Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Berritta, Marco"'
Publikováno v:
Phys. Rev. Lett. 131, 156702 (2023)
The orbital Hall effect has been theoretically predicted but its direct observation is a challenge. Here, we report the magneto-optical detection of current-induced orbital accumulation at the surface of a light 3$d$ transition metal, Cr. The orbital
Externí odkaz:
http://arxiv.org/abs/2306.10673
Autor:
Shokeen, Vishal, Heber, Michael, Kutnyakhov, Dmytro, Wang, Xiaocui, Yaroslavtsev, Alexander, Maldonado, Pablo, Berritta, Marco, Wind, Nils, Wenthaus, Lukas, Pressacco, Federico, Min, Chul-Hee, Nissen, Matz, Mahatha, Sanjoy K., Dziarzhytski, Siarhei, Oppeneer, Peter M., Rossnagel, Kai, Elmers, Hans-Joachim, Schönhense, Gerd, Dürr, Hermann A.
Identifying the microscopic nature of non-equilibrium energy transfer mechanisms among electronic, spin and lattice degrees of freedom is central for understanding ultrafast phenomena such as manipulating magnetism on the femtosecond timescale. Here
Externí odkaz:
http://arxiv.org/abs/2306.10637
Publikováno v:
Phys. Rev. B 109, 174441 (2024)
Atomistic spin dynamics (ASD) is a standard tool to model the magnetization dynamics of a variety of materials. The fundamental dynamical model underlying ASD is entirely classical. In this paper, we present two approaches to effectively incorporate
Externí odkaz:
http://arxiv.org/abs/2305.17082
Autor:
Bongiorno, Christian, Berritta, Marco
In optimal covariance cleaning theory, minimizing the Frobenius norm between the true population covariance matrix and a rotational invariant estimator is a key step. This estimator can be obtained asymptotically for large covariance matrices, withou
Externí odkaz:
http://arxiv.org/abs/2304.14098
Autor:
Cerisola, Federico, Berritta, Marco, Scali, Stefano, Horsley, Simon A. R., Cresser, James D., Anders, Janet
The equilibrium properties of nanoscale systems can deviate significantly from standard thermodynamics due to their coupling to an environment. For the generalised $\theta$-angled spin-boson model, we first derive a compact and general form of the cl
Externí odkaz:
http://arxiv.org/abs/2204.10874
Autor:
Dannegger, Tobias, Berritta, Marco, Carva, Karel, Selzer, Severin, Ritzmann, Ulrike, Oppeneer, Peter M., Nowak, Ulrich
Publikováno v:
Phys. Rev. B 104, 060413 (2021)
We explore the possibility of ultrafast, coherent all-optical magnetization switching in antiferromagnets by studying the action of the inverse Faraday effect in CrPt, an easy-plane antiferromagnet. Using a combination of density functional theory an
Externí odkaz:
http://arxiv.org/abs/2104.11820
Autor:
Seifert, Tom S., Martens, Ulrike, Radu, Florin, Ribow, Mirkow, Berritta, Marco, Nádvorník, Lukas, Starke, Ronald, Jungwirth, Tomas, Wolf, Martin, Radu, Ilie, Münzenberg, Markus, Oppeneer, Peter M., Woltersdorf, Georg, Kampfrath, Tobias
Publikováno v:
Advanced Materials 2021, 2007398
The anomalous Hall effect (AHE) is a fundamental spintronic charge-to-charge-current conversion phenomenon and closely related to spin-to-charge-current conversion by the spin Hall effect. Future high-speed spintronic devices will crucially rely on s
Externí odkaz:
http://arxiv.org/abs/2011.01676
Publikováno v:
Phys. Rev. Materials 5, 074407 (2021)
Electrical control of magnetization is of crucial importance for integrated spintronics devices. Spin-orbit torques (SOT) in heavy-metal/ferromagnetic heterostructures have emerged as promising tool to achieve efficiently current-induced magnetizatio
Externí odkaz:
http://arxiv.org/abs/2004.11942
Autor:
Ciuciulkaite, Agne, Mishra, Kshiti, Moro, Marcos V., Chioar, Ioan-Augustin, Rowan-Robinson, Richard M., Parchenko, Sergii, Kleibert, Armin, Lindgren, Bengt, Andersson, Gabriella, Davies, Carl, Kimel, Alexey, Berritta, Marco, Oppeneer, Peter M., Kirilyuk, Andrei, Kapaklis, Vassilios
Publikováno v:
Phys. Rev. Materials 4, 104418 (2020)
Amorphous Tb$_{x}$Co$_{100-x}$ magnetic alloys exhibit a list of intriguing properties, such as perpendicular magnetic anisotropy, high magneto-optical activity and magnetization switching using ultrashort optical pulses. Varying the Tb:Co ratio in t
Externí odkaz:
http://arxiv.org/abs/2002.07544
Publikováno v:
Nature Communications 10, 5381 (2019)
Efficient manipulation of magnetic order with electric current pulses is desirable for achieving fast spintronic devices. The Rashba-Edelstein effect, wherein a spin polarization is electrically induced in noncentrosymmetric systems, provides a mean
Externí odkaz:
http://arxiv.org/abs/1905.08279