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We have computationally explored workfunction values of Cs2Te5, an existing crystalline phase of the Cs-Te system and a small bandgap semiconductor, in order to search for reduced workfunction alternatives of Cs2Te that preserve the…

We investigated the anisotropic magnetic properties of CePd$_2$As$_2$ by magnetic, thermal and electrical transport studies. X-ray diffraction confirmed the tetragonal ThCr$_2$Si$_2$-type structure and the high-quality of the single…

Strongly Correlated Electrons · Physics 2017-08-09 M. O. Ajeesh , T. Shang , W. B. Jiang , W. Xie , R. D. dos Reis , M. Smidman , C. Geibel , H. Q. Yuan , M. Nicklas

We determine the work functions of the iron arsenic compounds $A$Fe$_2$As$_2$ ($A=\mathrm{Ca, Ba, Cs}$) using photoemission spectroscopy to be 2.7 eV for CaFe$_2$As$_2$, 1.8 eV for BaFe$_2$As$_2$, and 1.3 eV for CsFe$_2$As$_2$. The work…

Strongly Correlated Electrons · Physics 2020-06-24 H. Pfau , H. Soifer , J. A. Sobota , A. Gauthier , C. R. Rotundu , J. C. Palmstrom , I. R. Fisher , G. -Y. Chen , H. -H. Wen , Z. -X. Shen , P. S. Kirchmann

The Weyl semi-metal candidate MoTe$_{2}$ is expected to exhibit a range of exotic electronic transport properties. It exhibits a structural phase transition near room temperature that is evident in the thermal hysteresis in resistivity and…

The asymmetric electron dispersion in type-II Weyl semimetal theoretically hosts anisotropic transport properties. Here we observe the significant anisotropic Adler-Bell-Jackiw (ABJ) anomaly in the Fermi-level delicately adjusted…

The anisotropy in the electronic structure of the inherently nanolaminated ternary phase Cr$_{2}$GeC is investigated by bulk-sensitive and element selective soft x-ray absorption/emission spectroscopy. The angle-resolved absorption/emission…

Materials Science · Physics 2015-10-01 Martin Magnuson , Maurizio Mattesini , Matthieu Bugnet , Per Eklund

We present a comprehensive investigation on anisotropic magnetic and magnetocaloric properties of the quasi-two-dimensional weak itinerant ferromagnet trigonal Cr$_{0.62}$Te single crystals. Magnetic-anisotropy-induced satellite transition…

Materials Science · Physics 2020-02-07 Yu Liu , Milinda Abeykoon , Eli Stavitski , Klaus Attenkofer , C. Petrovic

We study the anisotropic in-plane optical conductivity of detwinned Ba(Fe1-xCox)2As2 single crystals for x=0, 2.5% and 4.5% in a broad energy range (3 meV-5 eV) across their structural and magnetic transitions. For temperatures below the…

Strongly Correlated Electrons · Physics 2016-11-25 A. Lucarelli , A. Dusza , A. Sanna , S. Massidda , J. -H. Chu , I. R. Fisher , L. Degiorgi

Direction-dependent charge transport and optical responses are characteristic of van der Waals (vdW) materials with strong in-plane anisotropy. While transition-metal trichalcogenides (TMTCs) exemplify this behavior, heavier analogs remain…

An ultralow lattice thermal conductivity of 0.14 W$\cdot$ m$^{-1} \cdot$ K$^{-1}$ along the $\vec b$ axis of As$_2$Se$_3$ single crystals was obtained at 300 K by first-principles calculations involving the density functional theory and the…

Materials Science · Physics 2017-12-18 Robert L. González-Romero , Alex Antonelli , Anderson S. Chaves , Juan J. Meléndez

Weyl semimetal (WSM) states can be achieved by breaking spatial-inversion symmetry or time reversal symmetry. However, the anisotropy of the energy reduction contributing to the emergence of WSM states has seldom been investigated by…

We report the experimental study on the structural and magnetic properties of a new ternary intermetallic compound $\mathrm{Sm_2AgSi_3}$. The properties of the sample were investigated in detail by X-ray diffraction, dc-magnetization, and…

Strongly Correlated Electrons · Physics 2021-09-21 Baidyanath Sahu , R. Djoumessi Fobasso , Andre M. Strydom

We report temperature-dependent polarized optical conductivity [$\sigma(\omega)$] spectra of CeFe$_2$Al$_{10}$, which is a reference material for CeRu$_2$Al$_{10}$ and CeOs$_2$Al$_{10}$ with an anomalous magnetic transition at 28 K. The…

Strongly Correlated Electrons · Physics 2015-05-20 Shin-ichi Kimura , Yuji Muro , Toshiro Takabatake

The optical conductivity $\sigma(\omega,T)$ of CeRhSn was studied by broadband infrared spectroscopy. Temperature-dependent spectral weight transfer occurs over high energy ($0.8\,$eV) and temperature (${\sim}500\,$K) scales, classifying…

Strongly Correlated Electrons · Physics 2024-06-04 Thomas U. Böhm , Nicholas S. Sirica , Bo Gyu Jang , Yu Liu , Eric D. Bauer , Yue Huang , Christopher C. Homes , Jian-Xin Zhu , Filip Ronning

The observation of metallic ground states in a variety of two-dimensional electronic systems poses a fundamental challenge for the theory of electron fluids. Here, we analyze evidence for the existence of a regime, which we call the…

Superconductivity · Physics 2019-02-06 Aharon Kapitulnik , Steven A. Kivelson , Boris Spivak

Photochemical reactions on semiconductors are anisotropic, since they occur with different rates on surfaces of different orientation. Understanding the origin of this anisotropy is crucial to engineering more efficient photocatalysts. In…

Materials Science · Physics 2022-05-04 Chiara Ricca , Ulrich Aschauer

Magnetocrystalline anisotropy is a fundamental property of magnetic materials that determines the dynamics of magnetic precession, the frequency of spin waves, the thermal stability of magnetic domains, and the efficiency of spintronic…

A misalignment of anisotropic crystallites causes small values of anisotropy and decreases the critical current density of textured polycrystalline superconductors. To relate the crystallite misalignment and out-plane anisotropy, the…

Superconductivity · Physics 2023-07-10 D. M. Gokhfeld , S. V. Semenov , M. I. Petrov , I. V. Nemtsev , D. A. Balaev

The electrical conductivity anisotropy of the sigma-bands is calculated for the (Mg,Sc)B2 system using a virtual crystal model. Our results reveal that anisotropy drops with relatively little scandium content (< 30%); this behaviour…

Superconductivity · Physics 2007-05-23 Sabina Ruiz-Chavarria , Gustavo Tavizon , Pablo de la Mora

Layered van der Waals semimetallic $T_\mathrm{d}$-WTe$_{2}$, exhibiting intriguing properties which include non-saturating extreme positive magnetoresistance (MR) and tunable chiral anomaly, has emerged as model topological type-II Weyl…

Mesoscale and Nanoscale Physics · Physics 2021-03-31 R. Adhikari , S. Adhikari , B. Faina , M. Terschanski , S. Bork , C. Leimhofer , M. Cinchetti , A. Bonanni
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