Infrared optical absorption spectra of CuO single crystals: Fermion-spinon band and dimensional crossover of the antiferromagnetic order Export

@article{citeulike:6068068, abstract = {We have obtained mid-infrared optical absorption spectra of the S=1/2 quasi-one-dimensional CuO using polarized transmission measurement and interpreted the spectra in terms of phonon-assisted magnetic excitations. When the electric field is parallel to the main antiferromagnetic direction a shaped peak is observed with the maximum at =0.23\ \ eV which is attributed to spinons along Cu-O chains. At low temperatures in the antiferromagnetic phase another peak appears at =0.16\ \ eV which is attributed to two-magnon absorption but the spinon peak remains. This behavior is interpreted as due to a dimensional crossover where the low-temperature three-dimensional magnetic phase keeps short-range characteristics of a one-dimensional magnet.}, author = {Jung, SeongHoon and Kim, Jooyeon and Choi, E. J. and Seiko, Y. and Kimura, T. and Lorenzana, J.}, citeulike-article-id = {6068068}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRBMDO000080000014140516000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRB/v80/e140516}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/PhysRevB.80.140516}, doi = {10.1103/PhysRevB.80.140516}, journal = {Physical Review B (Condensed Matter and Materials Physics)}, keywords = {2009, quantum\_magnetism, quantum\_world}, number = {14}, pages = {140516+}, posted-at = {2009-11-04 14:01:34}, priority = {2}, publisher = {APS}, title = {Infrared optical absorption spectra of CuO single crystals: Fermion-spinon band and dimensional crossover of the antiferromagnetic order}, url = {http://dx.doi.org/10.1103/PhysRevB.80.140516}, volume = {80}, year = {2009} }

TY - JOUR ID - citeulike:6068068 L3 - citeulike-article-id:6068068 N2 - We have obtained mid-infrared optical absorption spectra of the S=1/2 quasi-one-dimensional CuO using polarized transmission measurement and interpreted the spectra in terms of phonon-assisted magnetic excitations. When the electric field is parallel to the main antiferromagnetic direction a shaped peak is observed with the maximum at =0.23  eV which is attributed to spinons along Cu-O chains. At low temperatures in the antiferromagnetic phase another peak appears at =0.16  eV which is attributed to two-magnon absorption but the spinon peak remains. This behavior is interpreted as due to a dimensional crossover where the low-temperature three-dimensional magnetic phase keeps short-range characteristics of a one-dimensional magnet. IS - 14 JF - Physical Review B (Condensed Matter and Materials Physics) TI - Infrared optical absorption spectra of CuO single crystals: Fermion-spinon band and dimensional crossover of the antiferromagnetic order PB - APS VL - 80 SP - 140516 KW - 2009 KW - quantum_magnetism KW - quantum_world AU - Jung, SeongHoon AU - Kim, Jooyeon AU - Choi, EJ AU - Seiko, Y AU - Kimura, T AU - Lorenzana, J PY - 2009/// UR - http://dx.doi.org/10.1103/PhysRevB.80.140516 ER -