Publisher’s Note: Exploring the Fragile Antiferromagnetic Superconducting Phase in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>CeCoIn</mml:mi><mml:mn>5</mml:mn></mml:msub></mml:math>[Phys. Rev. Lett.<b>105</b>, 187001 (2010)]

Blackburn, E.; Das, Pinaki; Eskildsen, Morten; Forgan, E. M.; Laver, Mark; Niedermayer, Ch.; Petrović, C.; White, J. S.

doi:10.1103/physrevlett.105.199903

Cited by 20 publications

(31 citation statements)

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“…12,13 This led to suggest that in CeCoIn 5 a Fulde-Ferrell-LarkinOvchinnikov (FFLO) 14,15 state is realized. Some recent neutron-diffraction results, however, show that in this phase antiferromagnetic order with a fixed magnetic wave vector appears, 16,17 which is in stark contrast to the expected ground state proposed by FF and LO. 18 This unusual but fascinating appearance of antiferromagnetism inside the superconducting phase is a challenge for our understanding and has led to considerable theoretical efforts.…”

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confidence: 40%

Fermi-surface evolution in Yb-substituted CeCoIn5

et al. 2012

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We report results of systematic de Haas-van Alphen (dHvA) studies on Ce 1−x Yb x CoIn 5 single crystals with varying Yb concentration. For x = 0.1, the well-known Fermi surfaces and the heavy effective masses of CeCoIn 5 (x = 0) have changed only slightly. We start to observe changes of the Fermi-surface topology at x = 0.2 leading to a drastic reconstruction above x = 0.55. At these concentrations, the effective masses are reduced considerably to values between 0.7 and 2.6 free electron masses. For both YbCoIn 5 and CeCoIn 5 , the angular-resolved dHvA frequencies can be very well described by conventional density-functional theory calculations. Projection of the Bloch states onto atomic Yb-4f orbitals yields a 4f occupation of 13.7 electrons, in agreement with previous experimental results indicating an intermediate Yb valence of +2.3.

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confidence: 40%

Fermi-surface evolution in Yb-substituted CeCoIn5

et al. 2012

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“…[29][30][31] At high magnetic fields near H c2 , an unusual magnetic "Q-phase" has been reported to exist in a narrow field region further confirming the interplay between super- conductivity and the localized magnetism. [32,33] Neutron measurements were performed at NIST (Gaithersburg, USA) using MACS [34] and at the ILL (Grenoble, France) using the IN12 spectrometer and the D23 and D3 diffractometers. The HHL aligned sample was prepared using self-flux method.…”

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confidence: 99%

“…conductivity and the localized magnetism. [32,33] Neutron measurements were performed at NIST (Gaithersburg, USA) using MACS [34] and at the ILL (Grenoble, France) using the IN12 spectrometer and the D23 and D3 diffractometers. The HHL aligned sample was prepared using self-flux method.…”

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Single to Multiquasiparticle Excitations in the Itinerant Helical MagnetCeRhIn5

et al. 2015

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CeRhIn5 is an itinerant magnet where the Ce 3+ spins order in a simple helical phase. We investigate the spin excitations and observe sharp spin-waves parameterized by a nearest neighbor exchange JRKKY =0.88 ± 0.05 meV. At higher energies, the spin fluctuations are heavily damped where single quasiparticle excitations are replaced by a momentum and energy broadened continuum constrained by kinematics of energy and momentum conservation. The delicate energy balance between localized and itinerant characters results in the breakdown of the single quasiparticle picture in CeRhIn5.The noninteracting quasiparticle description of excitations is fundamental to condensed matter physics and the understanding of low energy fluctuations. However, interacting quasiparticle states have recently been recognized as important for the understanding of anomalous phases. For example, composite states including resonating valence bond states [1], Zhang-Rice singlets [2] or spinon-holons in the pseudogap, [3] have been suggested to be fundamental to superconductivity, frustrated magnetism, and even quantum criticality. [4][5][6] We use neutron scattering to measure the breakdown of the single quasiparticle description of the spin excitations in a helical itinerant heavy fermion magnet.CeRhIn 5 is a heavy fermion metal, part of the CeT In 5 (T =Rh, Ir, and Co) series displaying an interplay between localized antiferromagnetism and superconductivity. [7][8][9][10] The presence of two-dimensional layers of Ce 3+ ions connects the physics of these systems with other unconventional superconductors as in the cuprates [11][12][13][14][15] CeRhIn 5 is isostructural with CeCoIn 5 , which is superconducting at ambient pressures with a T c =2.3 K. [14] The order parameter of the superconducting phase has a d-wave symmetry with nodes in the ab plane. [27,28] Magnetism and superconductivity are strongly coupled as evidenced by neutron scattering measurements reporting a doublet spin-resonance peak connected with superconductivity and indicating an order parameter that changes sign, consistent with d-wave symmetry. conductivity and the localized magnetism. [32,33] Neutron measurements were performed at NIST (Gaithersburg, USA) using MACS [34] and at the ILL (Grenoble, France) using the IN12 spectrometer and the D23 and D3 diffractometers. The HHL aligned sample was prepared using self-flux method. [14] To correct for the large neutron absorption, [35,36] a finite element analysis has been done. Further details are provided in the supplementary information.arXiv:1511.09003v1 [cond-mat.str-el]

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“…5 Interestingly, superconductivity originates from the surface alloy rich in Zn. 6 In addition, the spin-singlet pairing superconductivity and magnetic order parameters entwine each other in a spatially modulated pattern, which allows for their mutual coexistence in for example borocarbides, 7 CeCoIn 5 in high magnetic fields, 8,9 HoMo 6 S 8 , 10 P doped EuFe 2 As 2 , 11 and ErRh 4 B 4 .…”

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Surface-induced magnetic fluctuations in a single-crystal NiBi3superconductor

et al. 2012

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We report anistropy in superconducting and normal state of NiBi3 single crystals with Tc = 4.06 K. The magnetoresistance results indicate the absence of scattering usually associated with ferromagnetic metals, suggesting the absence of bulk long range magnetic order below 300 K. However, the electron spin resonance results demonstrate that ferromagnetism fluctuations exist on the surface of the crystal below 150K.

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Publisher’s Note: Exploring the Fragile Antiferromagnetic Superconducting Phase inCeCoIn5[Phys. Rev. Lett.105, 187001 (2010)]

Cited by 20 publications

References 0 publications

Fermi-surface evolution in Yb-substituted CeCoIn5

Fermi-surface evolution in Yb-substituted CeCoIn5

Single to Multiquasiparticle Excitations in the Itinerant Helical MagnetCeRhIn5

Surface-induced magnetic fluctuations in a single-crystal NiBi3superconductor

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