Session R39: Superconductivity-Sodium Cobaltate

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Sponsoring Units: DCMP
Chair: Igor Mazin, Naval Research Laboratory
Baltimore Convention Center - 342


Wednesday, March 15, 2006
2:30PM - 2:42PM

R39.00001: Charge-fluctuation excitations in Na$_{1/3}$CoO$_{2}$$\cdot$yH$_{2}$O(*)
O.D. Restrepo(1) , A.G. Eguiluz(1) , K.-W. Lee , J. Kunes , W.E. Pickett(3)

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Wednesday, March 15, 2006
2:42PM - 2:54PM

R39.00002: Charge and Spin Ordering in Insulator Na$_{0.5}$CoO$_2$: Effects of Correlation and Symmetry
Kwan-Woo Lee , Warren Pickett

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Wednesday, March 15, 2006
2:54PM - 3:06PM

R39.00003: Ab Initio Study on Na Ordering and its Relation to the Electronic/Magnetic Properties of P2-NaCoO2 Thermoelectrics
Ying Shirley Meng , Anton Van der Ven , Maria Chan , Gerbrand Ceder

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Wednesday, March 15, 2006
3:06PM - 3:18PM

R39.00004: Electron Correlation and Fermi Surface Topology of Na$_x$CoO$_2$
Sen Zhou , Meng Gao , Hong Ding , Patrick Lee , Ziqiang Wang

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Wednesday, March 15, 2006
3:18PM - 3:30PM

R39.00005: Systematic doping evolution of quasiparticle mode and Fermi surface topology in NaxCoO$_2$
Dong Qian , A.V. Fedorov , Zahid Hussain , R.J. Cava , N.L. Wang , M.Z. Hasan

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Wednesday, March 15, 2006
3:30PM - 3:42PM

R39.00006: Correlation Effects and Magnetism in Na$_x$CoO$_2$
Meng Gao , Sen Zhou , Hong Ding , Ziqiang Wang

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Wednesday, March 15, 2006
3:42PM - 3:54PM

R39.00007: Thermal Expansion Measurements of the Antiferromagnetic Transition in Na$_x$CoO$_2$ Single Crystals (x=0.75 and 0.80)
C. A. M. dos Santos , J. J. Neumeier , R. K. Bollinger , Y.-K. Yu , R. Jin , D. Mandrus

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Wednesday, March 15, 2006
3:54PM - 4:06PM

R39.00008: Specific-heat study for the coupling between two superconducting order parameters in Na$_{x}$Mn$_{z}$Co$_{1-z}$O$_{2}$·yH$_{2}$O.
C.P. Sun , J. -Y. Lin , C.L. Huang , C.-J. Liu , J.S. Wang , H.D. Yang

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Wednesday, March 15, 2006
4:06PM - 4:18PM

R39.00009: Transport Properties and X-ray Absorption Spectroscopy in Layered Cobaltate Na$_{x}$CoO$_{2}$ thin films
W. J. Chang , J. Y. Juang , J.-Y. Lin , C. M. Lee , C.-M. Huang , J. M. Chen , C.-H. Hsu

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Wednesday, March 15, 2006
4:18PM - 4:30PM

R39.00010: Variational Monte Carlo study of pairing symmetries of Na0.3CoO2.1.3H2O
Rui Fan , Yong-Qiang Wang , Hai-Qing Lin

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Wednesday, March 15, 2006
4:30PM - 4:42PM

R39.00011: Band Structures, Fermi Surface Topology and Superconductivity in Na$_x$CoO$_2 \cdot y$H$_2$O: Effects of the trigonal CoO$_6$ distortion
Masahito Mochizuki , Masao Ogata

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Wednesday, March 15, 2006
4:42PM - 4:54PM

R39.00012: Photoemission study on core levels of NaxCoO2
Jihua Ma , Hongbo Yang , Zhihui Pan , A.V. Fedorov , R. Jin , B.C. Sales , D. Mandrus , Hong Ding

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Wednesday, March 15, 2006
4:54PM - 5:06PM

R39.00013: Determination of $t_{2g}$ Complex in Na$_{x}$CoO$_{2}$ by Angle-Resolved Photoemission Spectroscopy
Hongbo Yang , Jihua Ma , Zhihui Pan , Alexei Fedorov , Jongyin Jin , Brian Sales , David Mandrus , Ziqiang Wang , Hong Ding

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Wednesday, March 15, 2006
5:06PM - 5:18PM

R39.00014: Possible coexistence of $s$-wave and unconventional pairing in hydrated Na$_{x}$CoO$_{2}$: a new insight from impurity effects
Jiunn-Yuan Lin , Y.-J. Chen , C.-J. Liu , J.-S. Wang , C. P. Sun , H. D. Yang , S. W. Huang , J. M. Chen , J. M. Lee , J. F. Lee , D. G. Liu

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Wednesday, March 15, 2006
5:18PM - 5:30PM

R39.00015: Effect of heavy water intercalation in sodium cobaltate .
Cinzia Metallo , Takeshi Egami , Thomas Proffen , David Mandrus , Brian Sales , Rongying Jin

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