Unconventional transformation of spin Dirac phase across a topological quantum phase transition
نویسندگان
چکیده
منابع مشابه
Unconventional transformation of spin Dirac phase across a topological quantum phase transition
The topology of a topological material can be encoded in its surface states. These surface states can only be removed by a bulk topological quantum phase transition into a trivial phase. Here we use photoemission spectroscopy to image the formation of protected surface states in a topological insulator as we chemically tune the system through a topological transition. Surprisingly, we discover ...
متن کاملTopological quantum phase transition in the extended Kitaev spin model
Xiao-Feng Shi,1,2,3 Yue Yu,4 J. Q. You,1,2,3 and Franco Nori2,3,5 1Department of Physics and Surface Physics Laboratory (National Key Laboratory), Fudan University, Shanghai 200433, China 2Advanced Science Institute, The Institute of Physical and Chemical Research (RIKEN), Wako-shi 351-0198, Japan 3CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan 4Institute of Theo...
متن کاملDirac point movement and topological phase transition in patterned graphene.
The honeycomb lattice of graphene is characterized by linear dispersion and pseudospin chirality of fermions on the Dirac cones. If lattice anisotropy is introduced, the Dirac cones stay intact but move in reciprocal space. Dirac point movement can lead to a topological transition from semimetal to semiconductor when two inequivalent Dirac points merge, an idea that has attracted significant re...
متن کاملMott physics and topological phase transition in correlated dirac fermions.
We investigate the interplay between the strong correlation and the spin-orbit coupling in the Kane-Mele-Hubbard model and obtain the qualitative phase diagram via the variational cluster approach. We identify, through an increase of the Hubbard U, the transition from the topological band insulator to either the spin liquid phase or the easy-plane antiferromagnetic insulating phase, depending o...
متن کاملQuantum Wells Quantum Spin Hall Effect and Topological Phase Transition in HgTe
, 1757 (2006); 314 Science et al. B. Andrei Bernevig Quantum Wells Quantum Spin Hall Effect and Topological Phase Transition in HgTe This copy is for your personal, non-commercial use only. clicking here. colleagues, clients, or customers by , you can order high-quality copies for your If you wish to distribute this article to others here. following the guidelines can be obtained by Permission...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Communications
سال: 2015
ISSN: 2041-1723
DOI: 10.1038/ncomms7870