Electronic structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">CeRhIn</mml:mi></mml:mrow><mml:mrow><mml:mn>5</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mo>:</mml:mo></mml:math>de Haas–van Alphen and energy band calculations

Hall, D.; Palm, E. C.; Murphy, T. P.; Tozer, S. W.; Petrović, C.; Miller-Ricci, Eliza; Peabody, Lydia; Li, Charis Quay Huei; Alver, Ümit; Goodrich, R. G.; Sarrao, J. L.; Pagliuso, P. G.; Wills, J. M.; Fisk, Z.

doi:10.1103/physrevb.64.064506

Cited by 100 publications

(67 citation statements)

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“…55,89) With increasing pressure, the dHvA amplitude is strongly reduced, but the dHvA frequencies for main cylindrical Fermi surfaces are unchanged up to 2.1 GPa, which is above P Ã ¼ 1:6 GPa where superconductivity sets in. Figure 23 shows the pressure dependence of the cyclotron mass, which was determined at H ¼ 12 T. 82) The cyclotron mass increases steeply above 1.6 GPa.…”

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confidence: 99%

Recent Advances in the Magnetism and Superconductivity of Heavy Fermion Systems

et al. 2004

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We present recent advances in the magnetism and superconductivity of rare earth and uranium compounds. Heavy fermions are formed on the basis of the competition between the RKKY interaction and the Kondo effect in these compounds. The application of pressure to these compounds is useful to control the electronic states in the antiferromagnets CeRh 2 Si 2 and CeRhIn 5 , and the ferromagnet UGe 2 . The quadrupole interaction or the quadrupole Kondo effect is found to be responsible for heavy fermions in PrFe 4 P 12 . A rich variety of superconducting properties are demonstrated: superconductivity of CeCoIn 5 and CeRhIn 5 in the vicinity of a quantum critical point, coexistence of ferromagnetism and superconductivity in UGe 2 , and superconductivity based on the quadrupole fluctuations in PrOs 4 Sb 12 , together with the relation between the superconducting transition temperature and the quasi-two dimensionality of the electronic states.

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confidence: 99%

Recent Advances in the Magnetism and Superconductivity of Heavy Fermion Systems

et al. 2004

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“…The recent Muon knight shift measurements also found that the magnetic field dependence of the reduction of the muon knight shift is not in proportion to √ H, which is roughly explained by the Fermi liquid relation and is inconsistent with simple expectation for a d-wave superconductors 29 . These facts likely reflect the multiband nature of superconductivity in CeCoIn 5 , similar to the story of Fe-based superconductors 16,17 .On the other hand, de Hass-van Alphen (dHvA) experiments in CeCoIn 5 clearly indicate the FS is three dimensional (3D) [30][31][32] . If quasi-2D FS (a large FS denoted as β-band in the dHvA experiments) is strictly cylindrical along the k z direction, the hot lines would be parallel to k z .…”

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confidence: 87%

“…1. Note that band E k− reproduces the above FS and is denoted as the β-band in the de Hass van Alphen experiments [30][31][32] . While band E k+ remains above the Fermi energy, and thus has no contribution to the FS topological structure.…”

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Nonmagnetic impurity resonance states as a test of superconducting pairing symmetry in CeCoIn5

