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Altermagnetism in Folded Iron Chain Systems
Ling-Fang Lin, Yang Zhang, Satoshi Okamoto +3
Altermagnetism, a moment-compensated magnetism with momentum-dependent spin splitting, has so far been realized primarily in Néel-type antiferromagnets. Here, we demonstrate alterm…
Novel phenomena in transition-metal oxide thin films and heterostructures with strong correlations and spin-orbit coupling
Satoshi Okamoto, Narayan Mohanta, Ho Nyung Lee +2
Transition-metal oxides have been a central subject of condensed matter physics for decades. In addition to novel electronic states driven by the influence of strong correlation, r…
First-principles study of the low-temperature charge density wave phase in the quasi-one-dimensional Weyl chiral compound (TaSe)I
Yang Zhang, Ling-Fang Lin, Adriana Moreo +2
Using {\it ab initio} density functional theory, we study the lattice phase transition of quasi-one-dimensional (TaSe)I. In the undistorted state, the strongly anisotropic…
Quasi-one-dimensional ferroelectricity and piezoelectricity in WO halogens
Ling-Fang Lin, Yang Zhang, Adriana Moreo +2
A series of oxytetrahalides WO (: a halogen element) that form quasi-one-dimensional chains is investigated using first-principles calculations. The crystal structures, ele…
Frustrated Dipole Order Induces Noncollinear Proper Ferrielectricity in Two Dimensions
Ling-Fang Lin, Yang Zhang, Adriana Moreo +2
Within Landau theory, magnetism and polarity are homotopic, displaying a one-to-one correspondence between most physical characteristics. However, despite widely reported noncollin…
Exchange bias driven by the Dzyaloshinskii-Moriya interaction and ferroelectric polarization at G-type antiferromagnetic perovskite interfaces
Shuai Dong, Kunihiko Yamauchi, Seiji Yunoki +6
Exchange bias is usually rationalized invoking spin pinning effects caused by uncompensated antiferromagnetic interfaces. However, for compensated antiferromagnets other extrinsic…
Multi-Orbital Lattice Model for (Ga,Mn)As and Other Lightly Magnetically Doped Zinc-Blende-Type Semiconductors
A. Moreo, Y. Yildirim, G. Alvarez
We present a Hamiltonian in real space which is well suited to study numerically the behavior of holes introduced in III-V semiconductors by Mn doping when the III ion is re…
The Crossover from Impurity to Valence Band in Diluted Magnetic Semiconductors: The Role of the Coulomb Attraction by Acceptor
F. Popescu, C. Şen, E. Dagotto +1
The crossover between an impurity band (IB) and a valence band (VB) regime as a function of the magnetic impurity concentration in models for diluted magnetic semiconductors (DMS)…
Critical Temperatures of a Two-Band Model for Diluted Magnetic Semiconductors
F. Popescu, Y. Yildirim, G. Alvarez +2
Using Dynamical Mean Field Theory (DMFT) and Monte Carlo (MC) simulations, we study the ferromagnetic transition temperature Tc of a two-band model for Diluted Magnetic Semiconduct…
Study of the One- and Two-Band Models for Colossal Magnetoresistive Manganites Using the Truncated Polynomial Expansion Method
C. Sen, G. Alvarez, Y. Motome +5
Considerable progress has been recently made in the theoretical understanding of the colossal magnetoresistance (CMR) effect in manganites. The analysis of simple models with two c…