Zobrazeno 1 - 10
of 10
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:
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
Autor:
Markus Albrecht, Fangfang Pan, Gerhard Raabe, Arto Valkonen, Okan Köksal, Kari Rissanen, Hai Yi
Publikováno v:
Chemistry: A European Journal. 22(20):6956
The ability of multiple CF3 -substituted arenes to act as acceptors for anions is investigated. The results of quantum-chemical calculations show that a high degree of trifluoromethyl substitution at the aromatic ring results in a positive quadrupole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b51a4a1b18843b8bcada3bdec3a0da5
http://juuli.fi/Record/0278613616
http://juuli.fi/Record/0278613616