Hubbard pair cluster in the external fields. Studies of the chemical potential
| Autor: | Tadeusz Balcerzak, Karol Szałowski |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Statistics and Probability
Physics Statistical Mechanics (cond-mat.stat-mech) Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics Hubbard model Electron concentration FOS: Physical sciences Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas Magnetic field Condensed Matter - Strongly Correlated Electrons Grand canonical ensemble symbols.namesake 0103 physical sciences symbols 010306 general physics Hamiltonian (quantum mechanics) Ground state Condensed Matter - Statistical Mechanics |
| Zdroj: | Physica A: Statistical Mechanics and its Applications. 468:252-266 |
| ISSN: | 0378-4371 |
| DOI: | 10.1016/j.physa.2016.11.004 |
| Popis: | The chemical potential of the two-site Hubbard cluster (pair) embedded in the external electric and magnetic fields is studied by exact diagonalization of the Hamiltonian. The formalism of the grand canonical ensemble is adopted. The influence of temperature, Hubbard on-site Coulombic energy U and electron concentration on the chemical potential is investigated and illustrated in figures. In particular, a discontinuous behaviour of the chemical potential (or electron concentration) in the ground state is discussed. |
| Databáze: | OpenAIRE |
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