Evolution of Magnetic Order from the Localized to the Itinerant Limit

Mazzone, D. G.; Gauthier, Nicolas; Maimone, D. T.; Yadav, Ruchika; Bartkowiak, M.; Gavilano, J. L.; Raymond, Stéphane; Pomjakushin, Vladimir; Casati, Nicola; Révay, Zsolt; Lapertot, G.; Sibille, Romain; Kenzelmann, M.

doi:10.1103/physrevlett.123.097201

Cited by 8 publications

(7 citation statements)

References 46 publications

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“…These compounds crystallize in the centrosymmetric tetragonal structure with space group P 4/mmm 26 . The degeneracy of the tetragonal structure allows for two k-domains in the SDW phase, which are indeed confirmed 27 . The magnetic moments point along the tetragonal c-axis with an amplitude that is modulated along two orthogonal directions in the ab-plane (see Fig.…”

supporting

confidence: 62%

“…Single crystals of Nd doped CeCoIn 5 were grown in an In self-flux as described elsewhere27,37 .Resistivity measurements. Electrical properties of Nd 0.1 Ce 0.9 CoIn 5 were investigated by resistivity measurements conducted in an 11T horizontal magnet from Oxford instruments.…”

mentioning

confidence: 99%

“…Very recently, the emergence of itinerant antiferromagnetism has been observed in the large spin-orbit coupled multiband compounds Nd x Ce 1−x CoIn 5 with x ≤ 0.25 [26][27][28] . These compounds crystallize in the centrosymmetric tetragonal structure with space group P 4/mmm 26 .…”

mentioning

confidence: 99%

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Spin-orbit control of antiferromagnetic domains without a Zeeman coupling

Maimone,

Shen,

Gauthier

et al. 2023

Preprint

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Encoding information in antiferromagnetic (AFM) domains is a promising solution for the ever growing demand in magnetic storage capacity. What fundamentally enables ultrahigh density AFM-based spintronics is the absence of unintentional crosstalk between different domain states due to vanishing stray fields [1]. However, the absence of macroscopic magnetization is detrimental to the manipulation and detection of AFM domains. Disentangling the merits and disadvantages of small stray fields seemed so far unattainable. In this work, we report evidence for a new AFM domain selection mechanism based on the anisotropy in the susceptibility not induced by Zeeman energy terms, but by the relative orientation of the external magnetic field to the two perpendicularly oriented k-domains only. As a result, the charge transport response is controlled by the rotation of the magnetic field. In particular, a pronounced new anisotropic magnetoresistance effect is found in the AFM phase of bulk materials Nd(1-x)Ce(x) CoIn(5), due to differences in transport scattering rates for currents applied parallel and perpendicular to the spin-density wave modulation. Our results and the domain switching theory [2] indicate that this constitutes a new universal effect across multiband materials and thus provide a novel mechanism to control and detect AFM domains opening new perspectives for AFM sprintronics.

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confidence: 62%

mentioning

confidence: 99%

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Spin-orbit control of antiferromagnetic domains without a Zeeman coupling

Maimone,

Shen,

Gauthier

et al. 2023

Preprint

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“…These electrons possess localized character in CeRhIn 5 and itinerant character in CeIrIn 5 and CeCoIn 5 [11][12][13][14]. The degree of hybridization with the conduction electrons can be tuned by external parameters, such as pressure [15], chemical substitution [16][17][18][19], and magnetic field [20,21]. A change of the 4f -electron ground state has a significant impact on the electronic structure and, consequently, on the physical properties.…”

Section: Introductionmentioning

confidence: 99%

Anomalous quantum oscillations of CeCoIn5 in high magnetic fields

et al. 2021

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We report on magnetic-torque and resistivity measurements of the heavy-fermion compound CeCoIn5 in static magnetic fields up to 36 T and temperatures down to 50 mK. While quantum oscillations of the de Haas-van Alphen (dHvA) as well as the Shubnikov-de Haas (SdH) effect confirm the previously reported Fermi surfaces, an analysis of the field dependence reveals two anomalous features. The first is seen at about 22 T as a sharp anomaly in the resistivity for current applied along the a direction. The second appears as nonmonotonic field-dependent oscillation frequencies and amplitudes in both dHvA and SdH signals. This second feature emerges at about 28 T. This field is close to that of the nematic transition reported for CeRhIn5 and the proposed Lifshitz transition in CeIrIn5. We discuss possible common grounds of these latter features that might originate from the very similar band structures of these materials.

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“…The material studied, CeCoIn 5 , is a prototypical heavy fermion with a superconducting state below T c = 2.3 K [14]. Magnetic interactions, dependent on the degree of itineracy of the f -electrons [15], have been proposed to mediate to formation of Cooper pairs in this material [14] similar to other heavy-fermion materials [16,17]. Theoretical calculations with itinerant f -electrons indicate that the electronic structure of CeCoIn 5 is composed of three bands crossing the Fermi level E F [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Quantum well states in fractured crystals of the heavy fermion material CeCoIn$_5$

Gauthier,

Sobota,

Hashimoto

et al. 2020

Preprint

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Quantum well states appear in metallic thin films due to the confinement of the wave function by the film interfaces. Using angle-resolved photoemission spectroscopy, we unexpectedly observe quantum well states in fractured single crystals of CeCoIn5. We confirm that confinement occurs by showing that these states' binding energies are photon-energy independent and are well described with the phase accumulation model, commonly applied to quantum well states in thin films. This indicates that atomically-flat thin films can be formed by fracturing hard single crystals. For the two samples studied, our observations are explained by free-standing flakes with thicknesses of 206 and 101 Å. We extend our analysis to extract bulk properties of CeCoIn5. Specifically, we obtain the dispersion of a three-dimensional band centered at Γ along in-plane and out-of-plane momenta. We establish part of its Fermi surface, which corresponds to a hole pocket centered at Γ. We also reveal a change of its dispersion with temperature, a signature that may be caused by the Kondo hybridization.

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Evolution of Magnetic Order from the Localized to the Itinerant Limit

Cited by 8 publications

References 46 publications

Spin-orbit control of antiferromagnetic domains without a Zeeman coupling

Spin-orbit control of antiferromagnetic domains without a Zeeman coupling

Anomalous quantum oscillations of CeCoIn5 in high magnetic fields

Quantum well states in fractured crystals of the heavy fermion material CeCoIn$_5$

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