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- Apurba Kumar Das, Simone Pisana, +8 authors A. K. Sood
- Nature nanotechnology
- 2008

The recent discovery of graphene has led to many advances in two-dimensional physics and devices. The graphene devices fabricated so far have relied on SiO(2) back gating. Electrochemical top gatingâ€¦ (More)

- Matthias H. Hettler, A. N. Tahvildar-Zadeh, Mark Jarrell, Harini Krishnamurthy
- 1998

We introduce an extension of the dynamical mean-field approximation ~DMFA! that retains the causal properties and generality of the DMFA, but allows for systematic inclusion of nonlocal corrections.â€¦ (More)

Manganites of the LA1â€“xCaxMnO3 family show a variety of new and poorly understood electronic, magnetic and structural effects. Here we outline a new approach recently proposed by us, where we argueâ€¦ (More)

- J. K. Freericks, Harini Krishnamurthy, Th Pruschke
- Physical review letters
- 2009

The theory for time-resolved, pump-probe, photoemission spectroscopy and other pump-probe experiments is developed. The formal development is completely general, incorporating all of theâ€¦ (More)

- Arti Garg, Harini Krishnamurthy, Mohit Randeria
- Physical review letters
- 2006

We analyze the effects of the on-site Coulomb repulsion U on a band insulator using dynamical mean field theory (DMFT). We find the surprising result that the gap is suppressed to zero at a criticalâ€¦ (More)

Nonequilibrium calculations in the presence of an electric field are usually performed in a gauge, and need to be transformed to reveal the gauge-invariant observables. In this work, we discuss theâ€¦ (More)

- James K. Freericks, Harini Krishnamurthy, Pierre Carrier, Yousef Saad
- 2010 DoD High Performance Computing Modernizationâ€¦
- 2010

We describe techniques that we are implementing to move inhomogeneous dynamical mean-field theory simulations from two-to three-dimensions. Two-dimensional simulations typically run on 2,000 --â€¦ (More)

The dynamical cluster approximation ~DCA! is modified to include disorder. The DCA incorporates nonlocal corrections to local approximations such as the coherent potential approximation ~CPA! byâ€¦ (More)

- Siti Roshayu Hassan, Antoine Georges, Harini Krishnamurthy
- Physical review letters
- 2005

Close to the Mott transition, lattice degrees of freedom react to the softening of electron degrees of freedom. This results in a change of lattice spacing, a diverging compressibility, and aâ€¦ (More)

J. K. Freericks1,*, H. R. Krishnamurthy1,2,3, Yizhi Ge1, A. Y. Liu1, and Th. Pruschke4 1 Department of Physics, Georgetown University, Washington , DC 20057 USA 2 Centre for Condensed Matter Theory,â€¦ (More)