Superstripes

Superstripes is a generic name for a phase with spatial broken symmetry that favors the onset of superconducting or superfluid quantum order. This scenario emerged in the 1990s when non-homogeneous metallic heterostructures at the atomic limit with a broken spatial symmetry have been found to favor superconductivity.[1][2] Before a broken spatial symmetry was expected to compete and suppress the superconducting order. The driving mechanism for the amplification of the superconductivity critical temperature in superstripes matter has been proposed to be the shape resonance in the energy gap parameters ∆n that is a type of Fano resonance for coexisting condensates.[3][4]

The superstripes show multigap superconductivity near a 2.5 Lifshitz transition where the renormalization of chemical potential at the metal-to-superconductor transition is not negligeable and the self-consistent solution of the gaps equation is required. The superstripes lattice scenario is made of puddles of multigap superstripes matter forming a superconducting network where different gaps are not only different in different portions of the k-space but also in different portions of the real space with a complex scale free distribution of Josephson junctions.

  1. ^ Bianconi, A. (2000). "Superstripes". International Journal of Modern Physics B. 14 (29n31): 3289–3297. Bibcode:2000IJMPB..14.3289B. doi:10.1142/S0217979200003769.
  2. ^ Bianconi, A.; Di Castro, D.; Saini, N. L.; Bianconi, G. (2002). "Superstripes". Phase Transitions and Self-Organization in Electronic and Molecular Networks. Fundamental Materials Research. p. 375. arXiv:1107.4858. doi:10.1007/0-306-47113-2_24. ISBN 978-0-306-46568-0. S2CID 118809015.
  3. ^ Perali, A.; Bianconi, A.; Lanzara, A.; Saini, N. L. (1996). "The gap amplification at a shape resonance in a superlattice of quantum stripes: A mechanism for high TC". Solid State Communications. 100 (3): 181–186. arXiv:1107.3292. Bibcode:1996SSCom.100..181P. doi:10.1016/0038-1098(96)00373-0. S2CID 95957312.
  4. ^ Bianconi, A.; Valletta, A.; Perali, A.; Saini, N. L. (1998). "Superconductivity of a striped phase at the atomic limit". Physica C: Superconductivity. 296 (3–4): 269. Bibcode:1998PhyC..296..269B. doi:10.1016/S0921-4534(97)01825-X.