Liu

2013

Phys. Rev. B

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We theoretically study the effect of a nonmagnetic impurity in heavy fermion superconductor CeCoIn5 within a coherent three-dimensional Anderson lattice model and the T-matrix approximation approach. By considering two known possible pairing symmetry candidates d x 2 −y 2 and dxy, we find that although both total density of states exhibit a similar V-shaped gaplike feature, only d x 2 −y 2 -wave pairing symmetry gives rise to robust intragap impurity resonance states reflected by the resonance peaks near the Fermi energy in the local density of states. These features can be readily probed by scanning tunneling microscopy experiments, and are proposed to shed light on the pairing symmetry and provide hints on the microscopic mechanism of unconventional superconductivity in the Ce-based heavy fermion superconductors.PACS numbers: 74.25.Jb, 74.20.Pq, 74.50.+r, 74.62.En Recently, the interplay of antiferromagnetic (AF) order and unconventional superconductivity in Ce-based heavy fermion superconductors CeMIn 5 (M = Co, Rh, Ir) have been intensively studied 1-13 . For instance, CeCoIn 5 is a superconductor with the highest transition temperature T c ≈ 2.3K whereas CeRhIn 5 orders antiferromagnetically below T N ≈ 3.7K 9 . On the other hand, superconductivity is observed in the latter compound by application of pressure whereas unconventional superconductivity in CeCoIn 5 9 emerges in close proximity to an AF quantum critical point as in the cuprates and pnictides superconductors. Moreover, neutron scattering experiments indicate strong AF quasielastic excitations at wavevectors Q= ( 1 2 1 2 1 2 ) and equivalent positions in the paramagnetic regime. When entering the superconducting state, the magnetic excitations spectra by inelastic neutron scattering show the appearance of a sharp spin resonance 10 . These finding underline the analogy to the cuprate high-temperature superconductors 14,15 and the new iron superconductors 16,17 , where AF spin fluctuations may actually mediate unconventional superconductivity.So far, the superconducting pairing symmetry in CeCoIn 5 has been discussed from both experimental and theoretical sides, it has not yet been determined unambiguously. Soon after the discovery of CeCoIn 5 material, its Fermi surface (FS) has been studied in detail by quantum oscillation, which consists of nearly cylindrical one and small ellipsoidal ones. The cylindrical sheets reflect quasi-two-dimensional(2D) character, by analogy with cuprates. Then the pairing state in CeCoIn5 has been widely believed to be unconventional with d-wave symmetry with vertical line node. The early thermal conductivity and specific heat have been measured in a rotating magnetic field, and gave a controversial result on whether CeCoIn 5 has a superconducting gap with d Although the ideally field-angle resolved thermal conductivity and specific heat measurements can give the position of the nodes, they rely on the ability to accurately model the true electronic structure, which in fact is poorly understood in heavy fermi...

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“…Previous dHvA studies of CeRhIn 5 (x = 0) [5,4,6] and CeCoIn 5 (x = 1) [7] have established the Fermi surface of both compounds to have a common geometry consisting of: (1) a heavy quasi-2D cylindrical sheet giving rise to orbits labeled α i , (2) a heavy and more complex quasi-2D sheet with orbits β i , and (3) several small, light pockets with corresponding low-frequency orbits [7]. Band structure calculations [8] compare well with these observations if the Ce 4f electrons are treated as localized in CeRhIn 5 and itinerant in CeCoIn 5 , a picture further supported by comparisons to the non-f -electron analogue LaRhIn 5 [5,9].…”

Section: Methodsmentioning

confidence: 99%

Observation of de Haas-van Alphen oscillations across the phase diagram of CeRh_1-xCo_xIn₅

Sutherland

Goh

O’Farrell

et al. 2009

J. Phys.: Conf. Ser.

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Abstract. The evolution of the Fermi surface of CeRh1−xCoxIn5 was studied as a function of Co concentration x via measurements of the de Haas-van Alphen effect. We observe several quantum oscillation frequencies in single crystal samples prepared with values of x spanning the alloy phase diagram. By tracking the evolution of these frequencies as the applied magnetic field is rotated, we establish that the Fermi surface undergoes an abrupt change in shape when x ≃ 0.4. This is well away from the quantum critical concentration x ≃ 0.8 where antiferromagnetic order gives way to paramagnetism.

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Electronic structure ofCeRhIn5:de Haas–van Alphen and energy band calculations

Cited by 100 publications

References 11 publications

Recent Advances in the Magnetism and Superconductivity of Heavy Fermion Systems

Recent Advances in the Magnetism and Superconductivity of Heavy Fermion Systems

Nonmagnetic impurity resonance states as a test of superconducting pairing symmetry in CeCoIn5

Observation of de Haas-van Alphen oscillations across the phase diagram of CeRh_1-xCo_xIn₅

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Electronic structure ofCeRhIn5:de Haas–van Alphen and energy band calculations

Cited by 100 publications

References 11 publications

Recent Advances in the Magnetism and Superconductivity of Heavy Fermion Systems

Recent Advances in the Magnetism and Superconductivity of Heavy Fermion Systems

Nonmagnetic impurity resonance states as a test of superconducting pairing symmetry in CeCoIn5

Observation of de Haas-van Alphen oscillations across the phase diagram of CeRh1-xCoxIn5

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Observation of de Haas-van Alphen oscillations across the phase diagram of CeRh_1-xCo_xIn₅