How the high Tc superconductors divided into two separate levels depending on their doping mechanism that is electron and hole doped? How this doping happens in superconductors?
Hello,
Defining holes and electrons in the superconducting state is not easy because of the magnetic field effect. You can carry Hall effect experiments before the material translate to the superconducting states or you can use hot probe to identify the type. Please notice the existence of cooper effect in the superconducting state (you can say hole like particles)
The electron-hole doping high-TC superconductors (e.g., YBa2Cu3O7-X) refers to the band which arises out of the CuO-planes near EF, in the rigid-band approximation.
Dear Subhasis,
Thanks for this good question.
Hall co-efficient is the direct way to determine whether the semiconductor is hole doped or electron doped.
If the semiconductor is intrinsic, the Hall co-efficient is zero.
Thanks
N Das
Dear Subhasis Shit - the doping in high-Tc cuprates is believed to arise from buffer layers adjacent to superconducting CuO2 layers; for most of families (LSCO, YBCO, etc.) the electrons get pulled out of the CuO2 layers, i.e. holes are introduced. Much smaller number of families (NCCO, PCCO, etc.) dope electrons into CuO2 planes. One can present a general doping phase diagram for cuprate superconductors embracing both dopings on the same axis, see e.g. https://arxiv.org/pdf/0906.2931.pdf .
Thanking you for giving reference to the review 'Progress and perspectives on the electron-doped cuprates'. Where is it published?
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