Magnetic field investigation of the acoustic impedance resonance near 2Δ(T) in 3He-A |
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| Authors: | MW Meisel BS Shivaram Bimal K Sarma JB Ketterson WP Halperin |
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| Institution: | Department of Physics and Astronomy and Materials Research Center, Northwestern University, Evanston, IL 60201, USA |
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| Abstract: | The acoustic impedance resonance near 2Δ(T) in 3He-A has been studied in magnetic fields up to H = 0.72 T with H?q?. It now appears that the resonance reported by Meisel et al. is independent of ?, q? orientation and satisfies ω(T) = aξΔ(T), where Δ(T) is the maximum in the weak coupling axial state gap and aξ = 1.8. |
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