Effect of interlayer coupling on the coexistence of antiferromagnetism and superconductivity in Fe pnictide superconductors: A study of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ca</mml:mi></mml:mrow><mml:mrow><mml:mn>0.74</mml:mn><mml:mo>(</mml:mo><mml:mn>1</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mrow><mml:mn>0.26</mml:mn><mml:mo>(</mml:mo><mml:mn>1</mml:mn><mm

Jiang, Shan; Liu, Lian; Schütt, Michael; Hallas, Alannah; Shen, Bing; Wang, Tian; Emmanouilidou, Eve; Shi, Aoshuang; Luke, G. M.; Uemura, Y. J.; Fernandes, Rafael M.; Ni, Ni

doi:10.1103/physrevb.93.174513

Cited by 23 publications

(21 citation statements)

References 40 publications

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“…Finally, the specific-heat jump at T c (also directly proportional to the superconducting volume fraction) has been measured in crystals of a similar composition (Co-doped instead of Ni doped). 8 It is found ∆C p /T c = 6.7 mJ/(mol Fe K 2 ), that follows the ∆C p /T c vs. T c scaling reported in Ref. 42 for different IBS.…”

Section: Bulk Nature Of the Superconductivitysupporting

confidence: 84%

“…The composition of the single crystals used in the experiments is Ca 1−x La x Fe 1−y Ni y As 2 with x = 0.17 − 0.20 and y = 0.044 (3). The partial substitution of Fe by Ni (or Co) improves the superconducting properties and sharpens the superconducting transition, 8,32 which is essential to study critical phenomena around T c . They were grown by a self-flux method.…”

Section: Crystal Growth and Characterizationmentioning

confidence: 99%

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Quasi-two-dimensional behavior of 112-type iron-based superconductors

Sóñora¹,

Carballeira²,

Ponte³

et al. 2017

Phys. Rev. B

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Fluctuation magnetoconductivity and magnetization above the superconducting transition temperature (Tc) are measured on the recently discovered 112 family of iron-based superconductors (IBS), Ca1−xLaxFe1−yNiyAs2, which presents an extra As-As chain spacer-layer. The analysis in terms of a generalization of the Lawrence-Doniach (LD) approach to finite applied magnetic fields indicates that these compounds are among the most anisotropic IBS (γ up to ∼ 30), and provides a compelling evidence of a quasi -two-dimensional behavior for doping levels near the optimal one.

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Section: Bulk Nature Of the Superconductivitysupporting

confidence: 84%

Section: Crystal Growth and Characterizationmentioning

confidence: 99%

Quasi-two-dimensional behavior of 112-type iron-based superconductors

Sóñora¹,

Carballeira²,

Ponte³

et al. 2017

Phys. Rev. B

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“…1, doping CaFeAs 2 with La can stabilize a high-T c superconductivity over 35 K 17,20 . For samples with The electronic phase diagram for 112-type Febased superconductor Ca1−xLaxFe1−yCoyAs2 based on previous experimental results 20,22 . For Ca1−xLaxFeAs2, the AFM transition temperature TN grows with increasing electron doping from La substitution on the Ca site.…”

Section: Introductionmentioning

confidence: 99%

Correlation between non-Fermi-liquid behavior and superconductivity in (Ca, La)(Fe,Co) As2 iron arsenides: A high-pressure study

Zhou

et al. 2017

Phys. Rev. B

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Non-Fermi-liquid (NFL) phenomena associated with correlation effects have been widely observed in the phase diagrams of unconventional superconducting families. Exploration of the correlation between the normal state NFL, regardless of its microscopic origins, and the superconductivity has been argued as a key to unveiling the mystery of high-Tc pairing mechanism. Here we systematically investigate the pressure-dependent in-plane resistivity (ρ) and Hall coefficient (RH ) of a high quality 112-type Fe-based superconductor Ca1−xLaxFe1−yCoyAs2 (x = 0.2, y = 0.02). With increasing pressure, the normal state resistivity of the studied sample exhibits a pronounced crossover from non-Fermi-liquid to Fermi-liquid (FL) behaviors. Accompanied with this crossover, Tc is gradually suppressed. In parallel, the extremum in Hall coefficient RH (T ) curve, possibly due to anisotropic scattering induced by spin fluctuations, is also gradually suppressed. The symbiosis of NFL and superconductivity implies that these two phenomena are intimately related. Further study on the pressure-dependent upper critical field reveals that the two-band effects are also gradually weakened with increasing pressure and reduced to one-band Werthamer-Helfand-Hohenberg limit in the low Tc regime. Overall, our study supports the picture that NFL, multigap, extreme RH (T ) are all of the same magnetic origin, i.e., the spin fluctuations in the 112 iron arsenide superconductors. arXiv:1808.07609v1 [cond-mat.supr-con]

