Emergence of a Superconducting State from an Antiferromagnetic Phase in Single Crystals of the Heavy Fermion Compound<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>Ce</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>PdIn</mml:mi><mml:mn>8</mml:mn></mml:msub></mml:math>

Kaczorowski, D.; Pikul, Adam; Gnida, D.; Tran, V.H.

doi:10.1103/physrevlett.103.027003

Cited by 68 publications

(47 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A broad peak is found at T coh ¼ 25 K, which is attributed to a crossover between incoherent scattering at high temperature and the development of a coherent heavy-fermion state at lower temperatures. The curve is very smooth below 20 K, suggesting that there are no impurity phases, especially for the antiferromagnetic CeIn 3 with T N $ 10 K [29,30]. In Fig.…”

mentioning

confidence: 87%

“…The in-plane superconducting coherence length ¼ 47-50 A was estimated for CeCoIn 5 [42]. This value is about 100 times smaller than the mean free path l % 4000 A [33], showing that CeCoIn 5 is in the clean limit ( l. For Ce 2 PdIn 8 , % 82 A and l % 420 Å were estimated [29]. This shows that Ce 2 PdIn 8 is a clean compound ( < l) too, although not as clean as CeCoIn 5 .…”

mentioning

confidence: 98%

“…However, none of the related compounds, CeMIn 5 (M ¼ Rh, Ir) and Ce 2 MIn 8 (M ¼ Co, Rh, Ir), shows any sign of the Q phase [24][25][26][27][28]. Recently, it was found that Ce 2 PdIn 8 is also a heavy-fermion superconductor with T c ¼ 0:68 K at ambient pressure [29]. In this paper, we report the observations of a field-induced QCP, the nodal superconductivity, and a first-order-like phase transition at H c2 in Ce 2 PdIn 8 by resistivity and thermal conductivity measurements.…”

mentioning

confidence: 99%

“…However, for Ce 2 PdIn 8 , l % 420 A has been estimated [29], roughly one order smaller than CeCoIn 5 . In this case, vortex scattering does not show a significant effect, and ðHÞ=T of Ce 2 PdIn 8 behaves more like the typical d-wave superconductor Tl-2201 at low field [38].…”

mentioning

confidence: 99%

See 3 more Smart Citations

Field-Induced Quantum Critical Point and Nodal Superconductivity in the Heavy-Fermion SuperconductorCe2PdIn8

et al. 2011

Self Cite

View full text Add to dashboard Cite

The in-plane resistivity and thermal conductivity of the heavy-fermion superconductor Ce 2 PdIn 8 single crystals were measured down to 50 mK. A field-induced quantum critical point, occurring at the upper critical field H c2 , is demonstrated from the ðTÞ $ T near H c2 and ðTÞ $ T 2 when further increasing the field. The large residual linear term 0 =T at zero field and the rapid increase of ðHÞ=T at low field give evidence for nodal superconductivity in Ce 2 PdIn 8 . The jump of ðHÞ=T near H c2 suggests a first-order-like phase transition at low temperature. These results mimic the features of the famous CeCoIn 5 superconductor, implying that Ce 2 PdIn 8 may be another interesting compound to investigate for the interplay between magnetism and superconductivity. The interplay between magnetism and superconductivity has been a central issue for heavy-fermion superconductors [1], high-T c cuprates [2], and iron pnictides [3]. Among them, one particularly interesting case is the heavy-fermion superconductor CeCoIn 5 , with T c ¼ 2:3 K at ambient pressure [4]. Its superconducting gap has d-wave symmetry [5,6]. While there is no static magnetism in CeCoIn 5 at zero field, a field-induced antiferromagnetic (AF) quantum critical point (QCP) has been clearly demonstrated by resistivity and specific heat measurements [7,8]. Initially, it was very puzzling why the AF QCP is located right at the upper critical field H c2 .Meanwhile, the observations of first-order phase transition at low temperature and H c2 and a second magnetization and specific heat anomaly well inside the superconducting state have been interpreted as the signature of a Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconducting state [5,[9][10][11][12]. The novel FFLO state with broken spatial symmetry was predicted in the 1960s [13,14], but it has never been experimentally verified before. The possible FFLO state at the low-temperaturehigh-field (LTHF) corner of the H À T phase diagram of CeCoIn 5 has stimulated extensive studies [15].More recently, NMR, neutron scattering, and muon spin rotation ( SR) experiments have provided clear evidence for a field-induced magnetism in this LTHF part of the phase diagram [16][17][18][19][20][21]. It was identified as a spin-density wave (SDW) order with an incommensurate modulation Q ¼ ð0:44; 0:44; 0:5Þ. Interestingly, this SDW order disappears in the normal state above H c2 , showing that magnetic order and superconductivity in CeCoIn 5 are directly coupled [16,17]. While this has nicely explained the field-induced AF QCP at H c2 [7,8], the physical origin of this LTHF superconducting Q phase is still under debate. For example, Yanase and Sigrist have suggested that the incommensurate SDW order is stabilized in the FFLO state by the appearance of the Andreev bound state localized around the zeros of the FFLO order parameter [22]. Aperis, Varelogiannis, and Littlewood have argued that the Q phase is a pattern of coexisting condensates: a d-wave singlet superconducting state, a staggered -triplet superconducting s...

