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We study the possibility to apply phenomenological approach to the description of magnetic transitions in UGe$_2$ at ambient pressure with the help of Landau free energy expanded to 8th order in magnetisation. The analysis shows that for…

Superconductivity · Physics 2021-08-24 Diana V. Shopova

We observe strongly nonlinear spin dynamics in ferro-/antiferro-magnetic multilayers, controlled by the number of bilayers in the system, layer thicknesses, as well as temperature, peaking in magnitude near the N\'eel point of the…

Mesoscale and Nanoscale Physics · Physics 2025-06-23 O. Busel , D. Polishchuk , A. Kravets , V. Korenivski

Magnetization and specific heat measurements on a UIrSi3 single crystal reveal Ising-like antiferromagnetism below T$_N$ = 41.7 K with easy magnetization direction along the c-axis of tetragonal structure. The antiferromagentic ordering is…

Triple-layered ruthenate Sr$_4$Ru$_3$O$_{10}$ shows a first-order itinerant metamagnetic transition for in-plane magnetic fields. Our experiments revealed rather surprising behavior in the low-temperature transport properties near this…

Strongly Correlated Electrons · Physics 2007-05-23 Zhiqiang Mao , Meng Zhou , Joe Hooper , Vladimir Golub , Charles J. O'Connor

We investigate the the itinerant ferromagnetism in a dipolar Fermi atomic system with the anisotropic spin-orbit coupling (SOC),which is traditionally explored with isotropic contact interaction.We first study the ferromagnetism transition…

We address the global magnetic phase diagram of Kondo lattice systems. Through the distinct Fermi surface properties of the various phases at zero temperature, we argue that the phase diagram supports two classes of quantum critical point.…

Strongly Correlated Electrons · Physics 2011-12-14 Qimiao Si

We construct a mean-field theory for itinerant ferromagnetism coexisting with a non-unitary superconducting state, where only the majority-spin band is gapped and contains line nodes, while the minority-spin band is gapless at the Fermi…

Superconductivity · Physics 2009-11-13 Jacob Linder , Iver B. Sperstad , Andriy Nevidomskyy , Mario Cuoco , Asle Sudbø

We study, using simulations the dynamical properties of complex ferromagnetic granular materials. The system of grains is modeled by a disordered two-dimensional lattice in which the grains are embedded, while the magnitude and direction of…

Mesoscale and Nanoscale Physics · Physics 2011-11-10 Ran Itay , Shlomo Havlin , Richard Berkovits

We construct a phase diagram of the parent compound Fe1+xTe as a function of interstitial iron x in terms of the electronic, structural, and magnetic properties. For a concentration of x < 10%, Fe1+xTe undergoes a "semimetal" to metal…

Strongly Correlated Electrons · Physics 2015-06-17 E. E. Rodriguez , D. A. Sokolov , C. Stock , M. A. Green , O. Sobolev , J. A. Rodriguez-Rivera , H. Cao , A. Daoud-Aladine

We examine the nature of the transition to the antiferromagnetically ordered state in the half-filled three-dimensional Hubbard model using the dual-fermion multiscale approach. Consistent with analytics, in the weak-coupling regime we find…

Strongly Correlated Electrons · Physics 2015-10-14 Daniel Hirschmeier , Hartmut Hafermann , Emanuel Gull , Alexander I. Lichtenstein , Andrey E. Antipov

A systematic study of the effect of magnetic field (h) on Hubbard model has been carried out at half filling within dynamical mean field theory. In agreement with previous studies, we find a zero temperature itinerant metamagnetic…

Strongly Correlated Electrons · Physics 2015-05-19 D. Parihari , N. S. Vidhyadhiraja , A. Taraphder

We consider the Lifshitz topological transitions and the corresponding changes in the galvanomagnetic properties of a metal from the point of view of the general classification of open electron trajectories arising on Fermi surfaces of…

Materials Science · Physics 2024-01-23 A. Ya. Maltsev

Based on numerical simulations, we demonstrate thermally induced magnetic switching in synthetic ferrimagnets composed of multilayers of rare-earth and transition metals. Our findings show that deterministic magnetization reversal occurs…

Mesoscale and Nanoscale Physics · Physics 2017-07-05 Stefan Gerlach , Laszlo Oroszlany , Denise Hinzke , Steffen Sievering , Sönke Wienholdt , Laszlo Szunyogh , Ulrich Nowak

The present paper discusses magnon-mediated superconductivity in ferromagnetic metals. The mechanism explains in a natural way the fact that the superconductivity in UGe_2, ZrZn_2 and URhGe is apparently confined to the ferromagnetic…

Superconductivity · Physics 2009-11-07 N. Karchev

We study a one-dimensional two-component atomic Fermi gas with an infinite intercomponent contact repulsion. It is found that adding an attractive resonant odd-wave interaction breaking the rotational symmetry one can make the ground state…

Quantum Gases · Physics 2016-07-13 Yuzhu Jiang , D. V. Kurlov , Xi-Wen Guan , F. Schreck , G. V. Shlyapnikov

We address the quantum-critical behavior of a two-dimensional itinerant ferromagnetic systems described by a spin-fermion model in which fermions interact with close to critical bosonic modes. We consider Heisenberg ferromagnets, Ising…

Strongly Correlated Electrons · Physics 2015-02-26 Matthias Einenkel , Hendrik Meier , Catherine Pépin , Konstantin B. Efetov

MnSi has been extensively studied for five decades, nonetheless detailed information on the Fermi surface (FS) symmetry is still lacking. This missed information prevented from a comprehensive understanding the nature of the magnetic…

Ferromagnetism is an iconic example of a first-order phase transition taking place in spatially extended systems and is characterized by hysteresis and the formation of domain walls. In this paper we demonstrate that an extended atomic…

Magnetic properties of the two-dimensional spin-polarized Fermi gas with dipole-dipole interaction are studied in the presence of external magnetic field at zero temperature. Within perturbation theory and the second quantization formalism,…

Mesoscale and Nanoscale Physics · Physics 2018-12-10 G. H. Bordbar , F. Pouresmaeeli , A. Poostforush

The electrical resistance, Hall resistance and thermoelectric power of the Ising-like antiferromagnet UIrSi3 were measured as functions of temperature and magnetic field. We have observed that the unequivocally different characters of…

Strongly Correlated Electrons · Physics 2019-07-24 Fuminori Honda , Jaroslav Valenta , Jan Prokleška , Jiří Pospíšil , Petr Proschek , Jiří Prchal , Vladimír Sechovský
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