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pro vyhledávání: '"Chopra, Harsh Deep"'
Covalent molecules are characterized by directed bonds, which provide stability-of-form to the molecules relative atomic positions. In contrast, bulk metals are characterized by delocalized bonds, where a large number of resonance structures ensure t
Externí odkaz:
http://arxiv.org/abs/1305.5582
Emergence of various properties is mapped in a two-component system from quantum to mesoscale, using Au-Ag alloys. Experiments are designed so that composition is the primary 'interaction' guiding the evolution of properties across 'emergent length s
Externí odkaz:
http://arxiv.org/abs/1205.0488
Existence of anisotropic Curie temperature materials [E. R. Callen, Phys. Rev. 124, 1373 (1961)] is a longstanding prediction - materials that become paramagnetic along certain crystal directions at a lower temperature while remaining magnetically or
Externí odkaz:
http://arxiv.org/abs/1203.1475
Intensive or size-invariant physical properties are well known to become size-dependent when the bulk material is reduced to the nanometer scale. Using silver, the present study shows a remarkable emergent characteristic of extensive properties as th
Externí odkaz:
http://arxiv.org/abs/1110.4908
Previously, the authors reported direct evidence of channel saturation and conductance quantization in atomic-sized gold constrictions through mechanical perturbation studies, and also showed that peaks in conductance histograms are insufficient in e
Externí odkaz:
http://arxiv.org/abs/1104.1147
Notwithstanding the discreteness of metallic constrictions, it is shown that the finite elasticity of stable, single-atom gold constrictions allows for a continuous and reversible change in conductance, thereby enabling observation of channel saturat
Externí odkaz:
http://arxiv.org/abs/1008.0886
Large ballistic magnetoresistance (BMR) has been measured in Ni single-atom conductors electrodeposited between microfabricated thin films. These measurements irrefutably eliminate any magnetostriction related artifacts in the BMR effect.
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Externí odkaz:
http://arxiv.org/abs/cond-mat/0404348
Autor:
Hua, Susan Z., Chopra, Harsh Deep
In the present study, a prototypical reaction in biochemistry involving a well-known bio-molecule called imidazole (C3H4N2) and its known affinity towards transition metals (such as Co, Ni, Cu, Fe, etc.) has been used to illustrate and exemplify the
Externí odkaz:
http://arxiv.org/abs/physics/0401114
A fundamental question in the study of ferromagnetic shap ememory alloys is the nature of magnetoelastic coupling and the extent it drives the structural transformation. This question also holds the key to developing new and optimized alloys that com
Externí odkaz:
http://arxiv.org/abs/cond-mat/0312343
Autor:
Chopra, Harsh Deep1, Wuttig, Manfred2
Publikováno v:
Nature. 5/21/2015, Vol. 521 Issue 7552, p340-343. 4p.