M. Surynek, J. Zubáč, K. Olejník, A. Farkaš, F. Křížek, L. Nádvorník, P. Kubascik, F. Trojanek, R. P. Campion, V. Novák, T. Jungwirth, P. Nemec
Picosecond transfer from short-term to long-term memory in analog antiferromagnetic memory device
submitted to Newton
A. Baďura, Warlley H. Campos, Venkata K. Bharadwaj, Ismaïla Kounta, Lisa Michez, Matthieu Petit, Javier Rial, Miina Leiviskä, Vincent Baltz, F. Křížek, D. Kriegner, J. Zemen, Sjoerd Telkamp, Sebastian Sailler, Michaela Lammel, Rodrigo Jaeschke Ubiergo, Anna Birk Hellenes, Rafael González-Hernández, J. Sinova, T. Jungwirth, Sebastian T. B. Goennenwein, L. Šmejkal, H. Reichlová
Observation of the anomalous Nernst effect in altermagnetic candidate Mn5Si3
submitted to Nat. Phys.
npj Spintronics 2 (2024) 39(1)-39(8).
M. Hinderling, S.C. ten Kate, D.Z. Haxell, M. Coraiola, S. Paredes, E. Cheah, F. Křížek, R. Schott, W. Wegscheider, D. Sabonis, F. Nichele
PRX Quantum 5 (2024) 030337(1)-030337(15).
M. Coraiola, D.Z. Haxell, D. Sabonis, M. Hinderling, S.C. ten Kate, E. Cheah, F. Křížek, R. Schott, W. Wegscheider, F. Nichele
Physical Review X 14 (2024) 031024(1)-031024(9).
M. Coraiola, A. E. Svetogorov, D. Z. Haxell, D. Sabonis, M. Hinderling, S. C. Ten Kate, E. Cheah, F. Křížek, R. Schott, W. Wegscheider, J. C. Cuevas, W. Belzig, F. Nichele
ACS Nano 18 (2024) 9221-9231.
S. Reimers, O. Gomonay, O. J. Amin, F. Křížek, L. X. Barton, Y. Lytvynenko, S. F. Poole, V. Novák, R. P. Campion, F. Maccherozzi, G. Carbone, A. Björling, Y. Niu, E. Golias, D. Kriegner, J. Sinova, M. Kläui, M. Jourdan, S. S. Dhesi, K. W. Edmonds, P. Wadley
Physical Review Applied 21 (2024) 064030(1)-064030(11).
P. Kubaščík, A. Farkaš, K. Olejník, T. Troha, M. Hývl, F. Křížek, D. C. Joshi, T. Ostatnický, J. Jechumtál, E. Schmoranzerová, R. P. Campion, J. Zázvorka, V. Novák, P. Kužel, T. Jungwirth, P. Němec, L. Nádvorník
Advanced Physics Research 3 (2024) 2300075(1)-2300075(11).
K. Olejník, Z. Kašpar, J. Zubáč, S. Telkamp, A. Farkaš, D. Kriegner, K. Výborný, J. Železný, Z. Šobáň, P. Zeng, T. Jungwirth, V. Novák, F. Křížek
Quench switching of Mn2As
submitted to Phys. Rev. B
M. Drimmer, S. Telkamp, F. L. Fischer, I. C. Rodrigues, C. Todt, F. Křížek, D. Kriegner, Ch. Müller, W. Wegscheider, Y. Chu
The performance of superconducting microwave circuits is strongly influenced by the material properties of the superconducting film and substrate. While progress has been made in understanding the importance of surface preparation and the effect of surface oxides, the complex effect of superconductor film structure on microwave losses is not yet fully understood. In this study, we investigate the microwave properties of niobium resonators with different crystalline properties and related surface topographies. We analyze a series of magnetron sputtered films in which the Nb crystal orientation and surface topography are changed by varying the substrate temperatures between room temperature and 975 K. The lowest-loss resonators that we measure have quality factors of over one million at single-photon powers, among the best ever recorded using the Nb on sapphire platform. We observe the highest quality factors in films grown at an intermediate temperature regime of the growth series (550 K) where the films display both preferential ordering of the crystal domains and low surface roughness. Furthermore, we analyze the temperature-dependent behavior of our resonators to learn about how the quasiparticle density in the Nb film is affected by the niobium crystal structure and the presence of grain boundaries. Our results stress the connection between the crystal structure of superconducting films and the loss mechanisms suffered by the resonators and demonstrate that even a moderate change in temperature during thin film deposition can significantly affect the resulting quality factors.
