Topological Insulators - GDR Meso

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Warping + (in plane) Zeeman P. Adroguer, D. Carpentier, J. Cayssol and E. Orignac, unpublished H 0 = ~v F ẑ ⇥ (~ ⇥ ~ k) +V (~r ) H W = 2 z k 3 + + k 3 k ± = k x ± ik y Zeeman field : H Z = gµ B ~ . ~ B ‣ in plane without warping : no effect on transport ‣ + Warping : modifies the scattering amplitude, and the transport k min kmax No Warping Fermi Surface Increasing B Zeeman Field + Warping Zeeman field = Constant Gauge field = Shift of momenta Transport unchanged Zeeman field ≠ Constant Gauge field Transport modified Modification of UCF, weak loc, etc mardi 3 janvier 12
Conclusion ‣ New playground for unusual transport ‣ 1 Dirac cone as opposed to graphene ‣ hexagonal warping term ‣ spin degree of freedom ? P. Adroguer, D. Carpentier, J. Cayssol and E. Orignac, unpublished Poster by P. Adroguer ‣ Experimental progress ‣ improve existing materials ? ‣ new systems : strained HgTe (Würzburg, Grenoble) Talk by C. Bouvier ‣ Algebraic correlation of disorder A. Fedorenko, D. Carpentier, and E. Orignac, unpublished Poster by A. Fedorenko ‣ ripples in graphene ‣ atomic steps (extended scatterers) for TI mardi 3 janvier 12
Page 1 and 2: Some Transport properties of Topolo
Page 3 and 4: Surface States of 3D Topological In
Page 5 and 6: Transport measurement on TI Bi2Se3
Page 7 and 8: Transport measurement on TI Bi2Se3
Page 9 and 10: Transport measurement on TI ‣ Bi2
Page 11 and 12: 2D Dirac Matter A B H = ~v F ( y .k
Page 13 and 14: Diffusion of 2D Dirac states • Tr
Page 15 and 16: Study of diffusion of 2D Dirac stat
Page 17 and 18: (Weak) Localization • Probability
Page 19 and 20: (Weak) Localization / Quantum trans
Page 21 and 22: Weak localization : Universality cl
Page 23 and 24: Weak localization : Universality cl
Page 25 and 26: Anderson Univ. classes and Topologi
Page 27 and 28: Anderson Univ. classes and Topologi
Page 29 and 30: Anisotropic Scattering of Dirac sta
Page 31: Anisotropic Scattering of Dirac sta

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