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Abstract / Description of output
Inelastic x-ray scattering experiments have been performed on incommensurately modulated Te-III at high pressure and reveal a pronounced phonon anomaly. The anomaly is reproduced in first-principles lattice dynamics calculations of unmodulated, body-centered monoclinic (bcm) Te, which is shown to be dynamically unstable. The calculated Fermi surface of bcm Te exhibits surprisingly effective nesting for a simple, electronically three-dimensional metal. The combined experimental and theoretical results corroborate recent proposals that the modulated crystal structure of Te-III and other chalcogens is the manifestation of a pressure-induced charge-density wave state.
Original language | English |
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Article number | 035501 |
Pages (from-to) | - |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 102 |
Issue number | 3 |
DOIs | |
Publication status | Published - 23 Jan 2009 |
Keywords / Materials (for Non-textual outputs)
- CHARGE-DENSITY-WAVE
- HIGH-PRESSURE
- INSTABILITY
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Dive into the research topics of 'Origin of the Incommensurate Modulation in Te-III and Fermi-Surface Nesting in a Simple Metal'. Together they form a unique fingerprint.Projects
- 1 Finished
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Lattice dynamical, electronic and structural properties of complex metals at extreme conditions. Advanced Fellowship
1/10/07 → 30/09/12
Project: Research