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Magnetometry, electrical transport, and neutron scattering measurements were performed on single crystals of the Fe^{4+}-containing perovskite-related phase Sr_3Fe_2O_7-x as a function of oxygen content. Although both the crystal structure…

Strongly Correlated Electrons · Physics 2013-06-12 D. C. Peets , J. -H. Kim , P. Dosanjh , M. Reehuis , A. Maljuk , N. Aliouane , C. Ulrich , B. Keimer

Layered van der Waals ferromagnets, which preserve their magnetic properties down to exfoliated monolayers, are fueling an abundance of fundamental research and nanoscale device demonstration. CrGeTe$_3$ is a prime example for this class of…

Strongly Correlated Electrons · Physics 2023-09-27 Han-Xiang Xu , Makoto Shimizu , Daniel Guterding , Junya Otsuki , Harald O. Jeschke

We have investigated the impact of Ru substitution for Co on the behavior of the ferromagnetic superconductor UCoGe by performing x-ray diffraction, magnetization, specific heat and electrical resistivity measurements on polycrystalline…

Strongly Correlated Electrons · Physics 2015-08-03 Michal Vališka , Jiří Pospíšil , Vladimír Sechovský , Martin Diviš , Mohsen M. Abd-Elmeguid

Powder X-ray diffraction (PXRD) and single-crystal neutron scattering were used to study in detail the structural properties of the Cs2CuCl(4-x)Br(x) series, good realizations of layered triangular antiferromagnets. Detailed…

Filled skutterudite compound EuFe$_4$As$_{12}$ shows the highest magnetic ordering temperature of $T_{\rm C}$ = 154 K among Eu-based skutterudite compounds, but its magnetic ground state has not been determined yet. Here, we performed…

Strongly Correlated Electrons · Physics 2020-08-26 Q. -P. Ding , H. -C. Lee , K. Nishine , Y. Kawamura , C. Sekine , Y. Furukawa

The magnetization of Pb_{1-x}Eu_{x}Te samples with x = 1.9, 2.6 and 6.0% was measured at 20 mK in fields up to 50 kOe, and at 0.6 K in fields up to 180 kOe. The 20 mK data show the magnetization steps (MSTs) arising from pairs and from…

The two-dimensional (2D) material Cr$_2$Ge$_2$Te$_6$ is a member of the class of insulating van der Waals magnets. Here, using high resolution angle-resolved photoemission spectroscopy in a detailed temperature dependence study, we identify…

The preparative method, characterization and magnetic susceptibility \chi measurements versus temperature T of the heavy fermion transition metal oxide LiV_{2}O_{4} are reported in detail. The intrinsic \chi(T) shows a nearly T-independent…

Strongly Correlated Electrons · Physics 2010-11-12 S. Kondo , D. C. Johnston , L. L. Miller

Enhanced magnetism has recently been reported for the topological-insulator/ferromagnet interface Bi$_2$Se$_3$/EuS with Curie temperatures claimed to be raised above room temperature from the bulk EuS value of 16 K. Here we investigate the…

Strongly Correlated Electrons · Physics 2021-08-25 K. Prokeš , Chen Luo , H. Ryll , E. Schierle , D. Marchenko , E. Weschke , F. Radu , R. Abrudan , V. V. Volobuev , G. Springholz , O. Rader

Using the state-of-art dynamical mean-field theory combined with density functional theory method, we have performed systematic study on the temperature and pressure dependent electronic structure of ferromagnetic quantum critical material…

Strongly Correlated Electrons · Physics 2020-12-01 Chao Cao , Jian-Xin Zhu

Low dimensional magnetism has been powerfully boosted as a promising candidate for numerous applications. The stability of the long-range magnetic order is directly dependent on the electronic structure and the relative strength of the…

Materials Science · Physics 2020-04-27 Adolfo O. Fumega , S. Blanco-Canosa , H. Babu-Vasili , Jian-Shi Zhou , F. Rivadulla , Victor Pardo

wo-dimensional (2D) materials unique properties and their promising applications in post-silicon microelectronics have attracted significant attention in the past decade. Recently, ferromagnetic order with out-of-plane easy axis in a…

Materials Science · Physics 2020-07-28 Maedeh Rassekh , Junjie He , Saber Farjami Shayesteh , Juan Jose Palacios

Magnetic two-dimensional materials have potential application in next-generation electronic devices and have stimulated extensive interest in condensed matter physics and material fields. However, how to realize high-temperature…

Materials Science · Physics 2024-06-19 Panjun Feng , Shuo Zhang , Dapeng Liu , Miao Gao , Fengjie Ma , Xun-Wang Yan , Z. Y. Xie

We present a first-principles investigation of magnetic exchange interactions and critical behavior in (111)-oriented (LaMnO$_3$)$_{2n}$|(SrMnO$_3$)$_n$ superlattices for $n=2,4,6$. For all superlattices under investigation, we find robust…

Strongly Correlated Electrons · Physics 2026-02-17 Shivalika Sharma , Julio do Nascimento , Imran Ahamed , Fabrizio Cossu , Heung-Sik Kim , Igor Di Marco

Ferromagnetic-paramagnetic phase transitions in classical and quantum thin films have been studied up to 50 mono-layers using effective field theory with two-site cluster approximation. Variation of the Curie temperature as a function of…

Statistical Mechanics · Physics 2014-12-24 Yusuf Yuksel , Umit Akinci

Diluted magnetic semiconductors including Mn-doped GaAs are attractive for gate-controlled spintronics but Curie transition at room temperature with long-range ferromagnetic order is still debatable to date. Here, we report the…

Iron-based chalcogenides are complex superconducting systems in which orbitally-dependent electronic correlations play an important role. Here, using high-resolution angle-resolved photoemission spectroscopy, we investigate the effect of…

Superconductivity · Physics 2017-09-13 P. Reiss , M. D. Watson , T. K. Kim , A. A. Haghighirad , D. N. Woodruff , M. Bruma , S. J. Clarke , A. I. Coldea

UCoGa and URhGa, two isostructural compounds show opposite signs of the initial response of Curie temperature to applied hydrostatic premenssure. To determine the physical origin of this contradiction the magnetization data measured with…

Strongly Correlated Electrons · Physics 2020-09-16 Petr Opletal , Jaroslav Valenta , Petr Proschek , Vladimír Sechovský , Jan Prokleška

Magnetocaloric effect in Mn4FeGe3-xSix compounds has been studied by dc magnetization measurements. For the parent compound Mn4FeGe3, the paramagnetic to ferromagnetic transition temperature TC is above room temperature (320 K), which…

Materials Science · Physics 2013-04-10 Madhumita Halder , S. M. Yusuf , A. K. Nigam

The realization of long-range magnetic ordering in two-dimensional (2D) systems can potentially revolutionize next-generation information technology. Here, we report the successful fabrication of crystalline Cr3Te4 monolayers with room…

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