Possible magnetic-field-induced Lifshitz transition in CeBiPt

Wosnitza, J.; Goll, G.; Bartkowiak, M.; Bergk, B.; Bianchi, A.; Löhneysen, H. v.; Yoshino, T.; Takabatake, Toshiro

doi:10.1016/j.physb.2007.10.288

Cited by 8 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, this usually requires considerable variations of the electron density that for bulk materials can only be achieved by the experimentally inconvenient preparation of numerous samples with different chemical compositions [4][5][6][7][8][9]. Alternatively, the Fermi surface can be deformed by exposing the sample to extreme conditions like high pressures [2,10,11] or strong magnetic fields [12,13].…”

Section: Introductionmentioning

confidence: 99%

Tunable Fermi surface topology and Lifshitz transition in bilayer graphene

et al. 2015

View full text Add to dashboard Cite

a b s t r a c tBilayer graphene is a highly tunable material: not only can one tune the Fermi energy using standard gates, as in single-layer graphene, but the band structure can also be modified by external perturbations such as transverse electric fields or strain. We review the theoretical basics of the band structure of bilayer graphene and study the evolution of the band structure under the influence of these two external parameters. We highlight their key role concerning the ease to experimentally probe the presence of a Lifshitz transition, which consists in a change of Fermi contour topology as a function of energy close to the edges of the conduction and valence bands. Using a device geometry that allows the application of exceptionally high displacement fields, we then illustrate in detail the way to probe the topology changes experimentally using quantum Hall effect measurements in a gapped bilayer graphene system.

show abstract

Section: Introductionmentioning

confidence: 99%

Tunable Fermi surface topology and Lifshitz transition in bilayer graphene

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Similarly to topological insulators, topological superconductors have a full pairing gap in the bulk and gapless Majorana states on the edge of the surface [9][10][11]. Recently, it has been demonstrated that the electronic structure of the analogue system CePtBi is strongly dependent on the magnetic field, dopant concentration and temperature [12,13], and displays a tendency to Lifshitz transition [14]. Therefore, the CePdBi compound, which is isostructural to the series of REPdBi and REPtBi systems, seems to be very interesting.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical study of CePdBi

Goraus

Ślebarski²,

Fijałkowski³

2013

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

In this paper we present experimental results obtained for CePdBi by means of specific heat, electrical resistivity, magnetization and x-ray photoemission spectroscopy (XPS) measurements as well as fully relativistic band structure calculations. CePdBi crystallizes in MgAgAs structure and exhibits a transition to a magnetically ordered state at TM ~/= 2 K, and a subsequent transition to a superconducting state at TC ~/= 1.3 K. The superconducting phase has a significant critical field of about 1.4 T. The x-ray diffraction, resistivity and magnetic susceptibility data show that CePdBi exhibits significant atomic disorder, which is a typical feature of Heusler alloys. It seems that the superconducting transition is caused by part of the disordered phase, which from the Meissner shielding can be estimated to constitute ~8% of the sample volume. Due to atomic disorder, CePdBi exhibits metamagnetic behavior below TM and spin-glass-like features just above TM. Band structure calculations confirm the magnetic ground state of the CePdBi system and the possibility of formation of a narrow pseudogap near the Fermi level, which can also be seen in resistivity data. The spin-orbit interaction strongly influences the band structure and the shape of the semiconducting gap.

show abstract

“…For the ESR experiments two types of pulsed-field magnets, 8.5 MJ/70 T and 1.4 MJ/60 T, were used [47][48][49]. The 8.5 MJ/70 T coil has a bore with a diameter of 24 mm, outer diameter 320 mm and can produce magnetic fields up to 70 T. The calculated field homogeneity in the center of the field is better than 7 × 10 −4 over 1 cm DSV (diameter spherical volume).…”

Section: New Trends In High-field Thz Resonance Spectroscopymentioning

confidence: 99%

Resonance THz spectroscopy in high magnetic fields

Barra¹,

Goiran²,

Sessoli³

et al. 2013

Comptes Rendus. Physique

View full text Add to dashboard Cite

The employment of the high-magnetic-field resonance spectroscopy to probe magnetic excitations in the THz frequency range is reported. To illustrate the great potential of this technique in solid state physics, we present results of recent electron spin resonance studies of the quantum-tunneling effect in the single-molecule magnet Mn12tba and of the soliton-magnon crossover in Cu-PM, a spin-1/2 Heisenberg chain system with a staggered transverse field. Among others, we report on the successful use of the THz-range timedomain and free electron laser spectroscopy to study magnetic excitation spectra in pulsed magnetic fields.

show abstract

Possible magnetic-field-induced Lifshitz transition in CeBiPt

Cited by 8 publications

References 7 publications

Tunable Fermi surface topology and Lifshitz transition in bilayer graphene

Tunable Fermi surface topology and Lifshitz transition in bilayer graphene

Experimental and theoretical study of CePdBi

Resonance THz spectroscopy in high magnetic fields

Contact Info

Product

Resources

About