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“…The further development of the field of curvilinear antiferromagnetism should involve both theory and experiment to address the impact of geometry on responses of curved antiferromagnets. In addition, in a number of materials antiferromagnetism coexists with superconductivity so that both, ferromagnetic [508][509][510][511][512][513][514][515] and antiferromagnetic [516][517][518][519][520][521][522][523] materials can host curvature effects on magnetism and superconductivity (see also Section 5) at the same time.…”

Section: Perspectives Of Curvilinear Antiferromagnetsmentioning

confidence: 99%

New Dimension in Magnetism and Superconductivity: 3D and Curvilinear Nanoarchitectures

et al. 2021

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condensed matter physics, including cell membranes, [1] nematic crystals, [2,3] superfluids, [4] semiconductors, [5][6][7][8] ferromagnets, [9] and superconductors. [10,11] Currently, much attention is paid to strongly correlated electronic systems, for example, ferromagnets and superconductors, as they provide a unique tool to manipulate the topology of coexisting vector and scalar fields, associated with geometries of conventional systems.Until recently, in the case of magnetism, the influence of the geometry on the spin vector fields was addressed primarily by the design of the sample boundaries. This approach naturally brings the shape anisotropy to the system and leads to the formation of specific spin textures, for example, magnetic vortices [12] and antivortices [13] as well as provides control over the dynamics of the topologically nontrivial magnetic solitons. [14][15][16][17][18] This discussion also tackles the state of the art in modern experimental antiferromagnetism, where the design of the sample topography and boundaries allows to control the domain wall states. [19][20][21][22] With the development of novel fabrication techniques allowing to realize complex 3D architectures, not only the boundary effects but also the extrinsic geometrical properties (e.g., local curvatures) can be addressed rigorously for the case of ferromagnets [23][24][25][26][27] as well as superconductors. [28][29][30] The explored effects are directly related to the interplay between the Traditionally, the primary field, where curvature has been at the heart of research, is the theory of general relativity. In recent studies, however, the impact of curvilinear geometry enters various disciplines, ranging from solid-state physics over soft-matter physics, chemistry, and biology to mathematics, giving rise to a plethora of emerging domains such as curvilinear nematics, curvilinear studies of cell biology, curvilinear semiconductors, superfluidity, optics, 2D van der Waals materials, plasmonics, magnetism, and superconductivity. Here, the state of the art is summarized and prospects for future research in curvilinear solid-state systems exhibiting such fundamental cooperative phenomena as ferromagnetism, antiferromagnetism, and superconductivity are outlined. Highlighting the recent developments and current challenges in theory, fabrication, and characterization of curvilinear micro-and nanostructures, special attention is paid to perspective research directions entailing new physics and to their strong application potential. Overall, the perspective is aimed at crossing the boundaries between the magnetism and superconductivity communities and drawing attention to the conceptual aspects of how extension of structures into the third dimension and curvilinear geometry can modify existing and aid launching novel functionalities. In addition, the perspective should stimulate the development and dissemination of research and development oriented techniques to facilitate rapid transitions from laboratory demonstrations to industry-...

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Effect of interlayer coupling on the coexistence of antiferromagnetism and superconductivity in Fe pnictide superconductors: A study ofCa0.74(1)La0.26(1

Cited by 23 publications

References 40 publications

Quasi-two-dimensional behavior of 112-type iron-based superconductors

Quasi-two-dimensional behavior of 112-type iron-based superconductors

Correlation between non-Fermi-liquid behavior and superconductivity in (Ca, La)(Fe,Co) As2 iron arsenides: A high-pressure study

New Dimension in Magnetism and Superconductivity: 3D and Curvilinear Nanoarchitectures

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