Pressure effect on competition between charge density wave and superconductivity in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi>ZrTe</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>: Appearance of pressure-induced reentrant superconductivity

Yomo, R.; Yamaya, K.; Abliz, Melike; Hedo, Masato; Uwatoko, Yoshiya

doi:10.1103/physrevb.71.132508

Cited by 76 publications

(76 citation statements)

References 17 publications

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“…The effect of pressure on CDW is akin to that of the doping of the foreign atoms in the lattice, where redistribution of charge leads to the reduction in the nested FS. [13,14] Previous studies have reported the presence of filamentary SC in single crystalline ZrTe 3 with T c < 2 K, with weakly coupled SC filaments aligned parallel to the 'a' axis with the spacing of 4 nm. [6,7] These SC filaments run parallel to the 'a' axis, perpendicular direction of triangular prismatic chain of ZrTe 3 .…”

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confidence: 98%

“…T c initially falls below 1.2 K at 0.5 GPa, then increases again to 4.7 K at 11 GPa. [13] Since the coupling constant for SC pairing is proportional to the electronic constant divided by the mean square phonon energy, the softening of the phonon modes enhances the coupling constant and increase the T c . [14,15] In the literature, most of work is focused on single crystalline samples and there is no report on the polycrystalline ZrTe 3 , highlighting the superconducting or charge density wave properties.…”

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confidence: 99%

“…The relative change in the resistivity due to CDW is given by '' = (R 1 -R 2 )/R 1 = ( 1 - 2 )/ 1 , where R 1 and R 2 are the resistivities in the CDW state and the expected value in the absence of the CDW. [13,22] The resistivity R 1 and R 2 are schematically shown in the inset of the figure 8. The conductivity of the metal is defined as  = N 0 e 2 v f 2 , where N 0 , v f and  are the DOS at E F , the Fermi velocity and the relaxation time of the conduction electrons, respectively.…”

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Superconductivity at 5.2 K in ZrTe₃polycrystals and the effect of Cu and Ag intercalation

Yadav¹,

Paulose²

2012

J. Phys.: Condens. Matter

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We report the occurrence of superconductivity in polycrystalline samples of ZrTe3 at 5.2 K temperature at ambient pressure. The superconducting state coexists with the charge density wave (CDW) phase, which sets in at 63K. The intercalation of Cu or Ag, does not have any bearing on the superconducting transition temperature but suppresses the CDW state. The feature of CDW anomaly in these compounds is clearly seen in the DC magnetization data. Resistivity data is analysed to estimate the relative loss of carriers and reduction in the nested Fermi surface area upon CDW formation in the ZrTe 3 and the intercalated compounds.

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Superconductivity at 5.2 K in ZrTe₃polycrystals and the effect of Cu and Ag intercalation

Yadav¹,

Paulose²

2012

J. Phys.: Condens. Matter

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“…CDW ordering, as well as SDW ordering, competes with or coexists with superconductivity. [15][16][17][18][19][20] In this letter, we demonstrate that superconductivity at T c ¼ 5:2 K coexists with CDW in platinumbased 122 arsenide SrPt 2 As 2 . The superconducting transition temperature of SrPt 2 As 2 is considerably high compared with those of other non-iron-based 122 arsenides such as SrNi 2 As 2 (T c ¼ 0:62 K) 21) and BaNi 2 As 2 (T c ¼ 0:7 K).…”

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Coexistence of Superconductivity and Charge Density Wave in SrPt₂As₂

