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Spin current and magneto-electric effect in non-collinear magnets
Hosho Katsura, Naoto Nagaosa, Alexander V. Balatsky
A new microscopic mechanism of the magneto-electric (ME) effect based on the spin supercurrent is theoretically presented for non-collinear magnets. The close analogy between the s…
Doping a Mott Insulator: Physics of High Temperature Superconductivity
Patrick A. Lee, Naoto Nagaosa, Xiao-Gang Wen
This article reviews the effort to understand the physics of high temperature superconductors from the point of view of doping a Mott insulator. The basic electronic structure of t…
Anisotropic Electron-Phonon Coupling Uncovered By Angle-Resolved Photoemission
T. P. Devereaux, T. Cuk, Z. -X. Shen +1
Recently there has been an accumulation of experimental evidence in the high temperature superconductors suggesting the relevance of electron-phonon coupling in these materials. Th…
Quantum Versus Jahn-Teller Orbital Physics in YVO and LaVO
Zhong Fang, Naoto Nagaosa
We argue that the large Jahn-Teller (JT) distortions in YVO and LaVO should suppress the quantum orbital fluctuation. The unusual magnetic properties can be well explained…
Anomalous Hall Effect and Skyrmion Number in Real- and Momentum-space
Masaru Onoda, Gen Tatara, Naoto Nagaosa
We study the anomalous Hall effect (AHE) for the double exchange model with the exchange coupling being smaller than the bandwidth for the purpose of clarifying the f…
Entropy-Driven Reentrant Behavior in CMR Manganites
Nobuo Furukawa, Yukitoshi Motome, Naoto Nagaosa
We discuss the origin of the reentrant behaviors of insulating states above the Curie temperature of the colossal magnetoresistance manganites. We consider a system where charge or…