Single crystal growth, bonding analysis and superconductivity of V2Ga5

Lobring, Kim C.; Check, Catherine E.; Zhang, Jianhua; Li, Shoujian; Zheng, Chong; Rogacki, K.

doi:10.1016/s0925-8388(02)00786-7

Cited by 8 publications

(8 citation statements)

References 23 publications

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“…6,[8][9][10] Among them, there is a controversy in the crystal structure of ZrGa 3 . Previously, lattice parameters were determined to be a ¼ 5:605 Å and c ¼ 8:712 Å for ZrGa 3 .…”

Section: Methodsmentioning

confidence: 99%

“…This compound is known as a type II superconductor with a superconducting transition temperature T sc ¼ 3:55 K and an upper critical field H c2 ¼ 3{4 kOe. 6) Figure 5 shows the temperature dependence of the electrical resistivity ρ and the T 2 dependence of the specific heat C in the form of C=T. The electrical resistivity for the current along the tetragonal [001] direction decreases approximately linearly with decreasing temperature and reveals superconductivity at T sc ¼ 3:68 K. The residual resistivity 0 and the residual resistivity ratio RRR (¼ RT = 0 , RT : resistivity at room temperature) are 0 ¼ 1:17 µΩ·cm and RRR ¼ 36, indicating a relatively good single crystal.…”

Section: Gamentioning

confidence: 99%

“…From a jump of the specific heat ÁC, we also obtain ÁC=T sc ¼ 0:64, which is smaller than a BCS value of 1.43. In a previous report, 6) specific heat measurements were not carried out.…”

Section: Gamentioning

confidence: 99%

“…Larger the c-value is, more enhanced two-dimensionality is. We expect that nearly one-dimensional characteristic Fermi surfaces can be realized in V 2 Ga 5 , 6) and two-dimensional Fermi surfaces in ZrGa 3 and ZrAl 3 . 7,8) Fermi surfaces in CoGa 3 are most likely three-dimensional because the c is almost the same as a.…”

Section: Introductionmentioning

confidence: 96%

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Characteristic Fermi Surface Properties of V₂Ga₅, CoGa₃, TiGa₃, ZrGa₃, and ZrAl₃ with Different Tetragonal Structures

et al. 2015

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To clarify the Fermi surface properties based on the dimensionality of electronic states, we grew single crystals of V 2 Ga 5 , CoGa 3 , TiGa 3 , and ZrGa 3 (ZrAl 3 ) with different tetragonal structures and carried out de Haas-van Alphen experiments, together with full-potential linearized augmented plane wave band calculations. A nearly one-dimensional plate Fermi surface is obtained in the band calculations for V 2 Ga 5 with a flat tetragonal structure. The corresponding single crystal is of needle shape along the tetragonal [001] direction. The obtained Fermi surfaces of CoGa 3 are very similar to those of Ni 3 Ga with the AuCu 3 -type cubic structure because the crystal structure of CoGa 3 is nearly cubic and the corresponding single crystal is of pyramidal shape with a flat (111) plane. The Fermi surfaces of TiGa 3 are also very similar to those of YCu 2 Si 2 with the ThCr 2 Si 2 -type tetragonal structure. The cylindrical Fermi surfaces with concave and convex parts are realized in ZrGa 3 and ZrAl 3 with the flat Brillouin zone. The corresponding tetragonal structure is extremely long along the [001] direction. Fig. 1. (a) Three-, (b) two-, and (c) one-dimensional Fermi surfaces.

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“…6,[8][9][10] Among them, there is a controversy in the crystal structure of ZrGa 3 . Previously, lattice parameters were determined to be a ¼ 5:605 Å and c ¼ 8:712 Å for ZrGa 3 .…”

Section: Methodsmentioning

confidence: 99%

Section: Gamentioning

confidence: 99%

“…From a jump of the specific heat ÁC, we also obtain ÁC=T sc ¼ 0:64, which is smaller than a BCS value of 1.43. In a previous report, 6) specific heat measurements were not carried out.…”

Section: Gamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

See 2 more Smart Citations

Characteristic Fermi Surface Properties of V₂Ga₅, CoGa₃, TiGa₃, ZrGa₃, and ZrAl₃ with Different Tetragonal Structures

et al. 2015

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show abstract

“…Lobring et al have prepared large single crystals of the superconducting phase V 2 Ga 5 . 168 The material is a type II superconductor with a transition temperature of 3.59 K. Computational studies have shown that the majority states at the Fermi level are associated with the V d-band.…”

Section: Superconductivitymentioning

confidence: 99%