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Chiral Decomposition in the Electronic Structure of Graphene Multilayers
Hongki Min, A. H. MacDonald
We show that the low-energy electronic structure of arbitrarily stacked graphene multilayers with nearest-neighbor interlayer tunneling consists of chiral pseudospin doublets. Alth…
Superfluid Density in High- Superconductors: Enabled by Holes or Suppressed by Electrons?
Wei-Cheng Lee, Jairo Sinova, A. A. Burkov +2
The critical temperature of an underdoped cuprate superconductor is limited by its phase stiffness . In this Letter we argue that the dependence of on doping should be u…
Current-Induced Torques in Magnetic Metals: Beyond Spin Transfer
P. M. Haney, R. A. Duine, A. S. Nunez +1
Current-induced torques on ferromagnetic nanoparticles and on domain walls in ferromagnetic nanowires are normally understood in terms of transfer of conserved spin angular momentu…
Effect of the long-range interaction in transport through one-dimensional nanoparticle arrays
E. Bascones, J. A. Trinidad, V. Estevez +1
We analyze the effect of the long-range interaction on the transport properties through ordered and disordered one-dimensional metallic nanoparticle arrays. We discuss how the thre…
Electronic correlations and disorder in transport through one-dimensional nanoparticle arrays
E. Bascones, V. Estevez, J. A. Trinidad +1
We analyze and clarify the transport properties of a one-dimensional metallic nanoparticle array with interaction between charges restricted to charges placed in the same conductor…
Hubbard-Thomas-Fermi Theory of Transition Metal Oxide Heterostructures
Wei-Cheng Lee, A. H. MacDonald
We demonstrate that the charge distributions in Hubbard-model representations of transition metal oxide heterojucntions can be described by a Thomas-Fermi theory in which the energ…
The Role of Electron-electron Interactions in Graphene ARPES Spectra
Marco Polini, Reza Asgari, Giovanni Borghi +3
We report on a theoretical study of the influence of electron-electron interactions on ARPES spectra in graphene that is based on the random-phase-approximation and on graphene's m…
Theory of the Pseudospin Resonance in Semiconductor Bilayers
Saeed H. Abedinpour, Marco Polini, A. H. MacDonald +3
The pseudospin degree of freedom in a semiconductor bilayer gives rise to a collective mode analogous to the ferromagnetic resonance mode of a ferromagnet. We present a theory of t…
Electronic Interface Reconstruction at Polar-Nonpolar Mott Insulator Heterojunctions
Wei-Cheng Lee, A. H. MacDonald
We report on a theoretical study of the electronic interface reconstruction (EIR) induced by polarity discontinuity at a heterojunction between a polar and a nonpolar Mott insulato…
Transition-metal dimers and physical limits on magnetic anisotropy
Tor O. Strandberg, Carlo. M. Canali, Allan H. MacDonald
Recent advances in nanoscience have raised interest in the minimum bit size required for classical information storage, i.e. for bistability with suppressed quantum tunnelling and…
Functional Keldysh Theory of Spin Torques
R. A. Duine, A. S. Nunez, Jairo Sinova +1
We present a microscopic treatment of current-induced torques and thermal fluctuations in itinerant ferromagnets based on a functional formulation of the Keldysh formalism. We find…
Optical Control of Topological Quantum Transport in Semiconductors
Wang Yao, A. H. MacDonald, Qian Niu
Intense coherent laser radiation red-detuned from absorption edge can reactively activate sizable Hall type charge and spin transport in n-doped paramagnetic semiconductors as a co…