High pressure effects on the electrical resistivity behavior of the Kondo lattice, YbPd2Si2

Nakano, Tatsuya; Hedo, Masato; Uwatoko, Yoshiya; Sampathkumaran, E. V.

doi:10.1016/j.ssc.2004.07.064

Cited by 8 publications

(6 citation statements)

References 18 publications

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“…47 The transformation from Fermi liquid ͑Kondo lattice͒ to a single-ion Kondo effect region was observed as well as in the case applying external pressure, 11 and a decrease in the mean valence of observed by magnetic susceptibility. This confirms that negative chemical pressure and external pressure cause opposite effects to the Yb valence in YbPd 2 Si 2 .…”

Section: Discussionmentioning

confidence: 79%

“…No phase transition down to 45 mK was observed in the resistivity measurement and the QCP in the vicinity of 0-1 GPa has been suggested. 11 The effective magnetic moment ef f = 4.5Ϯ 0.1 B is larger than that of YbNi 2 Ge 2 , 12,13 but slightly smaller than that of Yb 3+ . The crystal electric field ͑CEF͒ effect of YbPd 2 Si 2 was extensively studied.…”

Section: Introductionmentioning

confidence: 83%

“…46 Recently Ovsyannikov et al 18 reported a phase transition around 6 Ϯ 0.5 GPa by measuring of thermoelectric and dilatometric properties. At 1 GPa, Nakano et al 11 suggested the onset of magnetic ordering at 1 GPa below 0.5 K by resistivity, hinting at a QCP between 0 and 1 GPa while in YbNi 2 Ge 2 the Energy transfer (eV)…”

Section: Discussionmentioning

confidence: 99%

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Temperature and pressure-induced valence transitions inYbNi2Ge2andYbPd2
Yamaoka
¹
,
Jarrige
²
,
Tsujii
³

et al. 2010
Phys. Rev. B
50
6
56
0
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We have measured the temperature and pressure-induced Yb valence transitions in tetragonal YbNi 2 Ge 2 and YbPd 2 Si 2 using x-ray absorption spectroscopy in the partial fluorescence yield mode and resonant x-ray emission spectroscopy. A temperature dependence of the Yb valence on the order of 0.1 has been measured, consistent with the magnetic-susceptibility study. The crossover from the low-temperature state having a stronger mixed valence to a high-temperature local moment behavior is analyzed within the Anderson impurity model. Pressure-induced second-order valence transitions are observed for both compounds with a more gradual transition in YbPd 2 Si 2 than that of YbNi 2 Ge 2 . The mean valences are slightly less than 3+ at ambient pressure but increase with applying pressure. Small variations in the Yb valence on the order of 0.03-0.05 can result in drastic change in the physical properties such as magnetic order and transport properties. Our results show that the Yb valence is noninteger around the quantum critical point.

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Section: Discussionmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 83%

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Temperature and pressure-induced valence transitions inYbNi2Ge2andYbPd2
Yamaoka
¹
,
Jarrige
²
,
Tsujii
³

et al. 2010
Phys. Rev. B
50
6
56
0
View full text Add to dashboard Cite

show abstract

“…In contrast to Ce compounds, where magnetic ordering is suppressed by pressure, in Yb systems, increasing pressure can tune the system from a nonmagnetic state to a magnetic one [8,12]. There are only a few examples of the pressure induced, nonmagnetic-to-magnetic phase transitions in Yb compounds [2,5,6,[23][24][25][26][27][28] and, so far, superconductivity has been reported in only two materials [11,29].…”

Section: Introductionmentioning

confidence: 99%

Collapse of the Kondo state and ferromagnetic quantum phase transition in YbFe2Zn20

Kaluarachchi

Ying

et al. 2018

Phys. Rev. B

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We present the electrical resistivity data under application of pressures up to ∼ 26 GPa and down to 50 mK temperatures on YbFe2Zn20. We find a pressure induced magnetic phase transition with an onset at pc = 18.2± 0.8 GPa. At ambient pressure, YbFe2Zn20 manifests a heavy fermion, nonmagnetic ground state and the Fermi liquid behavior at low temperatures. As pressure is increased, the power law exponent in resistivity, n, deviates significantly from Fermi liquid behavior and tends to saturate with n = 1 near pc. A pronounced resistivity maximum, Tmax, which scales with Kondo temperature is observed. Tmax decreases with increasing pressure and flattened out near pc indicating the suppression of Kondo exchange interaction. For p > pc, Tmax shows a sudden upward shift, most likely becoming associated with crystal electric field scattering. Application of magnetic field for p > pc broadens the transition and shifts it toward the higher temperature, which is a typical behavior of the ferromagnetic transition. The magnetic transition appears to abruptly develop above pc, suggesting probable first-order (with changing pressure) nature of the transition; once stabilized, the ordering temperature does not depend on pressure up to ∼ 26 GPa. Taken as a whole, these data suggest that YbFe2Zn20 has a quantum phase transition at pc = 18.2 GPa associated with the avoided quantum criticality in metallic ferromagnets.