S. Telkamp, T. Antonelli, C. Todt, M. Hinderling, M. Coraiola, D. Haxell, Sofieke C. ten Kate, D. Sabonis, P. Zeng, R. Schott, E. Cheah, Ch. Reichl, F. Nichele, F. Křížek, W. Wegscheider
accepted in Advanced Electronic Materials
A. Garrison Linn, P. Hao, K. N. Gordon, D. Narayan, B. S. Berggren, N. Speiser, S. Reimers, R. P. Campion, V. Novák, S. S. Dhesi, T. Kim, C. Cacho, L. Šmejkal, T. Jungwirth, J. D. Denlinger, P. Wadley, D. Dessau
npj Quantum Materials 8 (2023) 19(1)-19(8).
O. J. Amin, S. F. Poole, S. Reimers, L. X. Barton, F. Maccherozzi, S. S. Dhesi, V. Novák, F. Křížek, J. S. Chauhan, R. P. Campion, A. W. Rushforth, T. Jungwirth, O. A. Tretiakov, K. W. Edmonds, P. Wadley
Nature Nanotechnology 18 (2023) 849-853.
Z. Lei, E. Cheah, F. Křížek, R. Schott, T. Bähler, P. Märki, W. Wegscheider, M. Shayegan, T. Ihn, K. Ensslin
Physical Review Research 5 (2023) 013117(1)-013117(11).
D. Z. Haxell, E. Cheah, F. Křížek, R. Schott, M. F. Ritter, M. Hinderling, W. Belzig, Ch. Bruder, W. Wegscheider, H. Riel, F. Nichele
Physical Review Letters 130 (2023) 087002(1)-087002(6).
M. Hinderling, D. Sabonis, S. Paredes, D.Z. Haxell, M. Coraiola, S.C. ten Kate, E. Cheah, F. Křížek, R. Schott, W. Wegscheider, F. Nichele
Physical Review Applied 19 (2023) 054026(1)-054026(18).
D. Z. Haxell, M. Coraiola, M. Hinderling, S. C. ten Kate, D. Sabonis, A. E. Svetogorov, W. Belzig, E. Cheah, F. Křížek, R. Schott, W. Wegscheider, F. Nichele
Nano Letters 23 (2023) 7532(1)-7532(7).
Marco Coraiola, D. Z. Haxell, D. Sabonis, H. Weisbrich, A. E. Svetogorov, M. Hinderling, S. C. ten Kate, E. Cheah, F. Křížek, R. Schott, W. Wegscheider, J. C. Cuevas, W. Belzig, F. Nichele
Nature Communications 14 (2023) 6784(1)-6784(7).
E. Cheah, D. Z. Haxell, R. Schott, P. Zeng, E. Paysen, S. C. ten Kate, M. Coraiola, M. Landstetter, A. B. Zadeh, A. Trampert, M. Sousa, H. Riel, F. Nichele, W. Wegscheider, F. Křížek
Physical Review Materials 7 (2023) 073403(1)-073403(11).
D. Z. Haxell, M. Coraiola, D. Sabonis, M. Hinderling, S. C ten Kate, E. Cheah, F. Křížek, R. Schott, W. Wegscheider, W. Belzig, J. C. Cuevas, F. Nichele
Nature Communications 14 (2023) 14:6798(1)-14:6798(8).
D. Z. Haxell, M. Coraiola, D. Sabonis, M. Hinderling, S. C .ten Kate, E. Cheah, F. Křížek, R. Schott, W. Wegscheider, F. Nichele
ACS Nano 17 (2023) 18139-18147.
