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Two-dimensional materials are an emerging class of new materials with a wide range of electrical and optical properties and potential applications. Single-layer structures of semiconducting transition metal dichalcogenides are gaining…

We present a quantitative and comparative study of magnetic field driven domain wall depinning transition in different ferromagnetic ultrathin films over a wide range of temperature. We reveal a universal scaling function accounting for…

无序系统与神经网络 · 物理学 2017-06-07 Rebeca Diaz Pardo , Williams Savero Torres , Alejandro Kolton , Sebastian Bustingorry , Vincent Jeudy

Compensated ferrimagnets are promising materials for fast spintronic applications based on domain wall motion as they combine the favourable properties of ferromagnets and antiferromagnets. They inherit from antiferromagnets immunity to…

The propagation of domain walls in a ferromagnetic film is largely determined by domain wall pinning at defects in the material. In this letter we map the effective potential landscape for domain wall pinning in Permalloy films by raster…

介观与纳米尺度物理 · 物理学 2016-06-15 Robert Badea , Jesse Berezovsky

A simple electronic experiment with a field effect transistor type microstructure is suggested. The thin superconductor layer is the source-drain channel of the layered structure where an AC current is applied. It is necessary to measure…

超导电性 · 物理学 2009-09-29 Todor Mishonov , Martin Stoev

PtTe2 and PtSe2 with trigonal structure have attracted extensive research interests since the discovery of type-II Dirac fermions in the bulk crystals. The evolution of the electronic structure from bulk 3D topological semimetal to 2D…

Ferromagnetism was observed in a Pt(100) ultrathin film deposited on a SrTiO3(100) substrate. The ferromagnetism, which appears in films with thicknesses of 2.2-4.4 nm, periodically changes with a period of approximately 1 nm (5-6…

We consider thin superconducting (S) films of thickness d $\ll \xi_{0}$, sandwiched between two ferromagnetic semiconducting insulators (FI) with differently orientated magnetizations - the FI-S-FI system. We calculate the dependence of the…

凝聚态物理 · 物理学 2009-10-31 Miodrag L. Kulic , Martin Endres

We present angle-resolved photoemission spectroscopy results for thin films of the three-dimensional manganese perovskite La$_{1-x}$Sr$_{x}$MnO$_{3}$. We show that the transition temperature ($T_c$) from the paramagnetic insulating to…

强关联电子 · 物理学 2008-04-23 M. Shi , M. C. Falub , P. R. Willmott , J. Krempasky , R. Herger , L. Patthey , K. Hricovini , C. Falub , M. Schneider

The specific heat and thermodynamics of ${\rm Fe}_2{\rm P}$ single-crystals around the first order paramagnetic (PM) to ferromagnetic (FM) phase transition at $T_{\rm C} = 217 \,{\rm K}$ are empirically investigated. The magnitude and…

材料科学 · 物理学 2014-11-11 M. Hudl , D. Campanini , L. Caron , V. Höglin , M. Sahlberg , P. Nordblad , A. Rydh

Numerous few-electron atomic systems are considered which can be used effectively for observing a potential variation of the fine-structure constant $\alpha$ and the electron-proton mass ratio $m_e/m_p$. We examine optical magnetic dipole…

We have studied flux pinning in thin superconducting Pb films covering a triangular array of submicron magnetic Au/Co/Au dots with in-plane magnetization. The rectangular dots can have two possible in-plane magnetic states: a single-domain…

Atomically thin polycrystalline transition-metal dichalcogenides (TMDs) are relevant to both fundamental science investigation and applications. TMD thin-films present uniquely difficult challenges to effective nanoscale crystalline…

介观与纳米尺度物理 · 物理学 2020-01-31 Brian Shevitski , Christopher T. Chen , Christoph Kastl , Tevye Kuykendall , Adam Schwartzberg , Shaul Aloni , Alex Zettl

Layered quasi-two-dimensional transition metal dichalcogenides (TMDCs), which can be readily made in ultrathin films, offer excellent opportunities for studying how dimensionality affects electronic structure and physical properties. Among…

Though the electrical responses of the various polymorphs found in ferroelectric polycrystalline thin film HfO$_2$ are now well characterized, little is currently understood of this novel material's grain sub-structure. In particular, the…

材料科学 · 物理学 2017-09-26 Everett D. Grimley , Tony Schenk , Thomas Mikolajick , Uwe Schroeder , James M. LeBeau

The knowledge of how the magnetization looks inside a ferromagnet is often hindered by the limitations of the available experimental methods that are sensitive only to the surface regions or limited in spatial resolution. We report the 3D…

We perform a magneto-optical study of a two-dimensional electron systems (2DES) in the regime of the Stoner ferromagnetic instability for even quantum Hall filling factors on Mg$_x$Zn$_{1-x}$O/ZnO heterostructures. Under conditions of…

介观与纳米尺度物理 · 物理学 2017-12-06 A. B. Van'kov , B. D. Kaysin , I. V. Kukushkin

Recent theoretical analysis of spatially-nonuniform modes of the thermomagnetic instability in superconductors [Phys. Rev. B 70, 224502 (2004)] is generalized to the case of a thin film in a perpendicular applied field. We solve the thermal…

超导电性 · 物理学 2009-11-11 D. V. Denisov , A. L. Rakhmanov , D. V. Shantsev , Y. M. Galperin , T. H. Johansen

We investigated domain kinetics by measuring the polarization switching behaviors of polycrystalline Pb(Zr,Ti)O$_{3}$ films, which are widely used in ferroelectric memory devices. Their switching behaviors at various electric fields and…

材料科学 · 物理学 2009-11-13 J. Y. Jo , H. S. Han , J. -G. Yoon , T. K. Song , S. -H. Kim , T. W. Noh

Deformations of skyrmions arising from the presence of more than one magnetic sublattice lead to their massive dynamics in ferrimagnets as compared to the massless dynamics in 2D ferromagnets. This results in the gyroscopic motion of…

介观与纳米尺度物理 · 物理学 2026-04-10 Dmitry A. Garanin , Eugene M. Chudnovsky