Raman response in a superconductor with extended s-wave symmetry: application to Fe-pnictides TeX Export

@article{citeulike:3889947, abstract = {We argue that Raman study of Fe-pnictides is a way to unambiguously distinguish between various superconducting gaps proposed for these materials. We show that \$A\_{1g}\$ Raman intensity has a true resonance peak below \$2\Delta\$ for extended s-wave superconducting gap, \$\Delta(\mathbf{k}) = \Delta (\cos k\_x + \cos k\_y)/2\$ in the folded Brillouin zone. No such peak emerges for a pure s-wave gap, a d-wave gap, and another extended s-wave gap with \$\Delta(\mathbf{k}) = \Delta \cos{\frac{k\_x}{2}} \cos{\frac{k\_y}{2}}\$ proposed by several groups.}, archivePrefix = {arXiv}, author = {Chubukov, Andrey V. and Eremin, Ilya and Korshunov, Maxim M.}, citeulike-article-id = {3889947}, citeulike-linkout-0 = {http://arxiv.org/abs/0901.2102}, citeulike-linkout-1 = {http://arxiv.org/pdf/0901.2102}, day = {14}, eprint = {0901.2102}, keywords = {iron, optics}, month = {Jan}, posted-at = {2009-01-16 00:12:25}, priority = {2}, title = {Raman response in a superconductor with extended s-wave symmetry: application to Fe-pnictides}, url = {http://arxiv.org/abs/0901.2102}, year = {2009} }

TY - JOUR ID - citeulike:3889947 L3 - citeulike-article-id:3889947 N2 - We argue that Raman study of Fe-pnictides is a way to unambiguously distinguish between various superconducting gaps proposed for these materials. We show that $A_{1g}$ Raman intensity has a true resonance peak below $2\Delta$ for extended s-wave superconducting gap, $\Delta(\mathbf{k}) = \Delta (\cos k_x + \cos k_y)/2$ in the folded Brillouin zone. No such peak emerges for a pure s-wave gap, a d-wave gap, and another extended s-wave gap with $\Delta(\mathbf{k}) = \Delta \cos{\frac{k_x}{2}} \cos{\frac{k_y}{2}}$ proposed by several groups. TI - Raman response in a superconductor with extended s-wave symmetry: application to Fe-pnictides KW - iron KW - optics AU - Chubukov, Andrey AU - Eremin, Ilya AU - Korshunov, Maxim PY - 2009/Jan/14/ UR - http://arxiv.org/abs/0901.2102 ER -