1 / 1

Search for Competing Order-parameters in Cuprates using FT-STS

Superconductors: other phases?. Theory: many proposed phases. Theory: many proposed phases. High Tc cuprates. Conventional, Low Tc. 0.5 nS. D-density wave (DDW). 2 pA. Chakravarty, Laughlin, et al., PRB 63 , 094503. STRIPES. Varma phase. 0 1000Å.

arwen
Download Presentation

Search for Competing Order-parameters in Cuprates using FT-STS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Superconductors: other phases? Theory: many proposed phases... Theory: many proposed phases... High Tc cuprates Conventional, Low Tc 0.5 nS D-density wave (DDW) 2 pA Chakravarty, Laughlin, et al., PRB63, 094503 STRIPES Varma phase 0 1000Å 0 500Å S. White, Zaanen, Kivelson, Emery, etc. ~(1/4,0) Coexisting SDW/CDW Varma, PRB61, R3804 AF 560 Å Demler, Sachdev, Zhang, PRL 87, 067202 SC Exponential Decay of Core State 1 2 BSCCO H. Kammmerlingh-Onnes, Commun. Phys. Lab. 12, 120 (1911) Orenstein & Millis, Science 288, 5465 Staggered Flux Phase x y 0 nS y y y y x x x x 0 pA Kishine, Lee & Wen, PRL 86, 5365 So many proposed phases they won’t fit in this small space... Normalized dI/dV superconducting 1 dI/dV [nS] 0.1 Fermi liquid Fractionalized Nodal Liquid: Superconductivity without pairing? 560 Å 560 Å 560 Å 560 Å 0 15 30 45 60 75 QED3 0 1200 Å -200 -100 0 100 200 Distance from core [Å] SO(5) theory Franz, et al., condmat/0203219 V sample [mV] Senthil & Fisher, PRB 62, 7864 (2001) S.C. Zhang, Science275, 1089 Search for Competing Order-parameters in Cuprates using FT-STS J. E. Hoffman, K. McElroy, E.W. Hudson, H Eisaki, S. Uchida & J. C. Seamus Davis dI/dV spectra on Bi2Sr2CaCu2O8+xsurface in B=7 Tesla Background: Common Phenomenology of Vortex Cores in HTSC 7 meV LDOS • I. Maggio-Aprile et al., Phys. Rev. Lett. 75, 2754 (1995) 30 nm Pan,PRL85, 1536 (2000) • S. H. Pan et al.,Phys. Rev. Lett. 85, 1536 (2000) Topographies Reproducibility of vortex data E = 12 meV B = 0 T B = 5 T B = 0 T B = 5 T 0.5% Ni-doped BSCCO 0.6% Zn-doped BSCCO 1.1 Å x y 0 Å Raw data: 7 meV LDOS 560 Å x 560 Å Raw data: 8 meV LDOS 565 Å x 565 Å Vortex-induced LDOS (5 Tesla) Fourier Transform of Vortex LDOS map Data: Schematic: supermodulation vortex induced LDOS Bi and Cu atoms Science 266, 455 (2002) Science 266, 455 (2002) Coexisting SDW/CDW ? Research Support:

More Related