Graphene is a rapidly rising star on the horizon of materials science and\ncondensed matter physics. This strictly twodimensional material exhibits\nexceptionally high crystal and electronic quality and, despite its short\nhistory, has already…
Condensed Matter Physics
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This article reviews the basic theoretical properties of graphene, a\ntwodimensional allotrope of carbon, with unusual electronic properties. The\nelementary excitations are linearly dispersing Dirac fermions with vanishing\nelectronic density of…

Spintronics, or spin electronics, involves the study of active control and manipulation of spin degrees of freedom in solidstate systems. This article reviews the current status of this subject, including both recent advances and wellestablished…

Topological insulators are electronic materials that have a bulk band gap like an ordinary insulator, but have protected conducting states on their edge or surface. The 2D topological insulator is a quantum spin Hall insulator, which is a close…

Quantum electrodynamics (resulting from the merger of quantum mechanics and relativity theory) has provided a clear understanding of phenomena ranging from particle physics to cosmology and from astrophysics to quantum chemistry. The ideas…

Certain insulators have exotic metallic states on their surfaces. These states are formed by topological effects that also render the electrons travelling on such surfaces insensitive to scattering by impurities. Such topological insulators may…

Metalinsulator transitions are accompanied by huge resistivity changes, even over tens of orders of magnitude, and are widely observed in condensedmatter systems. This article presents the observations and current understanding of the…

Topological insulators are new states of quantum matter which can not be adiabatically connected to conventional insulators and semiconductors. They are characterized by a full insulating gap in the bulk and gapless edge or surface states which are…

This review describes a new paradigm of electronics based on the spin degree of freedom of the electron. Either adding the spin degree of freedom to conventional chargebased electronic devices or using the spin alone has the potential advantages of…

We study the effects of spin orbit interactions on the low energy electronic structure of a single plane of graphene. We find that in an experimentally accessible low temperature regime the symmetry allowed spin orbit potential converts graphene…

From a theory of Hohenberg and Kohn, approximation methods for treating an inhomogeneous system of interacting electrons are developed. These methods are exact for systems of slowly varying or high density. For the ground state, they lead to…

Insights into conducting research and the writing of scientific papers are given by Prof. Whitesides in this short essay. The manuscript and its guidelines has been circulated within the Whitesides' research group since 1989.

We describe monocrystalline graphitic films, which are a few atoms thick but are nonetheless stable under ambient conditions, metallic, and of remarkably high quality. The films are found to be a twodimensional semimetal with a tiny overlap between…

Choosing good problems is essential for being a good scientist. But what is a good problem, and how do you choose one? The subject is not usually discussed explicitly within our profession. Scientists are expected to be smart enough to figure it out…

Graphene is the twodimensional (2d) building block for carbon allotropes of every other dimensionality. It can be stacked into 3d graphite, rolled into 1d nanotubes, or wrapped into 0d fullerenes. Its recent discovery in free state has finally…

When electrons are confined in twodimensional materials, quantummechanically enhanced transport phenomena such as the quantum Hall effect can be observed. Graphene, consisting of an isolated single atomic layer of graphite, is an ideal realization…

Problems associated with largescale pattern growth of graphene constitute one of the main obstacles to using this material in device applications. Recently, macroscopicscale graphene films were prepared by twodimensional assembly of graphene…

Topological insulators are new states of quantum matter in which surface states residing in the bulk insulating gap of such systems are protected by timereversal symmetry. The study of such states was originally inspired by the robustness to…

Graphene is a wonder material with many superlatives to its name. It is the thinnest known material in the universe and the strongest ever measured. Its charge carriers exhibit giant intrinsic mobility, have zero effective mass, and can travel for…

Recent theory predicted that the quantum spin Hall effect, a fundamentally new quantum state of matter that exists at zero external magnetic field, may be realized in HgTe/(Hg,Cd)Te quantum wells. We fabricated such sample structures with low…
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