Zobrazeno 1 - 10
of 2 367
pro vyhledávání: '"A, Ptok"'
On the Origin of $A$-type Antiferromagnetism and Chiral Split Magnons in Altermagnetic $\alpha$-MnTe
Autor:
Alaei, Mojtaba, Sobieszczyk, Pawel, Ptok, Andrzej, Rezaei, Nafise, Oganov, Artem R., Qaiumzadeh, Alireza
The origin of the $A$-type antiferromagnetic ordering, where ferromagnetic layers couple antiferromagnetically, in the semiconductor altermagnet $\alpha$-MnTe has been a subject of ongoing debate. Experimentally, $\alpha$-MnTe exhibits a nearest-neig
Externí odkaz:
http://arxiv.org/abs/2411.11985
Autor:
Mahraj, Issam, Ptok, Andrzej
Systems with P2$_{1}$3 symmetry are characterized by the realization of chiral edge modes, propagating in one direction along closed loops around some high symmetry points of the Brillouin zone. We study the phononic and electronic properties of EuPt
Externí odkaz:
http://arxiv.org/abs/2409.12807
Autor:
Ptok, Andrzej
Publikováno v:
Phys. Rev. B 109, 216501 (2024)
In a recent paper [T. Shang et al., Phys. Rev. B 107, 224504 (2023)], the authors study the physical properties of TaReSi compounds having Ima2 structure. This noncentrosymmetric structure is proposed to be the source of topological properties for me
Externí odkaz:
http://arxiv.org/abs/2406.17920
Autor:
Dan, Shovan, Ptok, Andrzej, Pavlosiuk, Orest, Singh, Karan, Wiśniewski, Piotr, Kaczorowski, Dariusz
Publikováno v:
Adv. Funct. Mater. 2024, 2402415
We present theoretical and experimental results exploring a half-Heusler compound TmPdSb with unusual band order and metallic surface states. Typically, the half-Heusler systems exhibit topological features in a semimetallic state, and trivial ones i
Externí odkaz:
http://arxiv.org/abs/2406.10094
Autor:
Elius, Iftakhar Bin, Casey, Jacob F, Regmi, Sabin, Buturlim, Volodymyr, Sakhya, Anup Pradhan, Sprague, Milo, Mondal, Mazharul Islam, Valadez, Nathan, Kumay, Arun K, Scrivens, Justin, Venkateswara, Yenugonda, Dan, Shovan, Romanova, Tetiana, Pathak, Arjun K, Gofryk, Krzysztof, Ptok, Andrzej, Kaczorowski, Dariusz, Neupane, Madhab
The LnSbTe (Ln = Lanthanides) family, like isostructural ZrSiS type compounds, has emerged as a fertile playground for exploring the interaction of electronic correlations and magnetic ordering with the nodal line band topology. Here, we report a det
Externí odkaz:
http://arxiv.org/abs/2406.09054
Autor:
Rosmus, Marcin, Olszowska, Natalia, Bukowski, Zbigniew, Piekarz, Przemysław, Ptok, Andrzej, Starowicz, Paweł
LaCuSb$_{2}$ is a superconductor with a transition temperature of about $T_\text{c} = 0.9$K and is a potential platform where Dirac fermions can be experimentally observed. In this paper, we report systematic high-resolution studies of its electronic
Externí odkaz:
http://arxiv.org/abs/2403.17737
Autor:
Basak, Surajit, Ptok, Andrzej
Publikováno v:
Acta Phys. Pol. A 145, 93 (2024)
Altermagnetic ruthenium oxide RuO$_{2}$ crystallizes with P4$_{2}$/mnm symmetry. Here we discuss the lattice dynamics of this structure. We show and discuss the phonon dispersion and density of states. The phonon dispersion curves contain several Dir
Externí odkaz:
http://arxiv.org/abs/2403.07609
Autor:
Basak, Surajit, Kobiałka, Aksel, Sternik, Małgorzata, Łażewski, Jan, Jochym, Paweł T., Oleś, Andrzej M., Piekarz, Przemysław, Ptok, Andrzej
Publikováno v:
Computational Materials Science 244, 113149 (2024)
We present the pressure dependence of the electronic and dynamical properties of six different CoGe phases: orthorhombic Cmmm, hexagonal P6/mmm and P$\bar{6}$2m, monoclinic C2/m, cubic P2$_{1}$3, and orthorhombic Pnma. Using first-principles DFT calc
Externí odkaz:
http://arxiv.org/abs/2403.07580
Autor:
Ptok, Andrzej, Basak, Surajit, Kobiałka, Aksel, Sternik, Małgorzata, Łażewski, Jan, Jochym, Paweł T., Oleś, Andrzej M., Piekarz, Przemysław
Publikováno v:
Phys. Rev. Materials 8, L080601 (2024)
Electron-correlation-driven phonon soft modes have been recently reported in the antiferromagnetic kagome FeGe compound and associated with the observed charge density wave (CDW). In this paper, we present a systematic investigation of the CDW origin
Externí odkaz:
http://arxiv.org/abs/2403.00297
Autor:
Sprague, Milo, Sakhya, Anup Pradhan, Regmi, Sabin, Mondal, Mazharul Islam, Elius, Iftakhar Bin, Valadez, Nathan, Booth, Kali, Romanova, Tetiana, Ptok, Andrzej, Kaczorowski, Dariusz, Neupane, Madhab
Publikováno v:
Phys. Rev. Materials 8, 054411 ( 2024)
We studied the electronic structure of a layered antiferromagnetic metal, EuSnP, in the paramagnetic and in the antiferromagnetic phase using angle resolved photoemission spectroscopy (ARPES) alongside density functional theory (DFT) based first prin
Externí odkaz:
http://arxiv.org/abs/2311.02785