show abstract

mentioning

confidence: 87%

mentioning

confidence: 98%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Field-Induced Quantum Critical Point and Nodal Superconductivity in the Heavy-Fermion SuperconductorCe2PdIn8

et al. 2011

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here two CeIn 3 layers are separated by one TIn 2 layer, and the structure dimensionality partially evolves from 2D to 3D [1,2,3]. Recently, new structures and compounds, like CePt 2 In 7 [4], Ce 2 PdIn 8 [5,6], Ce 5 Pd 2 In 19 and Ce 3 PdIn 11 [7] with T = Pd or Pt have been discovered and subjected to studies of their crystal structure and physical properties. In conjunction with the already known Ce n T m In 3n+2m compounds, they significantly enrich the spectrum of dimensionality evolution from 2D-like to 3D systems.…”

Section: Introductionmentioning

confidence: 99%

Single crystal study of the layered heavy fermion compounds Ce2PdIn8, Ce3PdIn11, Ce2PtIn8 and Ce3PtIn11

Kratochvílová

Dušek

Uhlířová

et al. 2014

Journal of Crystal Growth

View full text Add to dashboard Cite

We report on single crystal growth and crystallographic parameters results of Ce 2 PdIn 8 , Ce 3 PdIn 11, Ce 2 PtIn 8 and Ce 3 PtIn 11 . The Pt-systems Ce 2 PtIn 8 and Ce 3 PtIn 11 are synthesized for the first time. All these compounds are member of the Ce n T m In 3n+2m (n = 1, 2,..; m = 1, 2,.. and T = transition metal) to which the extensively studied heavy fermion superconductor CeCoIn 5 belongs. Single crystals have been grown by In self-flux method. Differential scanning calorimetry studies were used to derive optimal growth conditions. Evidently, the maximum growth conditions for these materials should not exceed 750 °C. Single crystal x-ray data show that Ce 2 TIn 8 compounds crystallize in the tetragonal Ho 2 CoGa 8 phase (space group P4/mmm) with lattice parameters a =4.6898(3) Å and c =12.1490(8) Å for the Pt-based one (Pd: a = 4.6881(4) Å and c = 12.2031(8) Å). The Ce 3 TIn 11 compounds adopt the Ce 3 PdIn 11 structure with a = 4.6874(4) Å and c = 16.8422(12) Å for the Pt-based one (Pd: a = 4.6896 Å and c = 16.891 Å). Specific heat experiments on Ce 3 PtIn 11 and Ce 3 PdIn 11 have revealed that both compounds undergo two successive magnetic transitions at T 1 ~ 2.2 K followed by T N ~ 2.0 K and T 1 ~ 1.7 K and T N ~ 1.5 K, respectively. Additionally, both compounds exhibit enhanced Sommerfeld coefficients yielding γ Pt = 0.300 J/mol K 2 Ce (γ Pd = 0.290 J/mol K 2 Ce), hence qualifying them as heavy fermion materials.

show abstract

Quantum criticality and novel phases: Summary and outlook

Schofield

2010

Physica Status Solidi (b)

View full text Add to dashboard Cite

This conference summary and outlook provides a personal overview of the topics and themes of the August 2009 Dresden meeting on quantum criticality and novel phases. The dichotomy between the local moment and the itinerant views of magnetism is revisited and refreshed in new materials, new probes and new theoretical ideas. New universality and apparent zero temperature phases of matter move us beyond the old ideas of quantum criticality. This is accompanied by alternative pairing interactions and as yet unidentified phases developing in the vicinity of quantum critical points.In discussing novel order, the magnetic analogues of superconductivity are considered as candidate states for the hidden order that sometimes develops in the vicinity of quantum critical points in metallic systems. These analogues can be thought of as "pairing" in the particle-hole channel and are tabulated. This analogy is used to outline a framework to study the relation between ferromagnetic fluctuations and the propensity of a metal to nematic type phases-which at weak coupling correspond to Pomeranchuk instabilities. This question can be related to the fundamental relations of Fermi liquid theory.

show abstract

Emergence of a Superconducting State from an Antiferromagnetic Phase in Single Crystals of the Heavy Fermion CompoundCe2PdIn8

Cited by 68 publications

References 21 publications

Field-Induced Quantum Critical Point and Nodal Superconductivity in the Heavy-Fermion SuperconductorCe2PdIn8

Field-Induced Quantum Critical Point and Nodal Superconductivity in the Heavy-Fermion SuperconductorCe2PdIn8

Single crystal study of the layered heavy fermion compounds Ce2PdIn8, Ce3PdIn11, Ce2PtIn8 and Ce3PtIn11

Quantum criticality and novel phases: Summary and outlook

Contact Info

Product

Resources

About