Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Okan Köksal"'
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-10 (2023)
Abstract The dice lattice, containing a stack of three triangular lattices, has been proposed to exhibit nontrivial flat bands with nonzero Chern numbers, but unlike the honeycomb lattice it is much less studied. By employing density-functional theor
Externí odkaz:
https://doaj.org/article/18ee997684a44fff95ab4a9edb460bce
Publikováno v:
npj Quantum Materials, Vol 2, Iss 1, Pp 1-8 (2017)
Condensed Matter Physics: quantised Hall transport in two dimensional magnetic insulators Simulations predict a Chern insulating state with quantized anomalous Hall transport in insulators without an applied magnetic field. These strongly correlated
Externí odkaz:
https://doaj.org/article/179eef512b1f45fdb42d346bbb57b2e4
Autor:
Tristan Heider, Timm Gerber, Okan Köksal, Markus Eschbach, Ewa Młyńczak, Patrick Lömker, Pika Gospodaric, Mathias Gehlmann, Moritz Plötzing, Rossitza Pentcheva, Lukasz Plucinski, Claus M. Schneider, Martina Müller
Publikováno v:
Physical review / B 106(5), 054424 (2022). doi:10.1103/PhysRevB.106.054424
Physical review / B 106(5), 054424 (2022). doi:10.1103/PhysRevB.106.054424
The electronic structure of the ferromagnetic semiconductor EuO is investigated by means of spin- and angle-resolved photoemission spectroscopy (spin-ARPES) and density f
The electronic structure of the ferromagnetic semiconductor EuO is investigated by means of spin- and angle-resolved photoemission spectroscopy (spin-ARPES) and density f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f941f9983643e5fd357f1d4b252a63e2
https://bib-pubdb1.desy.de/record/483542
https://bib-pubdb1.desy.de/record/483542
Autor:
Okan Köksal, Rossitza Pentcheva
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019)
Based on density functional theory calculations including a Coulomb repulsion parameter U, we explore the topological properties of (LaXO3)2/(LaAlO3)4 (111) with X = 4d and 5d cations. The metastable ferromagnetic phases of LaTcO3 and LaPtO3 with pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doajarticles::3624c88050edadeb109d8b4e3b95ede8
http://link.springer.com/article/10.1038/s41598-019-53125-1
http://link.springer.com/article/10.1038/s41598-019-53125-1
Autor:
Cheng Zhang, Lu Chen, Zhelin Lin, Junyeob Song, Danyan Wang, Moxin Li, Okan Koksal, Zi Wang, Grisha Spektor, David Carlson, Henri J. Lezec, Wenqi Zhu, Scott Papp, Amit Agrawal
Publikováno v:
Light: Science & Applications, Vol 13, Iss 1, Pp 1-11 (2024)
Abstract Dielectric metasurfaces, composed of planar arrays of subwavelength dielectric structures that collectively mimic the operation of conventional bulk optical elements, have revolutionized the field of optics by their potential in constructing
Externí odkaz:
https://doaj.org/article/8c85e0ec85f04b43b6057b2a7896cf75
Autor:
Okan Köksal, Rossitza Pentcheva
The topological and thermoelectric properties of (EuO)$_{n}$/(MgO)$_{m}$(001) superlattices (SLs) are explored using density functional theory calculations including a Hubbard $U$ term together with Boltzmann transport theory. In (EuO)$_{1}$/(MgO)$_{
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbaaf1990d8c73ebbf763b1534b96960
Autor:
Arian, Arab, Xiaoran, Liu, Okan, Köksal, Weibing, Yang, Ravini U, Chandrasena, Srimanta, Middey, Mikhail, Kareev, Siddharth, Kumar, Marius-Adrian, Husanu, Zhenzhong, Yang, Lin, Gu, Vladimir N, Strocov, Tien-Lin, Lee, Jan, Minár, Rossitza, Pentcheva, Jak, Chakhalian, Alexander X, Gray
Publikováno v:
Nano letters. 19(11)
Artificial complex-oxide heterostructures containing ultrathin buried layers grown along the pseudocubic [111] direction have been predicted to host a plethora of exotic quantum states arising from the graphene-like lattice geometry and the interplay
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::dd534cf1b7efc65c8b9cf74842178e97
https://pubmed.ncbi.nlm.nih.gov/31644875
https://pubmed.ncbi.nlm.nih.gov/31644875
Autor:
Tien-Lin Lee, Ravini U. Chandrasena, Zhenzhong Yang, Rossitza Pentcheva, Alexander X. Gray, Mikhail Kareev, Jan Minár, Xiaoran Liu, Marius-Adrian Husanu, Weibing Yang, Okan Köksal, Srimanta Middey, Vladimir N. Strocov, Arian Arab, Lin Gu, Siddharth Kumar, Jak Chakhalian
Artificial complex-oxide heterostructures containing ultrathin buried layers grown along the pseudocubic [111] direction have been predicted to host a plethora of exotic quantum states arising from the graphene-like lattice geometry and the interplay
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a16ea4e319e168cce3fdd32f0a21af17
http://hdl.handle.net/11025/39562
http://hdl.handle.net/11025/39562
Confinement-driven electronic and topological phases in corundum-derived 3d-oxide honeycomb lattices
Using density functional theory calculations including an on-site Coulomb term, we explore electronic and possibly topologically nontrivial phases in $3d$ transition metal oxide honeycomb layers confined in the corundum structure ($\alpha$-Al$_2$O$_3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a378786066f6105c1663e983d95c285a
Autor:
Okan Köksal, Rossitza Pentcheva
Using density functional theory calculations with a Hubbard $U$, we explore topologically nontrivial phases in $X_2$O$_3$ honeycomb layers with $X=$ $4d$ and $5d$ cation inserted in the band insulator $\alpha$-Al$_2$O$_3$ along the [0001]-direction.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9596de1d23fa84c6db28269be900e8ab