hrcak mascot   Srce   HID

Izvorni znanstveni članak
https://doi.org/10.5562/cca2324

Quantum Phase Diagram of One-Dimensional Spin and Hubbard Models with Transitions to Bond Order Wave Phases

Manoranjan Kumar ; S. N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake, Kolkata-700098, India
S. Ramasesha ; Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
Zoltán G. Soos ; Department of Chemistry, Princeton University, Princeton NJ 08544, USA

Puni tekst: engleski, pdf (2 MB) str. 407-417 preuzimanja: 1.079* citiraj
APA 6th Edition
Kumar, M., Ramasesha, S. i Soos, Z.G. (2013). Quantum Phase Diagram of One-Dimensional Spin and Hubbard Models with Transitions to Bond Order Wave Phases. Croatica Chemica Acta, 86 (4), 407-417. https://doi.org/10.5562/cca2324
MLA 8th Edition
Kumar, Manoranjan, et al. "Quantum Phase Diagram of One-Dimensional Spin and Hubbard Models with Transitions to Bond Order Wave Phases." Croatica Chemica Acta, vol. 86, br. 4, 2013, str. 407-417. https://doi.org/10.5562/cca2324. Citirano 07.03.2021.
Chicago 17th Edition
Kumar, Manoranjan, S. Ramasesha i Zoltán G. Soos. "Quantum Phase Diagram of One-Dimensional Spin and Hubbard Models with Transitions to Bond Order Wave Phases." Croatica Chemica Acta 86, br. 4 (2013): 407-417. https://doi.org/10.5562/cca2324
Harvard
Kumar, M., Ramasesha, S., i Soos, Z.G. (2013). 'Quantum Phase Diagram of One-Dimensional Spin and Hubbard Models with Transitions to Bond Order Wave Phases', Croatica Chemica Acta, 86(4), str. 407-417. https://doi.org/10.5562/cca2324
Vancouver
Kumar M, Ramasesha S, Soos ZG. Quantum Phase Diagram of One-Dimensional Spin and Hubbard Models with Transitions to Bond Order Wave Phases. Croatica Chemica Acta [Internet]. 2013 [pristupljeno 07.03.2021.];86(4):407-417. https://doi.org/10.5562/cca2324
IEEE
M. Kumar, S. Ramasesha i Z.G. Soos, "Quantum Phase Diagram of One-Dimensional Spin and Hubbard Models with Transitions to Bond Order Wave Phases", Croatica Chemica Acta, vol.86, br. 4, str. 407-417, 2013. [Online]. https://doi.org/10.5562/cca2324

Sažetak
Similar quantum phase diagrams and transitions are found for three classes of one-dimensional
models with equally spaced sites, singlet ground states (GS), inversion symmetry at sites and a bond order
wave (BOW) phase in some sectors. The models are frustrated spin−1/2 chains with variable range
exchange, half-filled Hubbard models with spin-independent interactions and modified Hubbard models
with site energies for describing organic charge transfer salts. In some range of parameters, the models
have a first order quantum transition at which the GS expectation value of the sublattice spin SA
2 of odd
or even-numbered sites is discontinuous. There is an intermediate BOW phase for other model parameters
that lead to two continuous quantum transitions with continuous SA
2. Exact diagonalization of finite
systems and symmetry arguments provide a unified picture of familiar 1D models that have appeared
separately in widely different contexts. (doi: 10.5562/cca2324)

Ključne riječi
bond order wave phases; quantum phase transitions; frustrated spin chains; extended Hubbard models; neutral-ionic transition models

Hrčak ID: 112763

URI
https://hrcak.srce.hr/112763

Posjeta: 1.323 *