Quantum tricritical point in the temperature-pressure-magnetic field phase diagram of CeTiGe3

2017/11/10 by Udhara S. Kaluarachchi, Valentin Taufour, Sergey L. Bud’ko +3 · 29 citations
Chemistry · Materials Science · Physics and Astronomy · #Ambient pressure #Antiferromagnetism #Condensed matter physics #Ferromagnetism #Inorganic Chemistry and Materials #Iron-based superconductors research #Materials science #Phase (matter) #Phase diagram #Phase transition #Physics #Quantum critical point #Quantum mechanics #Quantum phase transition #Rare-earth and actinide compounds #Thermodynamics #Tricritical point #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.97.045139

published in Physical review. B./Physical review. B 97(4) (American Physical Society)

arxiv created 2017/11/10 · openalex created_date 2017/11/17 · openalex publication_date 2018/01/22 · arxiv updated 2018/01/31 · openalex updated_date 2026/08/05

Abstract

We report the temperature-pressure-magnetic-field phase diagram of the ferromagnetic Kondo-lattice CeTiGe₃ determined by means of electrical resistivity measurements. Measurements up to \ensuremath∼5.8\phantom\rule0.16em0exGPa reveal a rich phase diagram with multiple phase transitions. At ambient pressure, CeTiGe₃ orders ferromagnetically at T_C=14 K. Application of pressure suppresses T_C, but a pressure-induced ferromagnetic quantum criticality is avoided by the appearance of two new successive transitions for p>4.1 GPa that are probably antiferromagnetic in nature. These two transitions are suppressed under pressure, with the lower-temperature phase being fully suppressed above 5.3 GPa. The critical pressures for the presumed quantum phase transitions are p₁\ensuremath≅4.1 GPa and p₂\ensuremath≅5.3 GPa. Above 4.1 GPa, application of magnetic field shows a tricritical point evolving into a wing-structure phase with a quantum tricritical point at 2.8 T at 5.4 GPa, where the first-order antiferromagnetic-ferromagnetic transition changes into the second-order antiferromagnetic-ferromagnetic transition.

Citations

• Metallic Quantum Ferromagnets
• Tricritical Behavior in Itinerant Quantum Ferromagnets
• Hydrostatic limits of 11 pressure transmitting media
• Nonanalytic behavior of the spin susceptibility in clean Fermi systems
• First Order Transitions and Multicritical Points in Weak Itinerant Ferromagnets
• Solidification and loss of hydrostaticity in liquid media used for pressure measurements
• Field-temperature phase diagram and entropy landscape ofCeAuSb2
• Wing structure in the phase diagram of the Ising ferromagnet URhGe close to its tricritical point investigated by angle-resolved magnetization measurements
• Fermi Surface Properties, Metamagnetic Transition and Quantum Phase Transition of CeRu2Si2 and Its Alloys Probed by the dHvA Effect