Pressure-Induced Magnetic Transition and Disappearance of Superconductivity in CeNiGe<sub>3</sub>

Ikeda, Yoichi; Tomijima, Takeshi; Araki, Satoshi; Kobayashi, Tatsuo; Murata, Keizo

doi:10.7566/jpscp.3.015044

Cited by 8 publications

(9 citation statements)

References 21 publications

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“…The background colormap depicts the same resistivity exponent as in figure 1. (b) Similar two domes phase diagram for CeNi 2 Ge 2 from [57] and CeNiGe 3 from [58] T N , T x and T c are deduced from a kink in ρ(T), peak in dρ(T)/dT, and the onset of ρ=0, respectively. T A marks the temperature where incommensurate to commensurate crossover occurs in the NQR data.…”

Section: Heavy Fermionsmentioning

confidence: 70%

“…CeNi2Ge2 and CeNiGe3 exhibit a similar two domes phase diagram as a function of pressure [57], [58] (Fig. 2(b)).…”

Section: Iia the Cecu2si2 Family: Dissecting Qcp And Nflmentioning

confidence: 81%

“…CeNi 2 Ge 2 and CeNiGe 3 exhibit a similar two domes phase diagram as a function of pressure [57,58] (figure 2(b)). The Néel temperature in the latter system acquires a dome feature.…”

Section: Heavy Fermionsmentioning

confidence: 83%

“…[57] and CeNiGe3 from Refs. [58] TN, Tx and Tc are deduced from a kink in ρ(T), peak in dρ(T)/dT, and the onset of ρ = 0, respectively. TA marks the temperature where incommensurate to commensurate crossover occurs in the NQR data.…”

Section: Iia the Cecu2si2 Family: Dissecting Qcp And Nflmentioning

confidence: 99%

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Two types of superconducting domes in unconventional superconductors

Das

Panagopoulos

2016

New J. Phys.

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Uncovering the origin of unconventional superconductivity is often plagued by the overwhelming material diversity with varying normal and superconducting (SC) properties. In this article, we deliver a comprehensive study of the SC properties and phase diagrams using multiple tunings (such as disorder, pressure or magnetic field in addition to doping and vice versa) across several families of unconventional superconductors, including the copper-oxides, heavy-fermions, organics and the recently discovered iron-pnictides, iron-chalcogenides, and oxybismuthides. We discover that all these families often possess two types of SC domes, with lower and higher SC transition temperatures T c , both unconventional but with distinct SC and normal states properties. The lower T c dome arises with or without a quantum critical point (QCP), and not always associated with a non-Fermi liquid (NFL) background. On the contrary, the higher-T c dome clearly stems from a NFL or strange metal phase, without an apparent intervening phase transition or a QCP. The two domes appear either fully separated in the phase diagram, or merged into one, or arise independently owing to their respective normal state characteristics. Our findings suggest that a QCP-related mechanism is an unlikely scenario for the NFL phase in these materials, and thereby narrows the possibility towards short-range fluctuations of various degrees of freedom in the momentum and frequency space. We also find that NFL physics may be a generic route to higher-T c superconductivity.As mentioned in section 3.2, the HF Ce-115 family can be tuned via multiple methods, including doping at every ionic site, pressure and magnetic field. Data obtained using various possible dopings is compiled in figure A1. In CeCo 1−x Rh x In 5, the doping versus T c plot does not exhibit an observable anomaly at the QCP, while an enhancement in T c would be expected here. On the other hand, CeRh 1−x Ir x In 5 exhibits a SC dome around a QCP [47]. However, in both cases the NFL state remains indifferent to the position of the QCP (∼50% doping), with the NFL state remaining dominant in the undoped case. As discussed in the main text, the application of pressure helps split the SC dome into two, and with increasing pressure the optimum T c in both domes increases [35].The In-site of Ce-115 has been doped with Cd ([49]) and Hg ([50]) giving rise to a magnetic phase. Similarly, doping with Sn ([184]) and Pt ([50]) also gives rise to a magnetic phase. In magnetic CeRh(In 1−x Cd x ) 5 , Cd doping first suppresses the AFM Nèel temperature (T N ) and with 7%-8% Cd doping T N shows a sudden upturn. No sign of superconductivity has been reported in this system. In CeCo(In 1−x Cd x ) 5 , superconductivity is suppressed while T N increases with doping and extrapolation of the T N curve points to the possible presence of a QCP around 2%-4% doping. On the other hand, in CeIr(In 1−x Cd x ) 5 superconductivity is suppressed rapidly and with 2%-3% doping AFM emerges. The phase diagram of CeIr(In 1−x Hg x ) 5 is...

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Section: Heavy Fermionsmentioning

confidence: 70%

“…CeNi2Ge2 and CeNiGe3 exhibit a similar two domes phase diagram as a function of pressure [57], [58] (Fig. 2(b)).…”

Section: Iia the Cecu2si2 Family: Dissecting Qcp And Nflmentioning

confidence: 81%

“…CeNi 2 Ge 2 and CeNiGe 3 exhibit a similar two domes phase diagram as a function of pressure [57,58] (figure 2(b)). The Néel temperature in the latter system acquires a dome feature.…”

Section: Heavy Fermionsmentioning

confidence: 83%

Section: Iia the Cecu2si2 Family: Dissecting Qcp And Nflmentioning

confidence: 99%

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Two types of superconducting domes in unconventional superconductors

Das

Panagopoulos

2016

New J. Phys.

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“…(Color online) Temperature dependence of the electrical resistivity of CeNiGe 3 , where the origin of each curves is moved in the vertical direction for clarity (quoted from Ref [11]…”

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confidence: 99%

Phase Transitions Observed Due to the Improvement of Hydrostaticity

Kobayashi

Araki

2016

The Review of High Pressure Science and Technology

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Orbital driven two-dome superconducting phases in multiorbital superconductors

2021

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We theoretically study the superconductivity in multiorbital superconductors based on a threeorbital tight-banding model. With appropriate values of the nearest-neighbour exchange " #$ and the next-nearest-neighbour exchange % #$ , we find a two-dome structure in the ' − phase diagram: one dome in the doping range < 3.9 where the superconducting (SC) state is mainly / 0 1 0 component contributed by inter-orbital pairing, the other dome in the doping range 3.9 < < 4.46 where the SC state is mainly / 0 1 0 + / 0 51 0 components contributed by intra-orbital pairing. We find that the competition between different orbital pairing leads to two-dome SC phase diagrams in multiorbital superconductors, and different matrix elements of " and % considerably affect the boundary of two SC domes.

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Pressure-Induced Magnetic Transition and Disappearance of Superconductivity in CeNiGe₃

Cited by 8 publications

References 21 publications

Two types of superconducting domes in unconventional superconductors

Two types of superconducting domes in unconventional superconductors

Phase Transitions Observed Due to the Improvement of Hydrostaticity

Orbital driven two-dome superconducting phases in multiorbital superconductors

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Pressure-Induced Magnetic Transition and Disappearance of Superconductivity in CeNiGe3

Cited by 8 publications

References 21 publications

Two types of superconducting domes in unconventional superconductors

Two types of superconducting domes in unconventional superconductors

Phase Transitions Observed Due to the Improvement of Hydrostaticity

Orbital driven two-dome superconducting phases in multiorbital superconductors

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Product

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Pressure-Induced Magnetic Transition and Disappearance of Superconductivity in CeNiGe₃