara et al [7] have found the phase diagrams of CePb 3 and they observed three phases: antiferromagnetic, spin op, and paramagnetic. The phase diagram and de Haasvan Alphen (dHvA) eect of PrPb 3 under pressure was also studied by Endo et al [9].…”

Section: Introductionmentioning

confidence: 99%

Electronic Structure and Magnetic Properties of La_1-xCe_xPb₃and La_1-xPr_xPb₃Alloys

2014

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The electronic structure and magnetic properties of La1−xCexPb3 and La1−xPrxPb3 are studied using the spin--polarized relativistic KorringaKohnRostoker coherent potential approximation method within the local spin density approximation. The calculated density of states at the Fermi level increases with the increase of the concentration. The dependence of spin and orbital magnetic moments of La1−xCexPb3 and La1−xPrxPb3 (0 < x < 1) on the concentration is also reported. The densities of states at the Fermi energy are dominated by Ce(Pr) 4f 5/2 and 4f 7/2 states.

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Resistance of some REMe3 compounds, RE=La and Lu, Me=Sn, Pb, In, and Ga

Cited by 22 publications

References 6 publications

Role of spin-orbit coupling in the physical properties of LaX3 ( X=In , P, Bi) superconductors

Role of spin-orbit coupling in the physical properties of LaX3 ( X=In , P, Bi) superconductors

Transport Properties of URhGa5 Single Crystals

Electronic Structure and Magnetic Properties of La_1-xCe_xPb₃and La_1-xPr_xPb₃Alloys

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Resistance of some REMe3 compounds, RE=La and Lu, Me=Sn, Pb, In, and Ga

Cited by 22 publications

References 6 publications

Role of spin-orbit coupling in the physical properties of LaX3 ( X=In , P, Bi) superconductors

Role of spin-orbit coupling in the physical properties of LaX3 ( X=In , P, Bi) superconductors

Transport Properties of URhGa5 Single Crystals

Electronic Structure and Magnetic Properties of La1-xCexPb3and La1-xPrxPb3Alloys

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Product

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Electronic Structure and Magnetic Properties of La_1-xCe_xPb₃and La_1-xPr_xPb₃Alloys