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“…5,6 Therefore, one observes pressure-induced magnetism in nonmagneticYb compounds, e.g., Yb 2 Ni 2 Al, 7 YbCu 2 Si 2 , 8 and YbPd 2 Si 2 . 9 More interesting is the observation of complex phase diagrams associated with unusual ground states in Yb-based HF compounds located near a QCP, such as YbRh 2 Si 2 (T N = 70 mK) (Refs. 10,11) and a frustrated antiferromagnet YbAgGe (T N = 0.8 K).…”

Section: Introductionmentioning

confidence: 99%

Interplay between crystal electric field and magnetic exchange anisotropies in the heavy-fermion antiferromagnet YbRhSb under pressure

et al. 2012

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We report the pressure effect on the magnetic ground state of the heavy-fermion (HF) canted antiferromagnet YbRhSb (orthorhombic ε-TiNiSi-type) by means of magnetization and resistivity measurements using a single crystal. At ambient pressure, this compound undergoes a transition at T M1 = 2.7 K into a canted antiferromagnetic (AF) state with a small spontaneous moment of 3 × 10 −3 μ B /Yb. With increasing pressure P above 1 GPa, another magnetic transition occurs at T M2 above T M1 , and T M1 (P ) has a deep minimum of 2.5 K at 1.7 GPa. For P 2 GPa, the canted AF structure changes to a ferromagnetic (FM) one, where a large moment 0.4 μ B /Yb lies in the orthorhombic b-c plane and a metamagnetic transition occurs at B || a = 1.5 T. This unusual FM state below T M3 ∼ = 4.3 K is ascribed to the balance between the single-ion crystalline electric field (CEF) anisotropy with easy direction || a and the intersite exchange interaction with easy b-c plane. Furthermore, we have investigated the pressure dependence of T M3 up to 20.4 GPa using electrical resistivity measurements. The structural stability under pressures up to 19 GPa was examined by x-ray diffraction. We find that T M3 above 2.5 GPa steeply increases up to about 7 K, showing a broad maximum and then slightly decreases with increasing pressure above 8 GPa, while the structure remains unchanged. We attribute the enhancement of T M3 above 2.5 GPa to an increase of the CEF anisotropy with respect to magnetic exchange anisotropy. Finally, we compare and discuss the volume dependence of magnetic phase diagram of YbRhSb with the isostructural HF ferromagnet YbNiSn.

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High pressure effects on the electrical resistivity behavior of the Kondo lattice, YbPd2Si2

Abstract: We report the influence of external high-pressure (P= up to 8 GPa) on the temperature (T) dependence of electrical resistivity (ρ)-based Kondo lattice, YbPd 2 Si 2 , which does not undergo magnetic ordering under ambient pressure condition.

Cited by 8 publications

References 18 publications

Temperature and pressure-induced valence transitions inYbNi2Ge2andYbPd2
Yamaoka
¹
,
Jarrige
²
,
Tsujii
³

et al. 2010
Phys. Rev. B
50
6
56
0
View full text Add to dashboard Cite

Temperature and pressure-induced valence transitions inYbNi2Ge2andYbPd2
Yamaoka
¹
,
Jarrige
²
,
Tsujii
³

et al. 2010
Phys. Rev. B
50
6
56
0
View full text Add to dashboard Cite

Collapse of the Kondo state and ferromagnetic quantum phase transition in YbFe2Zn20

Interplay between crystal electric field and magnetic exchange anisotropies in the heavy-fermion antiferromagnet YbRhSb under pressure

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High pressure effects on the electrical resistivity behavior of the Kondo lattice, YbPd2Si2

Abstract: We report the influence of external high-pressure (P= up to 8 GPa) on the temperature (T) dependence of electrical resistivity (ρ)-based Kondo lattice, YbPd 2 Si 2 , which does not undergo magnetic ordering under ambient pressure condition.

Cited by 8 publications

References 18 publications

Temperature and pressure-induced valence transitions inYbNi2Ge2andYbPd2Yamaoka1, Jarrige2, Tsujii3 et al. 2010Phys. Rev. B506560View full textAdd to dashboardCite

Temperature and pressure-induced valence transitions inYbNi2Ge2andYbPd2Yamaoka1, Jarrige2, Tsujii3 et al. 2010Phys. Rev. B506560View full textAdd to dashboardCite

Collapse of the Kondo state and ferromagnetic quantum phase transition in YbFe2Zn20

Interplay between crystal electric field and magnetic exchange anisotropies in the heavy-fermion antiferromagnet YbRhSb under pressure

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Resources

About

Temperature and pressure-induced valence transitions inYbNi2Ge2andYbPd2
Yamaoka
¹
,
Jarrige
²
,
Tsujii
³

et al. 2010
Phys. Rev. B
50
6
56
0
View full text Add to dashboard Cite

Temperature and pressure-induced valence transitions inYbNi2Ge2andYbPd2
Yamaoka
¹
,
Jarrige
²
,
Tsujii
³

et al. 2010
Phys. Rev. B
50
6
56
0
View full text Add to dashboard Cite