A resolution to doping asymmetry puzzle in high Tc cuprates
| dc.creator | Baskaran, G. | |
| dc.date | 2005-05-20 | |
| dc.date | 2005-05-23 | |
| dc.date.accessioned | 2026-07-07T03:05:17Z | |
| dc.date.available | 2026-07-07T03:05:17Z | |
| dc.description | We present a microscopic model for `electron doped' $Nd_{2-x}Ce_xCuO_4$ family and offer a resolution to a long standing doping asymmetry puzzle. Here, i) Ce atoms do not dope free electrons, instead a Ce atom effectively quenches a $Cu^{2+}$ spin moment at an adjacent site, at an energy scale > superexchange J of $CuO_2$ plane and `site dilutes' the Mott insulator. ii) Effective chemical pressure, caused by increased Ce substitution, induces a {\em first order Mott insulator to superconductor transition} in the $CuO_2$ plane. We predict, i) {\em equal number of +e and -e carriers} in metallic state and ii) a line of first order transition ending at a critical point in normal state. Phenomenology gets organized. | |
| dc.description | 4 pages LaTex file, 4 figures eps files, typos corrected | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0505509 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0505509 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/26392 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Superconductivity | |
| dc.title | A resolution to doping asymmetry puzzle in high Tc cuprates | |
| dc.type | text |