Topic
Metamagnetism
About: Metamagnetism is a research topic. Over the lifetime, 2023 publications have been published within this topic receiving 38108 citations.
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08 May 2006
TL;DR: In this paper, the microstructure of rare-earth transition metal compounds is modified by varying the preparation of the rare earth transition metal compound by induction melting and, alternatively, by arc melting and at different annealing route afterwards.
Abstract: By varying the preparation, the microstructure of the rare-earth transition metal compound is modified. The samples were prepared by induction melting and, alternatively, by arc melting and at different annealing route afterwards. The occurring microstructure exhibits a phase separation within the hexagonal CaCu5-type structure. In a certain sample, a high-field transition was found. The temperature dependence of the transition field excludes the possibility of an itinerant electron metamagnetism. It could be shown that the microstructure is important for the field induced high-field transition
01 Jan 1983
TL;DR: In this paper, the magnetization process is described in terms of a spin fluctuation spectrum, in clear contrast with conventional approaches based on the Hartree-Fock approximation assuming the fine structure of the density of states curve.
TL;DR: In this paper , the authors used quasiparticle interference, magnetization measurements, and dilatometry in vector magnetic fields to establish the interplay between magnetism, spin-orbit coupling, microscopic electronic structure, and crystal structure of the trilayer ruthenate.
Abstract: Metamagnetic materials enable control of the ground state through applied magnetic fields. Understanding the microscopic origin of metamagnetism promises tuneability for new technological functionalities. Here, the authors use quasiparticle interference, magnetization measurements, and dilatometry in vector magnetic fields to establish the interplay between magnetism, spin-orbit coupling, microscopic electronic structure, and crystal structure of the trilayer ruthenate Sr${}_{4}$Ru${}_{3}$O${}_{10}$. These results reveal a surprising anisotropy in the properties of the material, highlighting the role of spin-orbit coupling.
22 May 2023
TL;DR: In this article , the effects of a transverse magnetic field in a Kondo lattice model with two $f$ orbitals interacting with the conduction electrons were studied, where only electrons in the localized orbital 1 interact through exchange interaction with the neighboring ones, while electrons in orbital 2 are coupled with conduction electron through Kondo interaction, and two situations can be obtained when Kondo coupling vanishes: first, a metamagnetic transition occurs just before or at the same time of the fully polarized state, and second, when the spins are already pointing out along the magnetic field.
Abstract: In this work, we study the effects of a transverse magnetic field in a Kondo lattice model with two $f$ orbitals interacting with the conduction electrons. The $f$ electrons that are present on the same site interact through Hund's coupling, while on neighboring sites they interact through intersite exchange. We consider here that part of $f$ electrons are localized (orbital 1) while another part (orbital 2) are delocalized, as it is frequent in uranium systems. Then, only electrons in the localized orbital 1 interact through exchange interaction with the neighboring ones, while electrons in orbital 2 are coupled with conduction electrons through a Kondo interaction. We obtain a solution where ferromagnetism and Kondo effect coexist for small values of an applied transverse magnetic field for $T\rightarrow0$. Increasing the transverse field, two situations can be obtained when Kondo coupling vanishes: first, a metamagnetic transition occurs just before or at the same time of the fully polarized state, and second, a metamagnetic transition occurs when the spins are already pointing out along the magnetic field.