De Haas-van Alphen effect study of CeRu2Si2

Aoki, Haruyoshi; Takashita, M.; Uji, S.; Terashima, Taichi; Maezawa, K.; Settai, Rikio; Ōnuki, Yoshichika

doi:10.1016/0921-4526(94)00358-3

Cited by 23 publications

(31 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dHvA signal intensity with fields parallel to the [100] direction is mostly smaller than that with fields parallel to the [110] direction. However, we could observe rather clear signals of the α 1 , α 2 and α 3 oscillations for x around 0.5 -0.6.…”

Section: Fermi Surface Properties In High Concentration Alloys Of Cementioning

confidence: 81%

“…In §3. The oscillation which is probably attributed to the µ orbit in Fig with tilting the field direction from [100] to [110].…”

Section: Fermi Surface Properties Of Ceru 2 Si 2 Below and Above The mentioning

confidence: 95%

“…Here, we use mostly the notation β and γ , because even if the hole surfaces changed discontinuously, it is difficult to tell where they changed from the present experiment. and [110] directions. Here, F is the frequency of the alloy and F 0 is that of LaRu 2 Si 2 .…”

Section: Fermi Surface Properties In the Groundmentioning

confidence: 99%

See 2 more Smart Citations

Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu₂Si₂ and Its Alloys Probed by the dHvA Effect

2014

View full text Add to dashboard Cite

This article describes the Fermi surface properties of CeRu 2 Si 2 and its alloy systems CeRu 2 (Si x Ge 1−x ) 2 and Ce x La 1−x Ru 2 Si 2 studied by the de Haas -van Alphen (dHvA) effect. We pay particular attention to how the Fermi surface properties and the f electron state change with magnetic properties, in particular how they change associated with metamagnetic transition and quantum phase transition. After summarizing the

show abstract

Section: Fermi Surface Properties In High Concentration Alloys Of Cementioning

confidence: 81%

“…In §3. The oscillation which is probably attributed to the µ orbit in Fig with tilting the field direction from [100] to [110].…”

Section: Fermi Surface Properties Of Ceru 2 Si 2 Below and Above The mentioning

confidence: 95%

See 1 more Smart Citation

Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu₂Si₂ and Its Alloys Probed by the dHvA Effect

2014

View full text Add to dashboard Cite

show abstract

“…De Haas van Alphen (dHvA) and Shubnikov-de Haas (SdH) measurements have provided unambiguous evidence for this picture in heavy fermion compounds such as UPt 3 [14] and CeRu 2 Si 2 [15,16]. The metamagnetism in Sr 3 Ru 2 O 7 is expected to have a similar mechanism [5,6].…”

mentioning

confidence: 99%

Unusual Oscillation in Tunneling Magnetoresistance near a Quantum Critical Point inSr3Ru2O7

Hooper¹,

Mao²,

Perry³

et al. 2004

Phys. Rev. Lett.

View full text Add to dashboard Cite

We performed single electron tunneling measurements on bilayer ruthenate Sr 3 Ru 2 O 7 under magnetic fields at low temperature. We observe an unusual oscillation in tunneling magnetoresistance near the metamagnetic quantum phase transition at temperatures below 7 K. The characteristic features of this oscillation suggest that it is unrelated to traditional quantum oscillations caused by orbit quantization. In addition, tunneling spectra are found to change sharply in the low bias voltage range of V < 2mV near the transition field. These observations reveal that the Fermi surface of Sr 3 Ru 2 O 7 changes in a surprising way as the system undergoes strong critical fluctuations. In general, an itinerant metamagnetic transition is ascribed to a field-induced nonlinear exchange spin splitting of the Fermi surface (FS) [12,13] Here, we present experimental data obtained from single-electron tunneling measurements on Sr 3 Ru 2 O 7 , which reveal that the FS changes in a surprising way as this material undergoes the metamagnetic transition. We found that the tunneling magnetoresistance exhibits unusual oscillations with the change of FS.

show abstract

“…We notice that the factor 10 between the γ values is related to the ratio of their relevant energies, then we can compare their TEP response taking into account this factor 10 in temperature analysis.. Figure 12 shows the longitudinal and transverse TEP responses of CeRu 2 Si 2 at 290 mK by comparison to the CeRh 2 Si 2 ones at 3 K. At H m in CeRu 2 Si 2 a drastic change of the FS has been reported 3,29,30 and is associated with a strong increase of A and γ right at H m preserving a quasi constant Comparing to UCoAl that presents a first order metamagnetic transition from PM to FM, we notice that a sharp change of S at the transition also occurs in this compound 31 . Thus, the TEP signal in CeRh 2 Si 2 at H c is clearly governed by the strong first order nature of the metamagnetic transition while the FS crossover detected at H m in CeRu 2 Si 2 is characteristic of a sole Lifshitz transition.…”

Section: Discussionmentioning

confidence: 95%

Fermi surface instabilities inCeRh2Si2at high magnetic field and pressure

et al. 2015

View full text Add to dashboard Cite

We present thermoelectric power (TEP) studies under pressure and high magnetic field in the antiferromagnet CeRh2Si2 at low temperature. Under magnetic field, large quantum oscillations are observed in the TEP, S(H), in the antiferromagnetic phase. They suddenly disappear when entering in the polarized paramagnetic (PPM) state at Hc pointing out an important reconstruction of the Fermi surface (FS). Under pressure, S/T increases strongly of at low temperature near the critical pressure Pc, where the AF order is suppressed, implying the interplay of a FS change and low energy excitations driven by spin and valence fluctuations. The difference between the TEP signal in the PPM state above Hc and in the paramagnetic state (PM) above Pc can be explained by different FS. Band structure calculations at P = 0 stress that in the AF phase the 4f contribution at the Fermi level (EF ) is weak while it is the main contribution in the PM domain. By analogy to previous work on CeRu2Si2, in the PPM phase of CeRh2Si2 the 4f contribution at EF will drop.

show abstract

De Haas-van Alphen effect study of CeRu2Si2

Cited by 23 publications

References 9 publications

Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu₂Si₂ and Its Alloys Probed by the dHvA Effect

Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu₂Si₂ and Its Alloys Probed by the dHvA Effect

Unusual Oscillation in Tunneling Magnetoresistance near a Quantum Critical Point inSr3Ru2O7

Fermi surface instabilities inCeRh2Si2at high magnetic field and pressure

Contact Info

Product

Resources

About

De Haas-van Alphen effect study of CeRu2Si2

Cited by 23 publications

References 9 publications

Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu2Si2 and Its Alloys Probed by the dHvA Effect

Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu2Si2 and Its Alloys Probed by the dHvA Effect

Unusual Oscillation in Tunneling Magnetoresistance near a Quantum Critical Point inSr3Ru2O7

Fermi surface instabilities inCeRh2Si2at high magnetic field and pressure

Contact Info

Product

Resources

About

Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu₂Si₂ and Its Alloys Probed by the dHvA Effect

Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu₂Si₂ and Its Alloys Probed by the dHvA Effect