Download Magnetism and Transport Phenomena in Spin-Charge Coupled by Hiroaki Ishizuka PDF

By Hiroaki Ishizuka

In this thesis, magnetism and delivery phenomena in spin-charge coupled structures on pissed off lattices are theoretically investigated, concentrating on Ising-spin Kondo lattice versions and utilizing a mixture of Monte Carlo simulation and different innovations reminiscent of variational calculations and perturbation concept. The emphasis of the examine is on how the cooperation of spin-charge coupling and geometrical frustration impacts the thermodynamic homes of the Kondo lattice versions; it provides the emergence of assorted novel magnetic states, comparable to the partial sickness, loop-liquid, and spin-cluster states. The thesis additionally finds that the magnetic and digital states and shipping homes of those versions exhibit strange positive factors, akin to Dirac half-metals, anomalous corridor insulators, and spin corridor results. examine of novel magnetic states and unique delivery phenomena in Kondo lattice platforms is a box experiencing speedy development. The interaction of cost and spin levels of freedom very likely provides upward push to numerous novel stages and delivery phenomena that are concerning strongly correlated electrons, annoyed magnetism, and topological states of matter.

The effects offered during this thesis comprise numerical calculations which are unfastened from approximations. for this reason, they supply trustworthy reference values, either for learning magnetism and transports of comparable versions and for experimentally exploring novel states of topic in metal magnets.

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Additional info for Magnetism and Transport Phenomena in Spin-Charge Coupled Systems on Frustrated Lattices

Sample text

We show that the kagome-ice insulator exhibits finite Hall conductivity. In the last three chapters, Chaps. 7, 8, and 10, we study spin-ice type Ising-spin Kondo lattice models on a pyrochlore lattice. In Chap. 7, we show the magnetic and electronic properties in the intermediate coupling region, where the coupling between the electrons and spins is weaker than the bandwidth of free electrons. 7 Structure of This Thesis 25 hand, in Chap. 8, we present emergence of an interesting intermediate phase in the strong coupling limit of the Kondo lattice model.

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Soc. Jpn. 73, 2845 (2004) S. Iguchi, N. Hanasaki, N. Takeshita, C. Terakura, Y. Taguchi, H. Takagi, Y. Tokura, Phys. Rev. Lett. 102, 136407 (2009) A. Ikeda, H. Kawamura, J. Phys. Soc. Jpn. 77, 073707 (2008) T. Kasuya, Prog. Theor. Phys. 16, 45 (1956) T. Y. -W. Cheong, Phys. Rev. Lett. 84, 1998 (2000) M. Kohmoto, Ann. Phys. P. Landau, Phys. Rev. B 27, 5604 (1983) D. M. Goldbart, Phys. Rev. B 45, 13544 (1992) Y. Machida, S. Nakatsuji, Y. Maeno, T. Tayama, T. Sakakibara, S. Onoda, Phys. Rev. Lett.

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