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Weakly Pinned Bose Glass vs. Mott Insulator Phase in Superconductors | | Carsten Wengel
; Uwe Claus T{äuber
; | | Date: |
10 Dec 1996 | | Journal: | Phys. Rev. Lett. 78, 4845 (1997) | | Subject: | Superconductivity | cond-mat.supr-con | | Affiliation: | University of California, Santa Cruz) and Uwe Claus T{äuber (University of Oxford, U.K. | | Abstract: | We study the properties of the Bose glass phase of localized flux lines in irradiated superconductors near the matching field $B_{Phi}$. Repulsive vortex interactions destroy the Mott insulator phase predicted to occur at $B=B_Phi$. For ratios of the penetration depth to average defect distance $lambda / d leq 1$ remnants of the Mott insulator singularities remain visible in the magnetization, the bulk modulus, and the magnetization relaxation, as B is varied near $B_{Phi}$. For $lambda geq d$, the ensuing weakly pinned Bose glass is characterized by a soft Coulomb gap in the distribution of pinning energies. | | Source: | arXiv, cond-mat/9612093 | | Services: | Forum | Review | PDF | Favorites | |
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