Impurity and interface bound states in dx2–y2 + idxy and px + ipy superconductors
Motivated by recent discoveries of novel superconductors such as NaxCoO2·yH2O and Sr2RuO4, we analyze features of quasiparticle scattering due to impurities and interfaces for possible gapful dx2–y2 + idxy and px + ipy Cooper pairing. A bound state appears near a local impurity, and a band of bound...
| Published in: | Physical Review B |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
American Physical Society. The Journal's web site is located at http://prb.aps.org/
2004
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| Subjects: | |
| Online Access: | https://doi.org/10.1103/PhysRevB.69.092502 http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=69&issue=9&spage=092502:1&epage=4&date=2004&atitle=Impurity+and+interface+bound+states+in+dx2–y2+++idxy+and+px+++ipy+superconductors http://hdl.handle.net/10722/43411 |
| Summary: | Motivated by recent discoveries of novel superconductors such as NaxCoO2·yH2O and Sr2RuO4, we analyze features of quasiparticle scattering due to impurities and interfaces for possible gapful dx2–y2 + idxy and px + ipy Cooper pairing. A bound state appears near a local impurity, and a band of bound states form near an interface. We obtained analytically the bound-state energy, and calculated the space and energy dependent local density of states resolvable by high-resolution scanning tunnelling microscopy. For comparison we also sketch results of impurity and interface states if the pairing is nodal p or d wave. published_or_final_version |
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