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Here we report the discovery of superconductivity in multiple phases of the compressed GeSb2Te4 (GST) phase change memory alloy, which has attracted considerable attention for the last decade due to its unusual physical properties with many…

We report a configuration strategy for improving the thermoelectric (TE) performance of two-dimensional (2D) transition metal dichalcogenide (TMDC) WS2 based on the experimentally prepared WS2/WSe2 lateral superlattice (LS) crystal. On the…

Materials Science · Physics 2022-07-27 Yonglan Hu , Tie Yang , Dengfeng Li , Guangqian Ding , Chaochao Dun , Dandan Wu , Xiaotian Wang

Unlike, momentum-dependent Rashba spin-splitting, materials exhibiting intrinsic momentum-independent unidirectional spin polarization also known as persistent spin texture (PST) in the full Brillouin zone are scarce. In this work, a list…

Applied Physics · Physics 2024-08-28 Manish Kumar Mohanta , Puru Jena

We present an investigation of the thermoelectric properties of cubic perovskite SrTiO3. The results are derived from a combination of calculated transport functions obtained from Boltzmann transport theory in the constant scattering time…

Materials Science · Physics 2016-05-27 Jifeng Sun , David J. Singh

We report the discovery of superconductivity in noncentrosymmetric NbReSi, which crystallizes in a hexagonal ZrNiAl-type crystal structure with space group $P\bar{6}2m$ (No.~189). Bulk superconductivity, with $T_c$ = 6.5 K was characterized…

Superconductivity · Physics 2021-11-24 H. Su , T. Shang , F. Du , C. F. Chen , H. Q. Ye , X. Lu , C. Cao , M. Smidman , H. Q. Yuan

We report the crystal growth and structural and electronic properties of superconducting, van der Waals layered PtTe. Easily cleavable crystals with a plate-like morphology consistent with the layered structure were grown from a platinum…

Superconductivity · Physics 2022-06-08 Michael A. McGuire , Yun-Yi Pai , Matthew Brahlek , Satoshi Okamoto , R. G. Moore

In this work, both thermal and electrical transport properties of diamond$-$cubic Si (Si$-$I) and metastable R8 phase of Si (Si$-$XII) are comparatively studied by using first$-$principles calculations combined with Boltzmann transport…

Materials Science · Physics 2022-04-27 Yongchao Rao , C. Y. Zhao , Shenghong Ju

Structural and thermoelectric properties of metallic and semiconducting Sb2Te3 are reported. X-Ray diffraction and Raman spectroscopy studies reveal that semiconducting sample have higher defect density. Nature and origin of possible…

Materials Science · Physics 2015-07-14 Diptasikha Das , K. Malik , A. K. Deb , Sandip Dhara , S. Bandyopadhyay , Aritra Banerjee

Thermoelectric (TE) materials research plays a vital role in heat-to-electrical energy conversion and refrigeration applications. Bismuth-antimony (Bi-Sb) alloy is a promising material for thermoelectric cooling. Herein, a high figure of…

Materials Science · Physics 2019-10-16 Sheng Gao , John Gaskins , Xixiao Hu , Kathleen Tomko , Patrick Hopkins , S. Joseph Poon

We report the electronic structure, electric and thermal transport properties of Ru$_{1-x}$Ir$_{x}$Se$_2$ ($x \leq 0.2$). RuSe$_2$ is a semiconductor that crystallizes in a cubic pyrite unit cell. The Seebeck coefficient of RuSe$_2$ exceeds…

Strongly Correlated Electrons · Physics 2016-04-07 Kefeng Wang , Aifeng Wang , A. Tomic , Limin Wang , A. M. Milinda Abeykoon , E. Dooryhee , S. J. L. Billinge , C. Petrovic

The study of topological quantum materials for enhanced thermoelectric energy conversion has received significant attention recently. Topological materials (including topological insulators and Dirac/Weyl/nodal-line semi-metals) with unique…

AgSbTe2 is a well-known thermoelectric material with a high Seebeck coefficient and intrinsically low thermal conductivity, but its behavior under pressure remains largely unexplored. Here we report a systematic investigation of the…

Thermoelectric materials (TMs) can uniquely convert waste heat into electricity, which provides a potential solution for the global energy crisis that is increasingly severe. Bulk Cu2Se, with ionic conductivity of Cu ions, exhibits a…

The recent discovery of materials hosting persistent spin texture (PST) opens an avenue for the realization of energy-saving spintronics since they support an extraordinarily long spin lifetime. However, the stability of the PST is…

Strongly Correlated Electrons · Physics 2023-02-21 Moh. Adhib Ulil Absor , Iman Santoso

Cu-based argyrodites have gained much attention as a new class of thermoelectric materials for energy harvesting. However, the phase transition occurring in these materials and low energy conversion performance limited their broad…

The mixed ionic-electronic conductor $\beta$-Zn$_4$Sb$_3$ is a cheap and high performing thermoelectric material, but under operating conditions with a temperature gradient and a running current, the material decomposes as Zn readily…

p-type Ce1.05Fe4Sb12.04 filled skutterudites with much improved thermoelectric properties have been synthesized by rapidly converting nearly amorphous ribbons into crystalline pellets under pressure. It is found that this process greatly…

Materials Science · Physics 2010-07-01 Qing Jie , Juan Zhou , Xun Shi , Ivo K. Dimitrov , Qiang Li

Mg-Si-Sn solid solutions have interesting and useful semiconducting properties particularly for thermoelectric applications. While cubic solid solutions have been prepared by a variety of methods, solid solutions with a trigonal crystal…

Materials Science · Physics 2017-11-13 Pathikumar Sellappan , Anthony Y. Fong , Masayuki Murata , Yasuhiro Kodera , Javier E. Garay

The reliable calculation of electronic structures and understanding of electrical properties depends on an accurate model of the crystal structure. Here, we have reinvestigated the crystal structure of the high-zT thermoelectric material…

Materials Science · Physics 2018-08-14 I. Loa , S. R. Popuri , A. D. Fortes , J. W. G. Bos

Solid state physics and quantum electrodynamics with its ultra-relativistic (massless) particles meet, to their mutual beneit, in the electronic properties of one-dimensional carbon nanotubes as well as two-dimensional graphene or surfaces…