High-magnetic-field thermal expansion and elastic properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Ce</mml:mi><mml:mi mathvariant="normal">Rh</mml:mi><mml:msub><mml:mi mathvariant="normal">In</mml:mi><mml:mn>5</mml:mn></mml:msub></mml:mrow></mml:math>

Correa, V. F.; Okraku, W.E.; Betts, J. B.; Migliori, A.; Sarrao, J. L.; Lacerda, A.

doi:10.1103/physrevb.72.012407

Cited by 9 publications

(11 citation statements)

References 28 publications

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“…In Figure 1, we present results of the magnetic susceptibility of CeRhIn 5 at various temperatures which demonstrate clear signals of dHvA oscillations. Besides the oscillations, a tiny jump around 2.5 T denoted by B M is detected at low temperatures, which corresponds to the first-order metamagnetic transition reported previously [23][24][25][26]. In addition, a step in the signal is observed around B c 50 T, which is consistent with the presence of an AF to PM phase transition.…”

Section: Pulsed Magnetic Field B Asupporting

confidence: 85%

Magnetic field-induced Fermi surface reconstruction and quantum criticality in

Jiao

Weng

Smidman

et al. 2017

Philosophical Magazine

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We present detailed results of the field evolution of the de Haas-van Alphen (dHvA) effect in CeRhIn 5. A magnetic fieldinduced reconstruction of the Fermi surface is clearly shown to occur inside the antiferromagnetic state, in an applied field of around B * 30 T, which is evidenced by the appearance of several new dHvA branches. The angular dependence of the dHvA frequencies reveals that the Fermi surfaces of CeRhIn 5 at B > B * and CeCoIn 5 are similar. The results suggest that the Ce-4f electrons in CeRhIn 5 become itinerant at B > B * due to the Kondo effect, prior to the field-induced quantum critical point (QCP) at B c0 50 T. The electronic states at the field-induced QCP are therefore different from that of the pressure-induced QCP where a dramatic Fermi surface reconstruction occurs exactly at the critical pressure, indicating that multiple types of QCP may exist in CeRhIn 5 .

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Section: Pulsed Magnetic Field B Asupporting

confidence: 85%

Magnetic field-induced Fermi surface reconstruction and quantum criticality in

Jiao

Weng

Smidman

et al. 2017

Philosophical Magazine

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“…Below 8 K,

changes sign, and a peak appears at

K, signaling the second-order phase transition from a paramagnetic to an antiferromagnetic phase. This result is in qualitative agreement with the peak at

seen by capacitance dilatometry at zero pressure [ 25 , 26 ] and with the phase diagram shown in Figure 2 a where

K at

GPa. The magnitude of the peak at

, however, is two- to three-times smaller than the value obtained using a capacitance dilatometer at atmospheric pressure.…”

Section: Resultssupporting

confidence: 90%

“…Secondly, the slope

at 0.5 GPa ( Figure 2 a) is notably less than at lower pressures. By Ehrenfest’s relation for a second order phase transition, the weaker slope necessarily implies a smaller thermal expansion anomaly at

, if the change in specific heat across the phase boundary is similar to that at atmospheric pressure, which it is [ 25 , 26 ]. Hence, the temperature dependence of

is reliable although its absolute value may not be quantitative.…”

Section: Resultsmentioning

confidence: 99%

An FBG Optical Approach to Thermal Expansion Measurements under Hydrostatic Pressure

Rosa

Thomas

Balakirev

et al. 2017

Sensors

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We report on an optical technique for measuring thermal expansion and magnetostriction at cryogenic temperatures and under applied hydrostatic pressures of 2.0 GPa. Optical fiber Bragg gratings inside a clamp-type pressure chamber are used to measure the strain in a millimeter-sized sample of CeRhIn5. We describe the simultaneous measurement of two Bragg gratings in a single optical fiber using an optical sensing instrument capable of resolving changes in length [dL/L=(L−L0)/L0] on the order of 10−7. Our results demonstrate the possibility of performing high-resolution thermal expansion measurements under hydrostatic pressure, a capability previously hindered by the small working volumes typical of pressure cells.

