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SUMMARY:Tuning magnetism and superconductivity in atomically engineered Sr
 TiO3–based heterostructures - Christopher Bell (Stanford Institute for M
 aterials and Energy Sciences\, California)
DTSTART:20130531T130000Z
DTEND:20130531T143000Z
UID:TALK45625@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:Bulk SrTiO3 is on the border of ferroelectricity at low temper
 atures\, and can be doped to create an extremely low density superconducto
 r with high electron mobility. These unique properties have motivated the 
 recent interest in low dimensional SrTiO3 heterostructures. The 2D superco
 nductivity at the asymmetrically confined LaAlO3/SrTiO3 interface [1]\, an
 d in particular its control with an electrostatic field effect gate [2\, 3
 ]\, is a paradigmatic example where we can explore novel low dimensional p
 hysics. \n\nMost intriguingly\, real space imaging by scanning SQUID micro
 scopy [4]\, as well as spectroscopic studies [5]\, reveal emergent magneti
 sm simultaneously with superconductivity. I will discuss the possible mech
 anisms at play that give rise to the fascinating physics in this system. \
 n\n[1] A. Ohtomo and H. Y. Hwang\, Nature 427\, 423 (2004).\n[2] A. D. Cav
 iglia et al.\, Nature 456\, 624 (2008).\n[3] C. Bell et al.\, Phys. Rev. L
 ett. 103\, 226802 (2009).\n[4] J. Bert et al.\, Nature Phys. 7\, 767 (2011
 ).\n[5] J.-S. Lee et al.\, Nature Mater. (accepted).\n
LOCATION:Rutherford building\, Seminar Room B
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