2004/06/08 by J. R. Schrieffer, Schrieffer, J. R.
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum many-body systems #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.cond-mat/0406200
arxiv created 2004/06/08 · openalex publication_date 2004/06/08 · arxiv updated 2009/12/01 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
We develop a new theory of pairing and magnetic spin fluctuation effect near\nthe quantum critical point. Several novel properties are predicted: 1) based on\na spin fermion model, we derive two new interactions, a) a spin deformational\npotential Hsdp proportional to the bandwidth W (as opposed to the\nconsiderably smaller exchange coupling J of the nearly antiferromagnetic\nFermi liquid theory) and b) a diamagnetic potential Hdia, quadratic in a\ngauge potential \A. A dramatic increase of TC is predicted for 0.01\nW\≤ J\≤ 10 W. This should have immense technological impact in electric\nenergy production, storage and transmission, as well as for medical\nelectronics, microwave electronics, computer memory and information storage,\nseparations technology and maglev, amongst others. The striking prediction to\nbe confirmed by experiment is that the pairing order parameter\n\Δ(\k) is predicted to be p-wave, i.e., l=1, S=1, as compared to\nl=2 and S=1 for conventional HTS materials. In addition a novel collective\nmodel is predicted whose frequency, \ωL is in the optical range and is\ndetermined by Hsdp.\n