Investigation of a CDDW Hamiltonian to Explore Possibility of Magneto-Quantum Oscillations in Electronic Specific Heat of Hole-Doped Cuprates
We investigate a chiral d-density wave (CDDW) mean field model Hamiltonian in the momentum space suitable for the hole-doped cuprates, such as YBCO, in the pseudogap phase to obtain the Fermi surface (FS) topologies, including the anisotropy parameter(́𝜀) and the elastic scattering by disorder pote...
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Wiley
2010-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2010/928419 |
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| author | Partha Goswami Manju Rani |
| author_facet | Partha Goswami Manju Rani |
| author_sort | Partha Goswami |
| collection | DOAJ |
| description | We investigate a chiral d-density wave (CDDW) mean field model Hamiltonian in the momentum space suitable for the hole-doped cuprates, such as YBCO, in the pseudogap phase to obtain the Fermi surface (FS) topologies, including the anisotropy parameter(́𝜀) and the elastic scattering by disorder potential (|𝑣0|). For ́𝜀=0, with the chemical potential 𝜇=−0.27 eV for 10% doping level and |𝑣0|≥|𝑡| (where |𝑡|=0.25 eV is the first neighbor hopping), at zero/non-zero magnetic field (𝐵), the FS on the first Brillouin zone is found to correspond to electron pockets around antinodal regions and barely visible patches around nodal regions. For ́𝜀≠0, we find Pomeranchuk distortion of FS. We next relate our findings regarding FS to the magneto-quantum oscillations in the electronic specific heat. Since the nodal quasiparticle energy values for 𝐵=0 are found to be greater than 𝜇 for |𝑣0|≥|𝑡|, the origin of the oscillations for nonzero 𝐵 corresponds to the Fermi pockets around antinodal regions. The oscillations are shown to take place in the weak disorder regime (|𝑣0|=0.25eV) only. |
| format | Article |
| id | doaj-art-250121d9da1a40078c9f9510321e47da |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-250121d9da1a40078c9f9510321e47da2025-02-03T06:42:17ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242010-01-01201010.1155/2010/928419928419Investigation of a CDDW Hamiltonian to Explore Possibility of Magneto-Quantum Oscillations in Electronic Specific Heat of Hole-Doped CupratesPartha Goswami0Manju Rani1D.B.College, University of Delhi, Kalkaji, New Delhi 110019, IndiaD.B.College, University of Delhi, Kalkaji, New Delhi 110019, IndiaWe investigate a chiral d-density wave (CDDW) mean field model Hamiltonian in the momentum space suitable for the hole-doped cuprates, such as YBCO, in the pseudogap phase to obtain the Fermi surface (FS) topologies, including the anisotropy parameter(́𝜀) and the elastic scattering by disorder potential (|𝑣0|). For ́𝜀=0, with the chemical potential 𝜇=−0.27 eV for 10% doping level and |𝑣0|≥|𝑡| (where |𝑡|=0.25 eV is the first neighbor hopping), at zero/non-zero magnetic field (𝐵), the FS on the first Brillouin zone is found to correspond to electron pockets around antinodal regions and barely visible patches around nodal regions. For ́𝜀≠0, we find Pomeranchuk distortion of FS. We next relate our findings regarding FS to the magneto-quantum oscillations in the electronic specific heat. Since the nodal quasiparticle energy values for 𝐵=0 are found to be greater than 𝜇 for |𝑣0|≥|𝑡|, the origin of the oscillations for nonzero 𝐵 corresponds to the Fermi pockets around antinodal regions. The oscillations are shown to take place in the weak disorder regime (|𝑣0|=0.25eV) only.http://dx.doi.org/10.1155/2010/928419 |
| spellingShingle | Partha Goswami Manju Rani Investigation of a CDDW Hamiltonian to Explore Possibility of Magneto-Quantum Oscillations in Electronic Specific Heat of Hole-Doped Cuprates Advances in Condensed Matter Physics |
| title | Investigation of a CDDW Hamiltonian to Explore Possibility of Magneto-Quantum Oscillations in Electronic Specific Heat of Hole-Doped Cuprates |
| title_full | Investigation of a CDDW Hamiltonian to Explore Possibility of Magneto-Quantum Oscillations in Electronic Specific Heat of Hole-Doped Cuprates |
| title_fullStr | Investigation of a CDDW Hamiltonian to Explore Possibility of Magneto-Quantum Oscillations in Electronic Specific Heat of Hole-Doped Cuprates |
| title_full_unstemmed | Investigation of a CDDW Hamiltonian to Explore Possibility of Magneto-Quantum Oscillations in Electronic Specific Heat of Hole-Doped Cuprates |
| title_short | Investigation of a CDDW Hamiltonian to Explore Possibility of Magneto-Quantum Oscillations in Electronic Specific Heat of Hole-Doped Cuprates |
| title_sort | investigation of a cddw hamiltonian to explore possibility of magneto quantum oscillations in electronic specific heat of hole doped cuprates |
| url | http://dx.doi.org/10.1155/2010/928419 |
| work_keys_str_mv | AT parthagoswami investigationofacddwhamiltoniantoexplorepossibilityofmagnetoquantumoscillationsinelectronicspecificheatofholedopedcuprates AT manjurani investigationofacddwhamiltoniantoexplorepossibilityofmagnetoquantumoscillationsinelectronicspecificheatofholedopedcuprates |