Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/physrevb.48.9462 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Colossal magnetoresistance from spin-polarized polarons in an Ising system.
Proc Natl Acad Sci U S A
December 2024
Stanford Institute for Materials and Energy Sciences, Stanford Linear Accelerator Center (SLAC) National Accelerator Laboratory, Menlo Park, CA 94025.
Recent experiments suggest a new paradigm toward novel colossal magnetoresistance (CMR) in a family of materials EuM[Formula: see text]X[Formula: see text] (M [Formula: see text] Cd, In, Zn; X [Formula: see text] P, As), distinct from the traditional avenues involving Kondo-Ruderman-Kittel-Kasuya-Yosida crossovers, magnetic phase transitions with structural distortions, or topological phase transitions. Here, we use angle-resolved photoemission spectroscopy and density functional theory calculations to explore their origin, particularly focusing on EuCd[Formula: see text]P[Formula: see text]. While the low-energy spectral weight royally tracks that of the resistivity anomaly near the temperature with maximum magnetoresistance ([Formula: see text]) as expected from transport-spectroscopy correspondence, the spectra are completely incoherent and strongly suppressed with no hint of a Landau quasiparticle.
View Article and Find Full Text PDFMultipolar Skyrmion Crystals in Non-Kramers Doublet Systems.
Phys Rev Lett
November 2024
Theoretical Division, T-4 and CNLS, Los Alamos National Laboratory (LANL), Los Alamos, New Mexico 87545, USA.
We study the Kondo lattice model of multipolar magnetic moments interacting with conduction electrons on a triangular lattice. Bond-dependent electron hoppings induce a compasslike anisotropy in the effective Ruderman-Kittel-Kasuya-Yosida interaction between multipolar moments. This unique anisotropy stabilizes multipolar skyrmion crystals at zero magnetic field.
View Article and Find Full Text PDFCollective spin waves in RKKY interlayer-coupled NiFe/Ru/NiFenanowire arrays.
J Phys Condens Matter
June 2024
Cnr-Istituto Officina dei Materiali, Via Alessandro Pascoli, 06123 Perugia, Italy.
We report on a comprehensive investigation of collective spin waves in Ruderman-Kittel-Kasuya-Yosida (RKKY) interlayer-coupled NiFe(10 nm)/Ru(1.0 nm)/ NiFe(10 nm) nanowire (NW) arrays. We employed Brillouin light scattering to probe the field- and wavevector-dependences of the spin-wave frequency spectra.
View Article and Find Full Text PDFDirac-fermion-assisted interfacial superconductivity in epitaxial topological-insulator/iron-chalcogenide heterostructures.
Nat Commun
November 2023
Department of Physics, The Pennsylvania State University, University Park, PA, 16802, USA.
Over the last decade, the possibility of realizing topological superconductivity (TSC) has generated much excitement. TSC can be created in electronic systems where the topological and superconducting orders coexist, motivating the continued exploration of candidate material platforms to this end. Here, we use molecular beam epitaxy (MBE) to synthesize heterostructures that host emergent interfacial superconductivity when a non-superconducting antiferromagnet (FeTe) is interfaced with a topological insulator (TI) (Bi, Sb)Te.
View Article and Find Full Text PDFProbing the strongly correlated magnetic state of CoC nanoparticles at low temperatures usingSR.
J Phys Condens Matter
November 2023
Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India.
CoC nanoparticles (NPs) are amongst transition metal carbides whose magnetic properties have not been well explored. An earlier study (Roy2021375804) showed that a pellet made from CoC NPs exhibits exchange bias (EB) effect below a temperature,= 50 K and a spin glass (SG) feature emerges below= 5 K. In the current study we use magnetic, electrical transport, specific heat, and muon spin rotation (SR) measurements to explore further the magnetic properties of a pellet made with 40 nm diameter pure CoC NPs.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!