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The temperature-induced structural and electronic transformation in VO$_2$ between the monoclinic M1 and tetragonal rutile phases was studied by means of \textit{ab initio} molecular dynamics, based on density functional theory with Hubbard…

Materials Science · Physics 2017-10-11 Dušan Plašienka , Roman Martoňák , Marcus C. Newton

We have investigated the nature of ferromagnetic order and phase transitions in two dimensional (2D) van der Waals (vdW) layered material, Fe$_4$GeTe$_2$ through measurements of magnetization, magneto-caloric Effect (MCE), and heat…

Two-dimensional (2D) transition metal di-chalcogenide layers with high electrical conductivity and spin-orbit coupling (SOC) can find huge potential in spintronic devices. With limited success of 2D spin Hall material development, we…

The emergence of multiferroic materials, which possess both ferromagnetic (FM) and ferroelectric (FE) properties, drive advancements in magnetoelectric applications and the next generation of spintronics. Based on first-principles…

Materials Science · Physics 2024-05-24 Kang-Jie Li , Ze-Quan Wang , Zu-Xin Chen , Yusheng Hou

Synchrotron X-ray total scattering studies of structural changes in rutile VO2 at the metal-insulator transition temperature of 340 K reveal that monoclinic and tetragonal phases of VO2 coexist in equilibrium, as expected for a first-order…

Materials Science · Physics 2010-08-10 Serena A. Corr , Daniel P. Shoemaker , Brent C. Melot , Ram Seshadri

Two-dimensional transition metal dichalcogenides have attracted great attention recently. Motivated by a recent study of crystalline bulk VTe$_2$, we theoretically investigated the spin-charge-lattice interplay in monolayer VTe$_2$. To…

Materials Science · Physics 2022-06-23 Do Hoon Kiem , Min Yong Jeong , Hongkee Yoon , Myung Joon Han

Incorporating magnetism into two dimensional (2D) van der Waals (VdW) heterostrutures is crucial for the development of functional electronic and magnetic devices. Here we show that Nb3X8 (X = Cl, Br) is a family of 2D layered trimerized…

The mechanical and electronic properties of transition metal dichalcogenide (TMD) monolayers corresponding to transition groups IV, VI, and X are explored under mechanical bending from first principles calculations using the strongly…

Materials Science · Physics 2019-07-19 Niraj K. Nepal , Liping Yu , Qimin Yan , Adrienn Ruzsinszky

Layered van der Waals ferromagnets are promising candidates for designing new spintronic devices. Here we investigated the critical properties and magnetocaloric effect connected with ferromagnetic transition in layered van der Waals VI$_3$…

Materials Science · Physics 2020-01-15 Yu Liu , Milinda Abeykoon , C. Petrovic

Two-dimensional (2D) van der Waals (vdW) ferromagnets have emerged as a critical class of quantum materials for next-generation, low-dimensional spintronic devices. In this study, we report a comprehensive study of the transport properties…

Superconductivity · Physics 2026-02-10 Suchanda Mondal , Shubhankar Roy , Poulami Manna , Ravi Prakash Singh

In two-dimensional (2D) magnetic systems, large magnetic anisotropy is needed to stabilize the magnetic order according to Mermin-Wagner theorem. Based on density functional theory (DFT) calculations, we propose that the magnetic…

Materials Science · Physics 2020-11-04 Xuejuan-Dong , Jingyang-You , Zheng Zhang , Bo Gu , Gang Su

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…

Motivated by growing interest in atomically-thin van der Waals magnetic materials, we present an {\it ab initio} theoretical study of the dependence of their magnetic properties on the electron/hole density $\rho$ induced via the electrical…

Strongly Correlated Electrons · Physics 2024-05-24 Guido Menichetti , Matteo Calandra , Marco Polini

Effects of the Verwey transition on the (100) surface of magnetite were studied using scanning tunelling microscopy and spin polarized low-energy electron microsccopy. On cooling through the transition temperature Tv, the initially flat…

We report a comprehensive experimental investigation on the magnetic anisotropy in bulk single crystals of Cr$_2$Ge$_2$Te$_6$, a quasi-two-dimensional ferromagnet belonging to the family of magnetic layered transition metal trichalcogenides…

Strongly Correlated Electrons · Physics 2019-04-10 J. Zeisner , A. Alfonsov , S. Selter , S. Aswartham , M. P. Ghimire , M. Richter , J. van den Brink , B. Büchner , V. Kataev

Recently, the successful synthesis of the pentagonal form of PdTe$_{2}$ monolayer (\emph{p}-PdTe$_{2}$) was reported [Liu~\emph{et al.}, Nature Materials \textbf{23}, 1339 (2024)]. In this work, we present an extensive first-principles…

Materials Science · Physics 2025-01-07 Poonam Sharma , Vaishali Roondhe , Alok Shukla

Layered transition-metal dichalcogenides have attracted great interest in the last few years. Thinned down to the monolayer limit they change from an indirect band structure to a direct band gap in the visible region. Due to the monolayer…

Mesoscale and Nanoscale Physics · Physics 2017-02-01 Jan Kuhnert , Arash Rahimi-Iman , Wolfram Heimbrodt

Magnetism in monolayer (ML) VSe2 has attracted broad interest in spintronics while existing reports have not reached consensus. Using element-specific X-ray magnetic circular dichroism, a magnetic transition in ML VSe2 has been demonstrated…

Alloyed transition metal dichalcogenides provide an opportunity for coupling band engineering with valleytronic phenomena in an atomically-thin platform. However, valley properties in alloys remain largely unexplored. We investigate the…

Mesoscale and Nanoscale Physics · Physics 2020-01-17 Sean M. Oliver , Joshua Young , Sergiy Krylyuk , Thomas L. Reinecke , Albert V. Davydov , Patrick M. Vora

Tantalum diselenide (TaSe$_{2}$) is a metallic transition metal dichalcogenide whose equilibrium structure and vibrational behavior strongly depends on temperature and thickness, including the emergence of charge density wave (CDW) states…

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