Results 251 to 260 of about 1,839,565 (301)

Soft Modes and Mode Splitting in Paramagnetic TbP§

1980
In contrast to spin-only systems the paramagnetic phases of systems with crystal field split ground multiplets exhibit magnetic excitations of finite energy. In the presence of a magnetic exchange coupling the excitons will propagate through the lattice. A measurement of the dispersion allows in principle an insight into the exchange interaction, which
Knorr, K., Loidl, Alois, Kjems, J. K.
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The spectrum of vibration modes in soft opals

The Journal of Chemical Physics, 2005
Numerous vibrational modes of spherical submicrometer particles in fabricated soft opals are experimentally detected by Brillouin light scattering and theoretically identified by their spherical harmonics by means of single-phonon scattering-cross-section calculations. The particle size polydispersity is reflected in the line shape of the low-frequency
Cheng, W., Wang, J., Jonas, U., Steffen, W., Fytas, G., Penciu, R., Economou, E.   +6 more
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Conformational Changes in DNA and Soft Modes

Journal of Biomolecular Structure and Dynamics, 1985
In this paper we explore the applicability of the soft mode approach to study the conformational transitions of DNA. It is believed that the A-B conformation change is a first order transition. Soft mode theories only apply to the initial stages of a first order transition.
K V, Devi Prasad, E W, Prohofsky
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Negative-Mode Soft-Tissue Xeroradiography

Radiology, 1977
Positive-mode xeroradiography is an excellent method of visualizing soft-tissue structures in mammography and other procedures; however, toner deletions over a large area may preclude adequate delineation of the soft tissues near high-density structures such as bone.
F A, Osterman, G H, Zeman, G U, Rao, B, Gayler, B G, Kirk, A E, James   +5 more
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Soft phonon mode and mode coupling in SbSI

Solid State Communications, 1970
Abstract In ferroelectric SbSI the soft mode behaviour is studied by means of Raman scattering. It is observed that coupling occurs between the soft mode and a lower-frequency mode which leads to level repulsion between the two Γ 1 one-phonon states and intensity between the modes.
G. Harbeke, E.F. Steigmeier, R.K. Wehner
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Charge density glass dynamics – Soft potentials and soft modes

Physica B: Condensed Matter, 2012
An universal fingerprint of glasses has been found in low-temperature thermodynamic properties of charge/spin density wave (C/SDW) systems. Deviations from the well-known Debye, elastic continuum prediction for specific heat (flat Cp/T3 plot) appear as two anomalies ; the upturn below 1 K and a broad bump at T~10 K (named Boson peak in glasses).
Biljaković, K., Staresinic, D., Lasjaunias, Jean-Claude, Remenyi, Gyorgy, Melin, Régis, Monceau, Pierre, Sahling, S.   +6 more
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The soft modes of melting

Physics Letters A, 2004
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Soft Law as a New Mode of Governance

SSRN Electronic Journal, 2011
The paper analyses soft law as a mode of EU governance. European soft law can be qualified as a relatively ‘new’ mode, notably due to its dramatic proliferation and the increasing involvement of private actors. The concept of ‘soft law’ is viable on the premiss that normativity may be graduated (‘the continuum view’).
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Soft modes in relaxor ferroelectrics

Phase Transitions, 1981
Abstract The fact that the polarization-related electrostrictive coefficients Q in the relaxor type ferro-electrics are almost an order of magnitude smaller than in most normal ferroelectric perovskites can be explained under the assumption that the temperature dependence of the soft-mode TO phonon frequency is given as ω2 TO = A(T — Tc ), where the ...
K. Uchino, S. Nomura, L E. Cross, R. E. Newnham   +3 more
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Soft mode behavior in RbH2AsO4

Physics Letters A, 1973
Abstract The low frequency xy Raman spectra of RbH2AsO4 are reported as a function of temperature in the paraelectric phase and are fitted to a coupled damped harmonic oscillator model to yield the soft mode behavior of the ferroelectric model.
R.C. Leung, R.P. Lowndes, N.E. Tornberg
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