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SU(2) Non-Abelian Holonomy and Dissipationless Spin Current in Semiconductors
Shuichi Murakami, Naoto Nagaosa, Shou-Cheng Zhang
Following our previous work [S. Murakami, N. Nagaosa, S. C. Zhang, Science 301, 1348 (2003)] on the dissipationless quantum spin current, we present an exact quantum mechanical cal…
Dissipationless Quantum Spin Current at Room Temperature
Shuichi Murakami, Naoto Nagaosa, Shou-Cheng Zhang
While microscopic laws of physics are invariant under the reversal of the arrow of time, the transport of energy and information in most devices is an irreversible process. It is t…
Competing Orders and Disorder-induced Insulator to Metal Transition in Manganites
Yukitoshi Motome, Nobuo Furukawa, Naoto Nagaosa
Effects of disorder on the two competing phases, i.e., the ferromagnetic metal and the commensurate charge/lattice ordered insulator, are studied by Monte Carlo simulation. The dis…
Geometrical aspects of Gigantic Magneto-Electric effect and Quantum Pump
Ryuichi Shindou, Naoto Nagaosa
We study the Magneto-Electric (ME) effect from the viewpoint of the Berry phase connection and quantum adiabatic charge transport (QAPT). The linear response theory for the electro…