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Van der Waals magnetic materials are building blocks for novel kinds of spintronic devices and playgrounds for exploring collective magnetic phenomena down to the two-dimensional limit. Chromium-tellurium compounds are relevant in this…

Here, we present a detailed study on the temperature and angular dependence of the Shubnikov-de-Haas (SdH) effect in the semi-metal WTe$_2$. This compound was recently shown to display a very large non-saturating magnetoresistance which was…

Materials Science · Physics 2015-10-05 D. Rhodes , S. Das , Q. R. Zhang , B. Zeng , N. R. Pradhan , N. Kikugawa , E. Manousakis , L. Balicas

We report measurements of the resistance of silicon MOSFETs as a function of temperature in high parallel magnetic fields where the 2D system of electrons has been shown to be fully spin-polarized. A magnetic field suppresses the metallic…

Strongly Correlated Electrons · Physics 2009-10-31 K. M. Mertes , Hairong Zheng , S. A. Vitkalov , M. P. Sarachik , T. M. Klapwijk

Integration of transition metal dichalcogenides (TMDs) on ferromagnetic materials (FM) may yield fascinating physics and promise for electronics and spintronic applications. In this work, high-temperature anomalous Hall effect (AHE) in the…

Optical conductivity data s(w) of the colossal magneto-resistance (CMR) pyrochlore Tl2Mn2O7 are presented as functions of temperature (T) and externalmagnetic field (B). Upon cooling and upon applying B near the Curietemperature, where the…

Strongly Correlated Electrons · Physics 2009-11-07 H. Okamura , T. Koretsune , M. Matsunami , S. Kimura , T. Nanba , H. Imai , Y. Shimakawa , Y. Kubo

In this work we address theoretically a key issue concerning microwave-induced longitudinal resistivity oscillations and zero resistance states, as is tempoerature. In order to explain the strong temperature dependence of the longitudinal…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 J. Iñarrea , G. Platero

We present the temperature dependence of the uniform susceptibility of spin-half quantum antiferromagnets on spatially anisotropic triangular-lattices, using high temperature series expansions. We consider a model with two exchange…

Strongly Correlated Electrons · Physics 2009-11-10 Weihong Zheng , Rajiv R. P. Singh , Ross H. McKenzie , Radu Coldea

Recently, van der Waals (vdW) magnetic heterostructures have received increasing research attention in spintronics. However, the lack of room-temperature magnetic order of vdW material has largely impedes its development in practical…

Materials Science · Physics 2023-03-08 Xinlu Li , Meng Zhu , Yaoyuan Wang , Fanxing Zheng , Jianting Dong , Ye Zhou , Long You , Jia Zhang

We study the temperature and pressure dependence of the structural and electronic properties of the iron pnictide superconductor BaFe2As2. We use density functional theory based Born-Oppenheimer molecular dynamics simulations to investigate…

Strongly Correlated Electrons · Physics 2013-08-06 Steffen Backes , Harald O. Jeschke

We present high resolution measurements of the thermal expansion coefficient and the magnetostriction along the a-axis of CuGeO_3 in magnetic fields up to 16 Tesla. From the pronounced anomalies of the lattice constant a occurring for both…

Condensed Matter · Physics 2009-10-28 T. Lorenz , U. Ammerahl , T. Auweiler , B. Büchner , A. Revcolevschi , G. Dhalenne

The electronic structure and intrinsic magnetic properties of $\text{Fe}_2\text{AlB}_2$-related compounds and their alloys have been investigated using density functional theory. For $\text{Fe}_2\text{AlB}_2$, the crystallographic $a$ axis…

Materials Science · Physics 2017-03-22 Liqin Ke , Bruce N. Harmon , Matthew J. Kramer

We report physical properties of the conductive magnet PdCrO2 consisting of a layered structure with a triangular lattice of Cr3+ ions (S=3/2). We confirmed an antiferromagnetic transition at TN=37.5K by means of specific heat, electrical…

Strongly Correlated Electrons · Physics 2009-03-31 Hiroshi Takatsu , Hideki Yoshizawa , Shingo Yonezawa , Yoshiteru Maeno

Temperature evolution of the 2H-TaSe2 Fermi surface (FS) is studied by high-resolution angle-resolved photoemission spectroscopy (ARPES). High-accuracy determination of the FS geometry was possible after measuring electron momenta and…

Strongly Correlated Electrons · Physics 2009-03-20 D. S. Inosov , D. V. Evtushinsky , V. B. Zabolotnyy , A. A. Kordyuk , B. Buechner , R. Follath , H. Berger , S. V. Borisenko

Unsaturated magnetoresistance (MR) has been reported in WTe2, and remains irrepressible up to very high field. Intense optimization of the crystalline quality causes a squarely-increasing MR, as interpreted by perfect compensation of…

We present a thorough study on the magnetoanisotropic properties and magnetocaloric effect in the layered ferromagnetic Cr$_4$Te$_5$ single crystals by performing the critical behaviour analysis of magnetization isotherms. The critical…

Materials Science · Physics 2022-09-20 Shubham Purwar , Susmita Changdar , Susanta Ghosh , S. Thirupathaiah

Layered van der Waals tellurides reveal topologically non-trivial properties that give rise to unconventional magneto-transport phenomena. Additionally, their semimetallic character with high mobility makes them promising candidates for…

We investigate the structural, magnetocrystalline anisotropy, critical behaviour, and magnetocaloric effect in the layered room-temperature monoclinic ferromagnet Cr$_{1.38}$Te$_2$. The critical behavior is studied by employing various…

High entropy carbides ceramics with randomly-distributed multiple principal cations have shown high temperature stability, low thermal conductivity, and possible radiation tolerance. While chemical disorder has been shown to suppress…

Materials Science · Physics 2022-05-23 Cody A. Dennett , Zilong Hua , Eric Lang , Fei Wang , Bai Cui

In this work, we study the thermo-mechanical behavior of metallic structures designed to significantly change shape in response to thermal stimuli. This behavior is achieved by arranging two metals with different coefficient of thermal…

Applied Physics · Physics 2020-06-30 Semih Taniker , Paolo Celli , Damiano Pasini , Douglas Hofmann , Chiara Daraio

We study negative thermal expansion (NTE) in model lattices with multiple atoms per cell and first- and second-nearest neighbor interactions using the (anharmonic) Morse potential. By exploring the phase space of neighbor distances and…

Materials Science · Physics 2016-06-15 Joseph T. Schick , Andrew M. Rappe
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