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- Sangeeta Ray Banerjee, Ramjeevan Singh, Viviana Pardo, W. E. Pickett
- Physical review letters
- 2009

We develop a tight-binding model description of semi-Dirac electronic spectra, with highly anisotropic dispersion around point Fermi surfaces, recently discovered in electronic structure calculationsâ€¦ (More)

Motivated by the wide ranging experimental results on the conductivity of DNA, we have investigated extraordinary configurations and chemical environments in which DNA might become a true molecularâ€¦ (More)

- Robert A Applegate, Natha Robert Hayre, Ramjeevan Singh, T. Lin, A. G. R. Day, M. J. P. Gingras
- Physical review letters
- 2012

We use numerical linked-cluster expansions to compute the specific heat C(T) and entropy S(T) of a quantum spin ice Hamiltonian for Yb2Ti2O7 using anisotropic exchange interactions, recentlyâ€¦ (More)

- Natha Robert Hayre, Kenneth A. Ross, +4 authors M. J. P. Gingras
- 2014

The continuing interest in condensed matter physics in the properties of quantum systems which exhibit exotic properties such as emergent hidden or topological order, quantum entanglement orâ€¦ (More)

- Anders W. Sandvik, StÃ©phane Daul, Ramjeevan Singh, D. J. Scalapino
- Physical review letters
- 2002

We present quantum Monte Carlo results for a square-lattice S=1/2 XY model with a standard nearest-neighbor coupling J and a four-spin ring exchange term K. Increasing K/J, we find that the groundâ€¦ (More)

- Ramjeevan Singh, Thanga Raj Chelliah, Deepak Khare, U. S. Ramesh
- 2016 IEEE 7th Power India Internationalâ€¦
- 2016

Electric propulsion system integrated with doubly-fed asynchronous motor contributes efficient characteristics and flexibility in operation. However, in perception of energy saving and full-scaleâ€¦ (More)

- P. Babkevich, Vamshi M. Katukuri, +9 authors Henrik Moodysson RÃ¸nnow
- Physical review letters
- 2016

Sr_{2}CuTeO_{6} presents an opportunity for exploring low-dimensional magnetism on a square lattice of S=1/2â€‰â€‰Cu^{2+} ions. We employ abÂ initio multireference configuration interaction calculationsâ€¦ (More)

- L. D. C. Jaubert, Owen Benton, +4 authors Michel J. P. Gingras
- Physical review letters
- 2015

If magnetic frustration is most commonly known for undermining long-range order, as famously illustrated by spin liquids, the ability of matter to develop new collective mechanisms in order to fightâ€¦ (More)

- Nikolay Tsyrulin, Tommaso Pardini, +7 authors Michel Kenzelmann
- Physical review letters
- 2009

We have studied the two-dimensional S=1/2 square-lattice antiferromagnet Cu(pz)_{2}(ClO4)_{2} (where pz denotes pyrazine), using neutron inelastic scattering and series expansion calculations. Weâ€¦ (More)

Numerous human diseases are associated with conformational change and aggregation of proteins, including Alzheimerâ€™s, Parkinsonâ€™s, prion diseases (such as mad cow disease), familial amyotrophicâ€¦ (More)