High pressure studies of cerium hexaboride

Brandt, N. B.; Moshchalkov, Victor; Pashkevich, S. N.; Vybornov, M.; Semenov, M. V.; Kolobyanina, T. N.; Konovalova, E.S.; Paderno, Yu. B.

doi:10.1016/s0038-1098(85)80029-6

Cited by 37 publications

(23 citation statements)

References 3 publications

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“…These are cubic heavy fermion compounds that were shown to undergo magnetic and quadrupolar transitions [35]. In CeB 6 , T N decreases, whereas T Q increases with pressure up to 10 kbars [34], which is a trend opposite to what we observe for Ce 3 Pd 20 Si 6 . For Ce 3 Pd 20 Ge 6 , T N and T Q at first increase and subsequently decrease with pressure [23].…”

Section: Quantum Criticality Under B and Pcontrasting

confidence: 75%

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Converse effect of pressure on the quadrupolar and magnetic transition inCe3Pd20Si6

et al. 2016

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The heavy fermion compound Ce 3 Pd 20 Si 6 displays unconventional quantum criticality as the lower of two consecutive phase transitions is fully suppressed by magnetic field. Here we report on the effects of pressure as an additional tuning parameter. Specific heat and electrical resistivity measurements reveal a converse effect of pressure on the two transitions, leading to the merging of both transitions at 6.2 kbars. The field-induced quantum criticality is robust under pressure tuning. We rationalize our findings within an extended version of the global phase diagram for antiferromagnetic heavy fermion quantum criticality.

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Section: Quantum Criticality Under B and Pcontrasting

confidence: 75%

“…We observe that the relative enhancement from 0 up to 0.8 T is . This phase diagram is distinctly different from the T -p phase diagrams reported for the related compounds CeB 6 [34] and Ce 3 Pd 20 Ge 6 [23]. These are cubic heavy fermion compounds that were shown to undergo magnetic and quadrupolar transitions [35].…”

Section: Quantum Criticality Under B and Pmentioning

confidence: 61%

Converse effect of pressure on the quadrupolar and magnetic transition inCe3Pd20Si6

et al. 2016

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“…To date there have been relatively few studies of the transport and magnetic properties of CeB 6 at high pressures [15,17,18]. Kobayashi et al [15] report that the prominent resistivity maximum in CeB 6 shifts from 3.6 K to ∼7 K at 13 GPa pressure, but there is no evidence for a transition to a Kondo insulating state as in SmB 6 [12].…”

Section: Introductionmentioning

confidence: 99%

Suppression of dense Kondo state in CeB6 under pressure

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Fabbris

et al. 2015

Physica B: Condensed Matter

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a b s t r a c tTo investigate whether the dense Kondo compound CeB 6 might evolve into a topological insulator under sufficient pressure, four-point electrical resistivity measurements have been carried out over the temperature range 1.3 K-295 K in a diamond anvil cell to 122 GPa. The temperature T max of the resistivity maximum initially increases slowly with pressure but disappears between 12 and 20 GPa. The marked changes observed under pressure suggest that a valence and/or structural transition may have occurred. Synchrotron x-ray diffraction measurements, however, fail to detect any change in crystal structure to 85 GPa. Although a transition into an insulating phase is not observed, this dense Kondo system is completely suppressed at 43 GPa, leaving behind what appears to be a conventional Fermi liquid metal.

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“…In such a situation, a new ordered phase could appear under pressure. As for CeB 6 , Brandt et al reported that T Q is enhanced but T N and the critical field from phase III to II, H III2II c are suppressed in a pressure region up to 1.1 GPa [3]. There, the unusual result was found that the suppression rate of H III2II c by pressure is larger than that of T N .…”

mentioning

confidence: 98%

“…In our calculation, we assumed dT oct =dP40 except dT Q =dP40 and dT N =dPo0 [3]. The first assumption was introduced by considering the enhancement of the crystal volume shrinkage with increasing magnetic field [5].…”

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confidence: 99%