C. Todt, S. Telkamp, F. Křížek, Ch. Reichl, M. Gabureac, R. Schott, E. Cheah, P. Zeng, T. Weber, A. Müller, Ch. Vockenhuber, M. Bahrami Panah, W. Wegscheider
Physical Review Materials 7 (2023) 076201(1)-076201(12).
O. J. Amin, S. Reimers, F. Maccherozzi, S. S. Dhesi, V. Novák, R. P. Campion, K. W. Edmonds, P. Wadley
APL Materials 11 (2023) 091112(1)-091112(5).
S. Beckert, J. Godinho, F. Johnson, J. Kimák, E. Schmoranzerová, J. Zemen, Z. Šobáň, K. Olejník, J. Železný, J. Wunderlich, P. Němec, D. Kriegner, A. Thomas, S. T. B. Goennenwein, L. F. Cohen, H. Reichlová
Physical Review B 108 (2023) 024420(1)-024420(9).
S. F. Poole, L. X. Barton, M. Wang, P. Manuel, D. Khalyavin, S. Langridge, K. W. Edmonds, R. P. Campion, V. Novák, P. Wadley
Applied Physics Letters 121 (2022) 052402(1)-052402(6).
F. Křížek, S. Reimers, Z. Kašpar, A. Marmodoro, J. Michalička, O. Man, A. Edstrom, O. J. Amin, K. W. Edmonds, R. P. Campion, F. Maccherozzi, S. S. Dnes, J. Zubáč, J. Železný, K. Výborný, K. Olejník, V. Novák, J. Rusz, J. C. Idrobo, P. Wadley, T. Jungwirth
Science Advances 8 (2022) eabn3535(1)-eabn3535(10).
Nature 12 (2022) 21550 (1)-21550 (10).
Advanced Functional Materials 22 (2022) 2107403(1)-2107403(9).
S. Reimers, D. Kriegner, O. Gomonay, D. Carbone, F. Křížek, V. Novák, R. P. Campion, F Maccherozzi, Alexander Bjorling, O. J. Amin, L. X. Barton, S. F. Poole, K. A. Omari, J. Michalicka, O. Man, J. Sinova, T. Jungwirth, P. Wadley, S. S. Dhesi, K. W. Edmonds
Nature Communications 13 (2022) 724(1)-724(7).
F. Johnson, J. Kimák, J. Zemen, Z. Šobáň, E. Schmoranzerová, J. Godinho, P. Němec, S. Beckert, H. Reichlová, D. Boldrin, J. Wunderlich, L. F. Cohen
Applied Physics Letters 120 (2022) 232402-1-232402-6.
J. J. F. Heitz, L. Nádvorník, V. Balos, Y. Behovits, A. L. Chekhov, T. S. Seifert, K. Olejník, Z. Kašpar, K. Geishendorf, V. Novák, R. P. Campion, M. Wolf, T. Jungwirth, T. Kampfrath
Physical Review Applied 16 (2021) 064047(1)-064047(13).
Physical Review B 104 (2021) 184424(1)-184424(7).
Z. Kašpar, M. Surýnek, J. Zubáč, F. Křížek, V. Novák, R. P. Campion, M. S. Wörnle, P. Gambardella, X. Martí, P. Němec, K. W. Edmonds, S. Reimers, O. J. Amin, F. Maccherozzi, S. S. Dhesi, P. Wadley, J. Wunderlich, T. Jungwirth
Nature Electronics 4 (2021) 30-37.
D. J. Carrad, M. Bjergfelt, T. Kanne, M. Aagesen, F. Křížek, E. M. Fiordaliso, E. Johnson, J. Nygård, T. Sand Jespersen
Advanced Materials 9 (2020) 1908411 1-1908411 9.
S. A. Khan*, Ch. Lampadaris, A. Cui, L. Stampfer, Y. Liu, S. J. Pauka, M. E. Cachaza, E. M. Fiordaliso, Jung-Hyun Kang, S. Korneychuk, T. Mutas, J. E. Sestoft, F. Křížek, R. Tanta, M. C. Cassidy, T. S. Jespersen, P. Krogstrup*
ACS Nano 4 (2020) 1-11.
