Zobrazeno 1 - 10
of 730
pro vyhledávání: '"A. Varykhalov"'
Autor:
M. Krivenkov, D. Marchenko, E. Golias, M. Sajedi, A. S. Frolov, J. Sánchez-Barriga, A. Fedorov, L. V. Yashina, O. Rader, A. Varykhalov
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p 023120 (2023)
Two-dimensional (2D) Dirac materials are electronically and structurally very sensitive to proximity effects. We demonstrate, however, the opposite effect: that the deposition of a monolayer 2D material could exercise a substantial influence on the s
Externí odkaz:
https://doaj.org/article/5b24fac91e0e4761be8c1589bc34f69b
Autor:
J. R. Chamorro, A. Topp, Y. Fang, M. J. Winiarski, C. R. Ast, M. Krivenkov, A. Varykhalov, B. J. Ramshaw, L. M. Schoop, T. M. McQueen
Publikováno v:
APL Materials, Vol 7, Iss 12, Pp 121108-121108-7 (2019)
Layered heavy-metal square-lattice compounds have recently emerged as potential Dirac fermion materials due to bonding within those sublattices. We report quantum transport and spectroscopic data on the layered Sb square-lattice material LaCuSb2. Lin
Externí odkaz:
https://doaj.org/article/e11439be64c34141bb0cf0e6ed5c85b9
Autor:
P. Hlawenka, K. Siemensmeyer, E. Weschke, A. Varykhalov, J. Sánchez-Barriga, N. Y. Shitsevalova, A. V. Dukhnenko, V. B. Filipov, S. Gabáni, K. Flachbart, O. Rader, E. D. L. Rienks
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Samarium hexahoride is argued to be a topological Kondo insulator, but this claim remains under debate. Here, Hlawenka et al. provide a topologically trivial explanation for the conducting states at the (100) surface of samarium hexaboride; an explan
Externí odkaz:
https://doaj.org/article/f28f822dd1b94bb882e54e1328f0a9f8
Autor:
Matsuda, Takuya, Higo, Tomoya, Kuroda, Kenta, Koretsune, Takashi, Kanda, Natsuki, Hirai, Yoshua, Peng, Hanyi, Matsuo, Takumi, Bareille, Cedric, Varykhalov, Andrey, Yoshikawa, Naotaka, Yoshinobu, Jun, Kondo, Takeshi, Shimano, Ryo, Nakatsuji, Satoru, Matsunaga, Ryusuke
Kagome-lattice materials offer novel playgrounds of exploring topologically nontrivial states of electrons under influence of many-body interactions. A noncollinear kagome antiferromagnet Mn$_3$Sn has attracted particular interest for application in
Externí odkaz:
http://arxiv.org/abs/2311.12339
Autor:
J. Sánchez-Barriga, A. Varykhalov, G. Springholz, H. Steiner, R. Kirchschlager, G. Bauer, O. Caha, E. Schierle, E. Weschke, A. A. Ünal, S. Valencia, M. Dunst, J. Braun, H. Ebert, J. Minár, E. Golias, L. V. Yashina, A. Ney, V. Holý, O. Rader
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-10 (2016)
Doping a topological insulator with magnetic impurities is expected to induce ferromagnetism and open a band gap in its surface states. Here, the authors study Mn-doped Bi2Se3, finding a mechanism for band gap opening in topologically-protected surfa
Externí odkaz:
https://doaj.org/article/bab09ea8531545da888263a8c825ac3d
Autor:
A. Varykhalov, F. Freyse, I. Aguilera, M. Battiato, M. Krivenkov, D. Marchenko, G. Bihlmayer, S. Blügel, O. Rader, J. Sánchez-Barriga
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 013343 (2020)
We show that, although the equilibrium band dispersion of the Shockley-type surface state of two-dimensional Au(111) quantum films grown on W(110) does not deviate from the expected free-electron-like behavior, its nonequilibrium energy-momentum disp
Externí odkaz:
https://doaj.org/article/2326657785b647278a95fd1afa74975c
Autor:
Geldiyev, B., Ünzelmann, M., Eck, P., Kißlinger, T., Schusser, J., Figgemeier, T., Kagerer, P., Tezak, N., Krivenkov, M., Varykhalov, A., Fedorov, A., Nicolaï, L., Minár, J., Miyamoto, K., Okuda, T., Shimada, K., Di Sante, D., Sangiovanni, G., Hammer, L., Schneider, M. A., Bentmann, H., Reinert, F.
We study the interplay of lattice, spin and orbital degrees of freedom in a two-dimensional model system: a flat square lattice of Te atoms on a Au(100) surface. The atomic structure of the Te monolayer is determined by scanning tunneling microscopy
Externí odkaz:
http://arxiv.org/abs/2308.02372
Autor:
Krivenkov, Maxim, Sajedi, Maryam, Marchenko, Dmitry, Golias, Evangelos, Muntwiler, Matthias, Rader, Oliver, Varykhalov, Andrei
Phosphorene, a 2D allotrope of phosphorus, is technologically very appealing because of its semiconducting properties and narrow band gap. Further reduction of the phosphorene dimensionality may spawn exotic properties of its electronic structure, in
Externí odkaz:
http://arxiv.org/abs/2304.13456
Autor:
Singha, Ratnadwip, Dalgaard, Kirstine J., Marchenko, Dmitry, Krivenkov, Maxim, Rienks, Emile D. L., Jovanovic, Milena, Teicher, Samuel M. L., Hu, Jiayi, Salters, Tyger H., Lin, Jingjing, Varykhalov, Andrei, Ong, N. Phuan, Schoop, Leslie M.
Publikováno v:
Science Advances 9, eadh0145 (2023)
Colossal magnetoresistance (MR) is a well-known phenomenon, notably observed in hole-doped ferromagnetic manganites. It remains a major research topic due to its potential in technological applications. Though topological semimetals also show large M
Externí odkaz:
http://arxiv.org/abs/2208.05466
Autor:
E. Frantzeskakis, S. V. Ramankutty, N. de Jong, Y. K. Huang, Y. Pan, A. Tytarenko, M. Radovic, N. C. Plumb, M. Shi, A. Varykhalov, A. de Visser, E. van Heumen, M. S. Golden
Publikováno v:
Physical Review X, Vol 7, Iss 4, p 041041 (2017)
The main scientific activity in the field of topological insulators (TIs) consists of determining their electronic structure by means of magnetotransport and electron spectroscopy with a view to devices based on topological transport. There is, howev
Externí odkaz:
https://doaj.org/article/79ed8bbbd8c3465bae5142c29a845d74