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Proceedings ArticleDOI

High-Field Ultrasonic Study of CeIrIn<sub>5</sub>

22 May 2023-
TL;DR: In this article , the authors performed ultrasonic and temperature measurements under pulsed magnetic fields on CeIrIn$_5$ to investigate whether or not the origin of metamagnetic transition and field-induced Lifshitz transition was described by the anisotropic electronic ordering with crystal symmetry breaking.
Abstract: We performed ultrasonic and temperature measurements under pulsed magnetic fields on CeIrIn$_5$ to investigate whether or not the origin of metamagnetic transition and field-induced Lifshitz transition was described by the anisotropic electronic ordering with crystal symmetry breaking. We observed elastic anomalies with the negative magnetocaloric effects around the field-induced Lifshitz transition and the metamagnetic transition. On the other hand, the elastic anomalies appeared both in the transverse elastic constants $(C_{11} - C_{12})/2$ and $C_{66}$ in CeIrIn$_5$ while $(C_{11} - C_{12})/2$ showed significant elastic anomaly at the crystal symmetry breaking fields in CeRhIn$_5$. These results indicate that the anisotropic electronic ordering with crystal symmetry breaking is absent in high-magnetic fields in CeIrIn$_{5}$.
References
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Journal ArticleDOI
TL;DR: CeRhIn5 is a new heavy-electron material that crystallizes in a quasi-2D structure that can be viewed as alternating layers of CeIn3 and RhIn2 stacked sequentially along the tetragonal c axis that induces a first-order-like transition from an unconventional antiferromagnetic state to a superconducting state.
Abstract: CeRhIn5 is a new heavy-electron material that crystallizes in a quasi-2D structure that can be viewed as alternating layers of CeIn3 and RhIn2 stacked sequentially along the tetragonal c axis. Application of hydrostatic pressure induces a first-order-like transition from an unconventional antiferromagnetic state to a superconducting state with T(c) = 2.1 K.

748 citations

Journal ArticleDOI
TL;DR: In this paper, a charge selfconsistent combination of density-functional theory and dynamical mean-field theory (DMFT) was implemented in two full-potential methods, the augmented plane-wave and the linear muffin-tin orbital methods.
Abstract: We implemented the charge self-consistent combination of density-functional theory and dynamical mean-field theory (DMFT) in two full-potential methods, the augmented plane-wave and the linear muffin-tin orbital methods. We categorize the commonly used projection methods in terms of the causality of the resulting DMFT equations and the amount of partial spectral weight retained. The detailed flow of the dynamical mean-field algorithm is described, including the computation of response functions such as transport coefficients. We discuss the implementation of the impurity solvers based on hybridization expansion and an analytic continuation method for self-energy. We also derive the formalism for the bold continuous time quantum Monte Carlo method. We test our method on a classic problem in strongly correlated physics, the isostructural transition in Ce metal. We apply our method to the class of heavy-fermion materials ${\text{CeIrIn}}_{5}$, ${\text{CeCoIn}}_{5}$, and ${\text{CeRhIn}}_{5}$ and show that the $\text{Ce}\text{ }4f$ electrons are more localized in ${\text{CeRhIn}}_{5}$ than in the other two, a result corroborated by experiment. We show that ${\text{CeIrIn}}_{5}$ is the most itinerant and has a very anisotropic hybridization, pointing mostly toward the out-of-plane In atoms. In ${\text{CeRhIn}}_{5}$ we stabilized the antiferromagnetic DMFT solution below 3 K, in close agreement with the experimental Neel temperature.

424 citations

Journal ArticleDOI
TL;DR: In this paper, the surface properties of LaRhIn 5 and CeTIn 5 (T: Co, Rh and Ir) were studied via the de Haas-van Alphen (dHvA) experiment.
Abstract: We have studied Fermi surface properties of LaRhIn 5 and CeTIn 5 (T: Co, Rh and Ir) via the de Haas–van Alphen (dHvA) experiment. The Fermi surface of a non-4 f reference compound LaRhIn 5 is quasi...

246 citations

Journal ArticleDOI
TL;DR: In this paper, the magnetic properties of non-magnetic heavy-fermion compound CeIrIn 5 and an antiferromagnetic compound CeRhIn 5 with the tetragonal structure were studied.
Abstract: We studied the magnetic properties in a non-magnetic heavy-fermion compound CeIrIn 5 and an antiferromagnetic compound CeRhIn 5 with the tetragonal structure. High-field magnetization of CeIrIn 5 s...

103 citations

Journal ArticleDOI
TL;DR: Measurements of heat capacity and de Haas–van Alphen oscillations at low temperatures across a field-induced antiferromagnetic QCP in the heavy-fermion metal CeRhIn5 demonstrate that at least two distinct classes of QCP are observable in CeRh in a significant step toward the derivation of a universal phase diagram for QCPs.
Abstract: Conventional, thermally driven continuous phase transitions are described by universal critical behavior that is independent of microscopic details of a specific material. An analogous description is lacking for phase transitions that are driven at absolute zero temperature by a nonthermal control parameter. Classification of quantum-driven phase transitions is a fundamental but open problem that arises in diverse contexts and multiple classes of materials. Here we report the first observation, to our knowledge, of a sharp Fermi surface reconstruction while applying a strong magnetic field to suppress an antiferromagnetic transition to zero temperature. These experiments demonstrate that direct measurements of the Fermi surface can distinguish theoretically proposed models of quantum criticality and point to a universal description of quantum phase transitions.

80 citations