Journal of Applied Physics 127 (2020) 233904(1)-233904(10).
N. Lambert, A. Taylor, P. Hubík, J. Bulíř, J. More Chevalier, H. Karaca, C. Fleury, J. Voves, Z. Šobáň, D. Pogany, V. Mortet
Diamond and Related Materials 109 (2020) 108003(1)-108003(11).
Richard Schlitz, Peter Swekis, Anastasios Markou, H. Reichlová, Michaela Lammel, Jacob Gayles, Andy Thomas, Kornelius Nielsch, Claudia Felser, Sebastian T. B. Goennenwein
Nano Letters 19 (2020) 2366-2370.
Gyu-Hyeon Park, H. Reichlová, Richard Schlitz, Michaela Lammel, Anastasios Markou, Peter Swekis, P. Ritzinger, D. Kriegner, Jonathan Noky, Jacob Gayles, Yan Sun, Claudia Felser, Kornelius Nielsch, Sebastian T. B. Goennenwein, Andy Thomas
Physical Review B 101 (2020) 060406(1)-060406(7).
Spin Current in an Antiferromagnet is Coherent
Physical Review Letters 83 (2020) 1-2.
F. Křížek, Z. Kašpar, A. Vetushka, D. Kriegner, E. M. Fiordaliso, J. Michalička, O. Man, J. Zubáč, M. Brajer, V. A. Hills, K. W. Edmonds, P. Wadley, R. P. Campion, K. Olejník, T. Jungwirth, V. Novák
Physical Review Materials 4 (2020) 014409(1)-014409(9).
S Entler, I Duran, K Kovarik, P Sladek, O Grover, M Vilemova, D Najman, M Kohout, J Sebek, K. Výborný, Z. Šobáň
Fusion Engineering and Design 153 (2020) 111454-.
T. Janda, J. Godinho, T. Ostatnicky, E. Pfitzner, G. Ulrich, A. Hoehl, S. Reimers, Z. Šobáň, T. Metzger, H. Reichlová, V. Novák, R. Campion, J. Heberle, P. Wadley, K. Edmonds, O. Amin, J. Chauhan, S. Dhesi, F. Maccherozzi, R. Otxoa, P. Roy, K. Olejník, P. Němec, T. Jungwirth, B. Kaestner, J. Wunderlich
Physical Review Materials 4 (2020) 094413(1)-094413(9).
Current-induced fragmentation of antiferromagnetic domains
arXiv:1912.05287
M. Wang, C. Andrews, S. Reimers, O. J. Amin, P. Wadley, R. P. Campion, S. F. Poole, J. Felton, K. W. Edmonds, B. L. Gallagher, A. W. Rushforth, O. Makarovsky, K. Gas, M. Sawicki, D. Kriegner, J. Zubáč, K. Olejník, V. Novák, T. Jungwirth, M. Shahrokhvand, U. Zeitler, S. S. Dhesi, F. Maccherozzi
Physical Review B 101 (2020) 094429(1)-094429(8).
Nanomaterials 10 (2020) 2059-2059.
P. Aseev, A. Fursina, F. Boekhout, F. Křížek, J. E. Sestoft, F. Borsoi, S. Heedt, G. Wang, L. Binci, S. Martí-Sánchez, T. Swoboda, R. Koops, E. Uccelli, J. Arbiol, P. Krogstrup, L. P. Kouwenhoven, P. Caroff
Nano Letters 19 (1) (2019) 218-227.
M. Zukerstein, F. Trojanek, B. Rezek, Z. Šobáň, M. Kozak, P. Maly
Applied Physics Letters 115 (2019) 161104 -161104.
H. Reichlová, T. Janda, J. Godinho, A. Markou, D. Kriegner, R. Schlitz, J. Železný, Z. Šobáň, M. Bejarano, H. Schultheiss, P. Nemec, T. Jungwirth, C. Felser, J. Wunderlich, S. T. B. Goennenwein
Nature Communications 10 (2019) 5459(1)-5459(6).
Journal of Alloys and Compounds 775 (2019) 969-974.