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  1. Há 8 horas · A. Haldanes honeycomb model To model a quantum Hall system without Landau levels, Haldane introduced a 2D honeycomb model for spinless lat-tice fermions with zero total flux [38]: Hˆ = −t 0 X i,j ˆc† i cˆ j+ h.c. −t 1 X i,j eiϕ ijcˆ† i ˆc j+ h.c. + M X i∈A ˆn i− X i∈B nˆ i!, (1) where ˆc i (ˆc † i

  2. bartamanpatrika.com › sectionBartaman Patrika

    Há 1 dia · Bartaman Patrika, India's leading bangla newspaper brings to you the latest news, breaking news, daily news, online news headlines in India & worldwide.