2010

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SrPt 2 As 2 is a novel arsenide superconductor, which crystallizes in the CaBe 2 Ge 2 -type structure as a different polymorphic form of the ThCr 2 Si 2 -type structure. SrPt 2 As 2 exhibits a charge-density-wave (CDW) ordering at about 470 K and enters into a superconducting state at T c ¼ 5:2 K. The coexistence of superconductivity and CDW refers to Peierls instability with a moderately strong electron-phonon interaction. Thus SrPt 2 As 2 can be viewed as a nonmagnetic analog of iron-based superconductors, such as doped BaFe 2 As 2 , in which superconductivity emerges in close proximity to spin-density-wave ordering.KEYWORDS: non-iron-based pnictide, superconductivity, charge-density wave, SrPt 2,3) BaFe 2 As 2 is the compound most studied among the iron-based families so far and is widely thought to represent the generic features of the iron-based superconductors.2,3) BaFe 2 As 2 exhibits AFM ordering below T N ¼ 140 K.4) The partial chemical substitution of either Ba, Fe, or As ions with a different element suppresses the AFM ordering and induces superconductivity.5-8) The maximum superconducting transition temperature, T c ¼ 38 K for (Ba 1Àx K x )Fe 2 As 2 , 5) is obtained near the critical concentration where AFM ordering is completely suppressed.It has been widely thought that AFM ordering in ironbased superconductors originates from the spin-densitywave (SDW) instability due to the nesting of two Fermi pockets, a hole pocket centered at the À point and an electron pocket centered at the M point, which are connected by the nesting vector Q ¼ ð; Þ.9-12) This characteristic electronic structure is believed to be a key ingredient of the high-temperature superconductivity due to AFM spin fluctuations in iron-based families. 2,3,13,14) Moreover, it has been theoretically proposed that the nesting determines the symmetry of Cooper pairs in the iron-based superconductors, in which a node locates either away from the Fermi surfaces (s AE -wave) 13,14) or directly at the Fermi surface (d-wave).14)The charge-density-wave (CDW) instability is another consequence of Fermi-surface nesting when electron-phonon interaction remains important. CDW ordering, as well as SDW ordering, competes with or coexists with superconductivity. [15][16][17][18][19][20] In this letter, we demonstrate that superconductivity at T c ¼ 5:2 K coexists with CDW in platinumbased 122 arsenide SrPt 2 As 2 . The superconducting transition temperature of SrPt 2 As 2 is considerably high compared with those of other non-iron-based 122 arsenides such as SrNi 2 As 2 (T c ¼ 0:62 K) 21) and BaNi 2 As 2 (T c ¼ 0:7 K). 22)Our observation suggests that Fermi-surface nesting is a key ingredient of the relatively high superconducting transition temperature of SrPt 2 As 2 . SrPt 2 As 2 crystallizes in a tetragonal CaBe 2 Ge 2 -type structure with the space group P4=nmm (#129), 23) as shown in Fig. 1(a). The structure is different from another polymorphic form of 122, a ThCr 2 Si 2 -type structure with the space group I4=mmm (#139), in which BaFe 2 As 2 cryst...

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“…The ability to change their properties by doping 5,14,15 or pressure 16,17 has recently attracted great attention. Of specific interest, some members of metal-rich chalcogenides 10,[18][19][20] , A 2 M 3 X 2 (A=Sn,Pb,In,Tl and Bi; M =Co,Ni,Rh and Pd; X=S and Se) are superconducting at low temperatures 9,21,22 .…”

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Superconducting properties ofRh9In4S4single crystals

et al. 2016

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The synthesis and crystallographic, thermodynamic and transport properties of single crystalline Rh9In4S4 were studied. The resistivity, magnetization and specific heat measurements all clearly indicate bulk superconductivity with a critical temperature, Tc ∼ 2.25 K. The Sommerfeld coefficient γ and the Debye temperature(ΘD) were found to be 34 mJ mol −1 K −2 and 217 K respectively. The observed specific heat jump, ∆C/γTc = 1.66, is larger than the expected BCS weak coupling value of 1.43. Ginzburg-Landau (GL) ratio of the low temperature GL-penetration depth, λGL≈ 5750Å, to the GL-coherence length, ξGL≈ 94Å, is large: κ ∼ 60. Furthermore, we observed a peak effect in the resistivity measurement as a function of both temperature and magnetic field.

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Pressure effect on competition between charge density wave and superconductivity inZrTe3: Appearance of pressure-induced reentrant superconductivity

Cited by 76 publications

References 17 publications

Superconductivity at 5.2 K in ZrTe₃polycrystals and the effect of Cu and Ag intercalation

Superconductivity at 5.2 K in ZrTe₃polycrystals and the effect of Cu and Ag intercalation

Coexistence of Superconductivity and Charge Density Wave in SrPt₂As₂

Superconducting properties ofRh9In4S4single crystals

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Pressure effect on competition between charge density wave and superconductivity inZrTe3: Appearance of pressure-induced reentrant superconductivity

Cited by 76 publications

References 17 publications

Superconductivity at 5.2 K in ZrTe3polycrystals and the effect of Cu and Ag intercalation

Superconductivity at 5.2 K in ZrTe3polycrystals and the effect of Cu and Ag intercalation

Coexistence of Superconductivity and Charge Density Wave in SrPt2As2

Superconducting properties ofRh9In4S4single crystals

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Product

Resources

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Superconductivity at 5.2 K in ZrTe₃polycrystals and the effect of Cu and Ag intercalation

Superconductivity at 5.2 K in ZrTe₃polycrystals and the effect of Cu and Ag intercalation

Coexistence of Superconductivity and Charge Density Wave in SrPt₂As₂