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Theory Of Josephson-Type Oscillations In A Moving Charge-Density Wave - Errata, S. E. Barnes, A. Zawadowski
Theory Of Josephson-Type Oscillations In A Moving Charge-Density Wave - Errata, S. E. Barnes, A. Zawadowski
Physics Articles and Papers
Errata to Original Article: S. E. Barnes and A. Zawadowski, Theory of Josephson-Type Oscillations in a Moving Charge-Density Wave, Physical Review Letters, 51, 1499 (1983).
Theory Of Josephson-Type Oscillations In A Moving Charge-Density Wave, S. E. Barnes, A. Zawadowski
Theory Of Josephson-Type Oscillations In A Moving Charge-Density Wave, S. E. Barnes, A. Zawadowski
Physics Articles and Papers
A theory of Josephson-type phenomena is presented, in which the two macroscopic quantum states are the two components of an incommensurate charge-density wave with opposite wave vectors. The Fermi levels of these two states are split for a moving charge-density wave and impurity scattering induces quantum oscillations. Such oscillations may be responsible for the observed narrow-band noise in materials such as NbSe3 and TaS3.
Non-Mean-Field Interpretation Of The Irreversibility Line In Spin-Glasses, A. P. Malozemoff, S. E. Barnes, B. Barbara
Non-Mean-Field Interpretation Of The Irreversibility Line In Spin-Glasses, A. P. Malozemoff, S. E. Barnes, B. Barbara
Physics Articles and Papers
Susceptibility data on an amorphous GdAl spin-glass show an irreversibility onset line t=-A-H2/φ- and a susceptibility crossover line t=+A+H2/φ+ (t is reduced temperature; H is field). The exponents φ are both close to 3, and the amplitudes A differ only by a factor of 2. In contrast to earlier explanations of the irreversibility in terms of a de Almeida-Thouless mean-field instability, here both crossovers are explained in terms of a non-mean-field scaling theory.
Magnetic Resonance In The Spin-Glass (Lagd)Al2, M. Zomack, K. Baberschke, S. E. Barnes
Magnetic Resonance In The Spin-Glass (Lagd)Al2, M. Zomack, K. Baberschke, S. E. Barnes
Physics Articles and Papers
ESR has been measured in the spin-glass (La1-xGdx)Al2, 1≤x≤15 at.% for 1, 3, 9, and 35 GHz, corresponding to different applied magnetic fields and in the temperature range of 100 mK to 30 K. The comparison of data for different frequencies shows that the linewidth depends very much on the frequency and/or field and therefore the temperature Tmin of the linewidth minimum is not an intrinsic parameter and the shift of the resonance position is almost independent of frequency. The former effect is analyzed and theoretically explained in terms of the temperature dependence …
Γ8(3) Resonance In Esr Of (Ery)Al2 Single Crystals, U. Döbler, K. Baberschke, S. E. Barnes
Γ8(3) Resonance In Esr Of (Ery)Al2 Single Crystals, U. Döbler, K. Baberschke, S. E. Barnes
Physics Articles and Papers
Angle-dependent ESR results are given for 500-, 2500-, and 5000-ppm Er-doped YAl2 single crystals. An almost perfect analysis of the X- and Q-band data is achieved if the admixture of the first excited state Γ8(2) into the ground state Γ8(3) via the Zeeman interaction is taken into consideration. This enables us to determine the crystal electric field (CEF) parameter x=-0.322(20) and W=-0.29(2) K. The g-value shift yields N(EF)JΔg=+0.09(5) and the thermal broadening of the linewidth |N(EF)JΔH|=0.059(5). The precision of the experimental data allows, in principle, the determination …