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Topological Insulators [PDF]

, 2013
The recent discovery of a new class of materials, the so-called topological insulators [1–5]. has generated a great interest in the fields of condensed matter physics and materials science [1]. In principle, according to their band structure, compounds can be divided into metals and insulators.
Müchler, L., Yan, B., Casper, F., Chadov, S., Felser, C.   +4 more
  +5 more sources

Tiling Photonic Topological Insulator for Laser Applications

Applied Sciences, 2023
A photonic topological insulator is a structure that isolates radiation in the bulk rather than at the edge (surface). Paradoxically, applications of such an insulator focus on its conducting edge states, which are robust against structural defects.
Petr N. Kim, Dmitry P. Fedchenko, Natalya V. Rudakova, Ivan V. Timofeev   +3 more
doaj   +1 more source

Phase Change Material‐Driven Tunable Metasurface for Adaptive Terahertz Sensing and Communication in 6G Perceptive Networks

Advanced Functional Materials, EarlyView.
This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To, Jiachen Du, Cyril Decroze, Laure Huitema, Aurelian Crunteanu, Hang Wong   +5 more
wiley   +1 more source

Antiferromagnetic topological insulators

, 2010
We consider antiferromagnets breaking both time-reversal (Theta) and a primitive lattice translational symmetry (T) of a crystal but preserving the combination S = Theta T.
Essin, Andrew M., Mong, Roger S. K., Moore, Joel E.   +2 more
core   +1 more source

Photonic Topological Insulators

Nonlinear Optics, 2013
Photonic systems are naturally an excellent avenue to study fundamental concepts of waves' interactions, and many times lead to new discoveries. In this context, the recent breakthroughs on photonic topological insulators will be discussed, with an emphasis on fundamental aspects that are universal to many waves systems in nature.
openaire   +2 more sources

Ice Lithography: Recent Progress Opens a New Frontier of Opportunities

Advanced Functional Materials, EarlyView.
This review focuses on recent advancements in ice lithography, including breakthroughs in compatible precursors and substrates, processes and applications, hardware, and digital methods. Moreover, it offers a roadmap to uncover innovation opportunities for ice lithography in fields such as biological, nanoengineering and microsystems, biophysics and ...
Bingdong Chang, Gwendoline A. E. Anand, Rubaiyet Haque, Dylan A. Chiaro, Mona Sharma, Andrew R. Williams, Frank Niklaus, Daryl W. Yee, Gavin M. King, Anpan Han   +9 more
wiley   +1 more source

Mott physics and band topology in materials with strong spin-orbit interaction

, 2009
Recent theory and experiment have revealed that strong spin-orbit coupling can have dramatic qualitative effects on the band structure of weakly interacting solids. Indeed, it leads to a distinct phase of matter, the topological band insulator.
A Abragam, A Essin, A Shitade, B Kyung, BA Bernevig, BI Halperin, BI Halperin, BJ Kim, C Kane, D Hsieh, D Podolsky, Dmytro Pesin, F Wilczek, G Chen, G Chen, H Fukazawa, H Morita, J Slater, JE Moore, K Matsuhira, L Fu, L Fu, LB Ioffe, Leon Balents, M Elhajal, M Konig, M Tovar, MJ Lawler, MW Young, O Motrunich, P Sahebsara, S Florens, S Nakatsuji, S Raghu, S Yamashita, T Mizusaki, T Senthil, T Yoshikawa, X Qi, X Qi, Y Okamoto, Y Zhou   +41 more
core   +1 more source

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

Advanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey, Arjen van den Berg, Sandra Ruiz Gomez, Claire Donnelly, Dirk Grundler, Sam Ladak   +5 more
wiley   +1 more source

Energy gap of topological surface states in proximity to a magnetic insulator

Communications Physics, 2023
Topological surface-states can acquire an energy gap when time-reversal symmetry is broken by interfacing with a magnetic insulator. This gap has yet to be measured. Such topological-magnetic insulator heterostructures can host a quantized anomalous Hall
Jiashu Wang, Tianyi Wang, Mykhaylo Ozerov, Zhan Zhang, Joaquin Bermejo-Ortiz, Seul-Ki Bac, Hoai Trinh, Maksym Zhukovskyi, Tatyana Orlova, Haile Ambaye, Jong Keum, Louis-Anne de Vaulchier, Yves Guldner, Dmitry Smirnov, Valeria Lauter, Xinyu Liu, Badih A. Assaf   +16 more
doaj   +1 more source

Superconductivity and non-metallicity induced by doping the topological insulators Bi2Se3 and Bi2Te3

, 2010
We show that by Ca-doping the Bi2Se3 topological insulator, the Fermi level can be fine tuned to fall inside the band gap and therefore suppress the bulk conductivity. Non-metallic Bi2Se3 crystals are obtained.
Alpichshev, Bernevig, Bernevig, Caywood, Checkelsky, Chen, D. Qu, Fleurial, Fu, Fu, Fu, Hor, Hor, Hsieh, Hsieh, Hulliger, Hulliger, J.G. Checkelsky, Miller, Mishray, Moore, Morosan, Morosan, N.P. Ong, Qu, R.J. Cava, Scherrer, Vaško, Xia, Y.S. Hor, Zhang, Zhang   +31 more
core   +1 more source