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“…At high magnetic field near H c2 (0) a new superconducting phase was observed which may be the first example of a Fulde-Ferrel-Ovchinnikov-Larkin (FFLO) state in an inorganic superconductor [15,16,17]. However, this new state cannot be interpreted as a stack of spatially homogeneous superconducting and normal regions [18].The high magnetic field phase diagram of CeRhIn 5 at ambient pressure has been studied by specific heat [19], magnetization [20,21], and thermal expansion measurements [22]. For fields in the ab-plane, T N is slightly increasing with increasing field up to 3.9 K. The magnetization in the ab-plane shows a small step-like increase near H ⋆ m = 2 T at low temperatures, due to a tiny change in the magnetic structure presumably associated with a reorientation of the helix and/or a change from an incommensurate to a commensurate structure.…”

mentioning

confidence: 99%

Coexistence of antiferromagnetism and superconductivity inCeRhIn5under high pressure and magnetic field

et al. 2006

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We report on detailed ac calorimetry measurements under high pressure and magnetic field of CeRhIn5. Under hydrostatic pressure the antiferromagnetic order vanishes near p ⋆ c = 2 GPa due to a first order transition. Superconductivity is found for pressures above 1.5 GPa inside the magnetic ordered phase. However, the superconductivity differ from the pure homogeneous superconducting ground state above 2 GPa. The application of an external magnetic field H ab induces a transition inside the superconducting state above p ⋆ c which is strongly related to the re-entrance of the antiferromagnetism with field. This field-induced supplementary state vanishes above the quantum critical point in this system. The analogy to CeCoIn5 is discussed.The discovery of the cerium heavy fermion CeM In 5 (M = Co, Ir, Rh) systems opened a new route to investigate the interplay of magnetic fluctuations, unconventional superconductivity (SC) and antiferromagnetic order (AF) in strongly correlated electron systems in the vicinity of a quantum phase transition (QPT). While CeCoIn 5 and CeIrIn 5 are unconventional superconductors at ambient pressure (p)with most probably d-wave symmetry below T c = 2.2 K and T c = 0.4 K and suited very close to a QPT, CeRhIn 5 offers the possibility to tune a heavy fermion system from AF to SC as function of pressure [1,2,3]. At ambient pressure CeRhIn 5 orders antiferromagnetically below the Néel temperature T N = 3.8 K in an incommensurate helical structure with propagation vector Q = (1/2, 1/2, 0.297) and a staggered moment of about 0.8 µ B [4]. Neutron scattering experiments under pressure showed that this magnetic structure is almost unchanged under pressure up to the highest investigated pressure of 1.7 GPa [5]. SC has been reported for pressures above 0.9 GPa on the basis of resistivity measurements. Nuclear-quadrupole resonance (NQR) measurements in combination with ac susceptibility have shown that SC and AF coexist on a microscopic scale in the pressure range from p = 1.6 − 1.75 GPa [6]. The spin-lattice relaxation rate shows at low temperature an unexpected 1/T 1 ∝ T dependence which gives evidence for a gap-less nature of the low-lying excitations. A pure superconducting ground-state with line nodes in the gap is attained for p > 2 GPa and 1/T 1 ∝ T 3 has been reported [7]. Previous detailed specific heat measurements under hydrostatic pressure give evidence that the magnetic transition disappears by a first order transition at p The application of an external magnetic field H offers a second parameter to influence the competition between AF and SC. Recently it was shown that a magnetic QCP can be achieved in CeCoIn 5 by the application of a magnetic field of the order of the upper critical field H c2 (0) [10,11]. H c2 (T ) in this compound is strongly Pauli limited and the transition becomes first order at low temperatures [12,13,14]. At high magnetic field near H c2 (0) a new superconducting phase was observed which may be the first example of a Fulde-Ferrel-Ovchinnikov-Larkin (FFLO) state...

show abstract

High-magnetic-field thermal expansion and elastic properties ofCeRhIn5

Cited by 9 publications

References 28 publications

Magnetic field-induced Fermi surface reconstruction and quantum criticality in

Magnetic field-induced Fermi surface reconstruction and quantum criticality in

An FBG Optical Approach to Thermal Expansion Measurements under Hydrostatic Pressure

Coexistence of antiferromagnetism and superconductivity inCeRhIn5under high pressure and magnetic field

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