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In contrast to semiconductors doped with transition metal magnetic elements, which become ferromagnetic at temperatures below ~ 100K, semiconductors doped with non-magnetic ions (e.g. silicon doped with phosphorous) have not shown evidence…

Strongly Correlated Electrons · Physics 2015-05-13 Erik Nielsen , R. N. Bhatt

Temperature-dependent in-plane, $\rho_a(T)$, and inter-plane, $\rho_c(T)$, resistivities were measured for the iron-arsenide superconductor (Ba$_{1-x}$K$_x$)Fe $_2$As$_2$ over a broad doping range from parent compound to optimal doping…

Superconductivity · Physics 2011-06-06 M. A. Tanatar , E. C. Blomberg , Hyunsoo Kim , Kyuil Cho , W. E. Straszheim , Bing Shen , Hai-Hu Wen , R. Prozorov

Diluted magnetic semiconductors (DMS) have received much attention due to its potential applications to spintronics devices. A prototypical system (Ga,Mn)As has been widely studied since 1990s. The simultaneous spin and charge doping via…

EuC$_2$ is a ferromagnet with a Curie-temperature of $T_C \simeq 15\,$K. It is semiconducting with the particularity that the resistivity drops by about 5 orders of magnitude on cooling through $T_C$, which is therefore called a…

Materials Science · Physics 2011-12-01 O. Heyer , P. Link , D. Wandner , U. Ruschewitz , T. Lorenz

Low temperature high magnetic field $^{57}Fe$ M$\ddot{o}$ssbauer measurements were carried out on inter-metallic $Hf_{0.77}Ta_{0.23}Fe_2$ compound by following novel paths in H-T space. The ferromagnetic (FM) fraction at 5K and zero…

Strongly Correlated Electrons · Physics 2013-07-19 V. Raghavendra Reddy , R. Rawat , Ajay Gupta , Pallab Bag , V. Siruguri , P. Chaddah

We demonstrate the presence of ferromagnetic (FM) fluctuations in the superconducting and non-superconducting heavily overdoped regimes of high-temperature superconducting copper oxides, using (Bi,Pb)_2_Sr_2_CuO_6+delta_ (Bi-2201) single…

The multifunctional materials with prominent properties such as electrical, ferroelectric, magnetic, optical and magneto-optical are of keen interest to several practical implications. In the roadmap of designing such materials, in the…

Materials Science · Physics 2023-07-07 Chandan Kumar Vishwakarma , B. K. Mani

We carry out a first-principles investigation on magnetism, electronic structure, magneto-optical effects and topological property of newly grown cubic double perovskite Ba2NiOsO6 and its (111) (Ba2NiOsO6)/(BaTiO3)10 superlattice, based on…

Strongly Correlated Electrons · Physics 2019-10-02 Hai-Shuang Lu , Guang-Yu Guo

High TC fully compensated ferrimagnets are potential candidates for spin transfer torque based spintronic devices. We report the structural and magnetic properties of high TC fully compensated ferrimagnets Mn2V0.5Co0.5Z where Z is Ga, Al,…

Materials Science · Physics 2018-12-04 P V Midhunlal , J Arout Chelvane , D Prabhu , Raghavan Gopalan , Harish Kumar N

We report magnetization and specific heat measurements in the 2D frustrated spin-1/2 Heisenberg antiferromagnet Cs2CuCl4 at temperatures down to 0.05 K and high magnetic fields up to 11.5 T applied along a, b and c-axes. The low-field…

Strongly Correlated Electrons · Physics 2013-06-25 Y. Tokiwa , T. Radu , R. Coldea , H. Wilhelm , Z. Tylczynski , F. Steglich

We use density functional theory to explore the possibility of making the semiconducting transition-metal dichalcogenide MoS$_2$ ferromagnetic by introducing holes into the narrow Mo $d$ band that forms the top of the valence band. In the…

Materials Science · Physics 2019-12-25 Yuqiang Gao , Nirmal Ganguli , Paul J. Kelly

Half-metallic ferromagnets can produce fully spin-polarized conduction electrons and can be applied to fabricate spintronic devices. Thus, in this study, the electronic structure, magnetic properties, and optical properties of GaSb, which…

Materials Science · Physics 2020-01-07 Chuang Wang , Wenhui Wan , Yanfeng Ge , Yong-Hong Zhao , Kaicheng Zhang , Yong Liu

The weak itinerant ferromagnet UIr is studied by magnetization and magnetostriction measurements. Critical behavior, which surprisingly extends up to several Tesla, is observed at the Curie temperature $T_C\simeq45$ K and is analyzed using…

Strongly Correlated Electrons · Physics 2010-03-16 W. Knafo , C. Meingast , S. Sakarya , N. H. van Dijk , Y. Huang , H. Rakoto , J. -M. Broto , H. v. Löhneysen

The first-principles full-potential linearized augmented plane-wave method based on density functional theory is used to investigate electronic structure and magnetic properties of hypothetical binary compounds of I$^{A}$ subgroup elements…

Materials Science · Physics 2008-09-14 Krzysztof Zberecki , Leszek Adamowicz , Michał Wierzbicki

We have synthesized a new ferromagnetic topological insulator by doping Cr to the ternary topological-insulator material TlSbTe2. Single crystals of Tl_{1-x}Cr_{x}SbTe2 were grown by a melting method and it was found that Cr can be…

Materials Science · Physics 2016-01-12 Zhiwei Wang , Kouji Segawa , Satoshi Sasaki , A. A. Taskin , Yoichi Ando

We report the magnetism and transport measurements of CaCo$_2$As$_2$ and Ca$_{0.9}$Sr$_{0.1}$Co$_2$As$_2$ single crystals. Antiferromagnetic transition was observed at about 70 K and 90 K for CaCo$_2$As$_2$ and…

Strongly Correlated Electrons · Physics 2012-06-15 J. J. Ying , Y. J. Yan , A. F. Wang , Z. J. Xiang , P. Cheng , G. J. Ye , X. H. Chen

We study the magnetocaloric effect and critical behavior of Co$_2$Cr$_{1-x}$Mn$_x$Al ($x=$ 0.25, 0.5, 0.75) Heusler alloys across the ferromagnetic (FM) transition (T$_{\rm C}$). The Rietveld refinement of x-ray diffraction patterns exhibit…

Materials Science · Physics 2020-01-08 Priyanka Nehla , V. K. Anand , Bastian Klemke , Bella Lake , R. S. Dhaka

In itinerant ferromagnets, the quenched disorder is predicted to dramatically affect the ferromagnetic to paramagnetic quantum phase transition driven by external control parameters at zero temperature. Here we report a study on Fe-doped…

Strongly Correlated Electrons · Physics 2016-08-04 D. Arcon , L. M. Schoop , R. J. Cava , C. Felser

A new method is presented for measuring terms in the elastoresistivity tensor $m_{ij}$ of single crystal samples with tetragonal symmetry. The technique is applied to a representative underdoped Fe-arsenide,…

Superconductivity · Physics 2013-08-14 Hsueh-Hui Kuo , Maxwell C. Shapiro , Scott C. Riggs , Ian R. Fisher

Using Density Functional Theory (DFT) calculations and Monte-Carlo (MC) simulations, we investigate the recently reported magnetic transition in B2 Al-Cr-Co alloys. The Cr sublattice is alloyed with different amounts of Co in the…

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