BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Topological crystals as a new paradigm - Tanda\, S (Hokkaido Unive
 rsity)
DTSTART:20120723T154500Z
DTEND:20120723T160500Z
UID:TALK39012@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:We report the discovery of Mobius\, Ring\, Figure-8\, and Hopf
 -link Crystals in NbSe3\, conventionally grown as ribbons and whiskers. We
  also reveal their formation mechanisms of which two crucial components ar
 e the spherical selenium (Se) droplet\, around which a NbSe3 bar wraps due
  to surface tension\, and the monoclinic (P2(1)/m) crystal symmetry inhere
 nt in NbSe3\, which induces a twist in the strip when bent. Our crystals p
 rovide a non-fictitious topological Mobius world governed by a non-trivial
  real-space topology. We class ed these topological crystals as an interme
 diary between condensed matter physics and mathematics. \n\nReferences [1]
 A Mobius strip of single crystals\, S. Tanda et al.\, Nature 417\, 397 (20
 02). [2]Formation and growth of NbSe3 topological crystals\, T. Tsuneta an
 d S.Tanda J. Cryst. Growth 267\, 223 (2004). [3]Topologically linked cryst
 als\, T. Matsuura et al.\, J. Cryst. Growth 297\, 157 (2006). [4]Topologic
 al eff ects of the superconducting vortex state in a TaSe3 ring crystal\, 
 G. Kumagai et al.\, Phys. Rev. B81\, 184506 (2010). [5]Chiral Charge-Densi
 ty waves\, J. Ishioka et al.\, Phys. Rev. Lett 105\, 176401 (2010). [6]Top
 ology-change surgery for crystals\, T. Matsuura et al.\, Phys. Rev. B83 17
 4113 (2011).\n\n
LOCATION:Seminar Room 1\, Newton Institute
END:VEVENT
END:VCALENDAR