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The magnetic phases induced by the interplay between disorder acting only on particles with a given spin projection ("spin-dependent disorder") and a local repulsive interaction is explored. To this end the magnetic ground state phase…

Strongly Correlated Electrons · Physics 2024-04-26 J. Skolimowski , D. Vollhardt , K. Byczuk

We have studied the magnetization of the recently discovered heavy fermion superconductor UTe$_2$ up to 56 T in pulsed-magnetic fields. A first-order metamagnetic transition has been clearly observed at $H_{\rm m}$ =34.9 T when the magnetic…

The body-centered-tetragonal antiferromagnet EuGa$_4$ exhibits A-type antiferromagnetic order below its N\'eel temperature $T_{\rm N} = 16.4$ K in magnetic field $H = 0$ where the moments are ferromagnetically aligned in the $ab$-plane with…

Strongly Correlated Electrons · Physics 2023-03-22 Santanu Pakhira , David C. Johnston

Our study sample is a superconducting bi-dimensional octagon with different boundary conditions immersed in a magnetic external field H. The boundary conditions are simulated by considering different values of the deGennes extrapolation…

Superconductivity · Physics 2022-05-11 C. A. Aguirre , Julian Faundez , J. Barba-Ortega

We report the temperature dependencies of the upper critical fields $H_{c\text{2}}^{\text{c}}(T)$ parallel to the c-axis and $H_{c\text{2}}^{\text{ab}}(T)$ parallel to the ab-plane of single crystalline CaKFe$_4$As$_4$ inferred from the…

Magnetism of Cu$_2$(OH)$_3$Br single crystals based on a triangular lattice is studied by means of magnetic susceptibility, pulsed-field magnetization, and specific heat measurements. There are two inequivalent Cu$^{2+}$ sites in an…

Strongly Correlated Electrons · Physics 2019-09-04 Z Y Zhao , H L Che , R Chen , J F Wang , X F Sun , Z Z He

The magnetic phase diagram of CuFeO2 as a function of applied magnetic field and temperature is thoroughly explored and expanded, both for magnetic fields applied parallel and perpendicular to the material's c-axis. Pulsed field…

Materials Science · Physics 2015-05-18 Tom T. A. Lummen , Cornelius Strohm , Harison Rakoto , Paul H. M. van Loosdrecht

Magnetic and dielectric properties of \aa kermanite Ca$_2$CoSi$_2$O$_7$ single crystals were investigated in pulsed high magnetic fields. In magnetic fields along the $c$ axis, this material shows a magnetization plateau in a wide range of…

Strongly Correlated Electrons · Physics 2015-06-22 Mitsuru Akaki , Hideki Kuwahara , Akira Matsuo , Koichi Kindo , Masashi Tokunaga

The influence of hydrostatic pressure and ab-plane strain on the magnetic structure of FeTe is investigated from first principles. The results of calculations reveal a phase transition from antiferromagnetic double-stripe ordering at…

Superconductivity · Physics 2014-02-11 A. Ciechan , M. J. Winiarski , M. Samsel-Czekała

Magnetization curves of MnSi single crystals have been measured in a range of temperatures $T = 5.5 - 35$ K and magnetic field strengths $H \leq 11$ kOe for $H \parallel$ [111], [001], and [110]. Special attention has been paid to the…

Strongly Correlated Electrons · Physics 2014-11-25 V. N. Narozhnyi , V. N. Krasnorussky

We have systematically measured resistivity, susceptibility and specific heat under different magnetic fields (H) in Eu$_{1-x}$La$_x$Fe$_2$As$_2$ single crystals. It is found that a metamagnetic transition from A-type antiferromagnetism to…

Superconductivity · Physics 2015-05-13 T. Wu , G. Wu , H. Chen , Y. L. Xie , R. H. Liu , X. F. Wang , X. H. Chen

We reported a systematic change in the average magnetic relaxation rate, after the application and removal of a 5 T magnetic field, in a polycrystalline sample of La0.5Ca0.5MnO3. Magnetic relaxation measurements and magnetization versus…

Strongly Correlated Electrons · Physics 2009-10-31 J. Lopez , P. N. Lisboa-Filho , W. A. C. Passos , W. A. Ortiz , F. M. Araujo-Moreira

Magnetic susceptibility and the magnetization process have been measured in \green polycrystal. In this compound, the magnetic manganese ion exists as Mn$^{5+}$ in a tetrahedral environment, and thus the magnetic interaction can be…

Strongly Correlated Electrons · Physics 2009-11-07 M. Uchida , H. Tanaka , M. Bartashevich , T. Goto

We have studied the impact of the magnetic field on the electromagnon excitations in TbMnO3 crystal. Applying magnetic field along the c axis, we show that the electromagnons transform into pure antiferromagnetic modes, losing their polar…

Materials Science · Physics 2011-07-06 P. Rovillain , M. Cazayous , Y. Gallais , M-A. Measson , A. Sacuto , H. Sakata , M. Mochizuki

TmGa$_{3}$ (AuCu$_3$ structure) undergoes two phase transitions, an antiferroquadrupolar transition at $\sim$ 4.29 K and long-range antiferromagnetic ordering at $\sim$ 4.26 K. Due to the close vicinity of the two phase transitions,…

Strongly Correlated Electrons · Physics 2007-09-27 M. G. Banks , R. K. Kremer , G. Lapertot , D. Mannix , A. P. Murani

Sigma-phase Fe47Re53 compound was investigated by means of in-field DC and AC magnetization measurements. Field cooled, MFC, and zero-field cooled, MZFC, DC magnetization curves were recorded in the magnetic field, H, up to 1000 Oe. AC…

Strongly Correlated Electrons · Physics 2019-07-24 S. M. Dubiel , M. I. Tsindlekht , I. Felner

Magnetoresistance and magnetocaloric properties of polycrystalline HoRhGe have been studied. This compound orders antiferromagnetically with a Neel temperature (TN) of 5.5 K and undergoes a first order metamagnetic transition at 2 K. It…

Strongly Correlated Electrons · Physics 2019-09-19 Sachin B. Gupta , K. G. Suresh , A. K. Nigam

We report the magnetization, specific heat and transport measurements of high quality Na$_{0.85}$CoO$_2$ single crystals in applied magnetic fields up to 14T. In high temperatures, the system is in a paramagnetic phase. It undergoes a…

Superconductivity · Physics 2009-11-10 J. L. Luo , N. L. Wang , G. T. Liu , D. Wu , X. N. Jing , F. Hu , T. Xiang

We use spin-polarized scanning tunneling microscopy to demonstrate that Ho atoms on magnesium oxide exhibit a coercive field of more than 8 T and magnetic bistability for many minutes, both at 35 K. The first spontaneous magnetization…

Mesoscale and Nanoscale Physics · Physics 2018-07-18 Fabian Donat Natterer , Fabio Donati , François Patthey , Harald Brune

Two terbium tellurides, TbTe3 and Tb2Te5, were studied by means of thermodynamics, ultrafast pump-probe spectroscopy and torque magnetometry. While crystal structure and some physical properties of TbTe3 were established previously, the…

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