Thermal fluctuations in artificial spin ice

Nature Nanotechnology

Volumn 9, Issue 7, 2014, Pages 514-519

  Kapaklis, Vassilios ^a   Arnalds, Unnar B ^a   Farhan, Alan ^b,c   Chopdekar, Rajesh V ^b   Balan, Ana ^b   Scholl, Andreas ^d   Heyderman, Laura J ^b,c   Hjörvarsson, Björgvin ^a  

^a UPPSALA UNIVERSITY   (Sweden)

^b PAUL SCHERRER INSTITUTE   (Switzerland)

^c ETH ZURICH   (Switzerland)

^d LAWRENCE BERKELEY NATIONAL LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BOLTZMANN EQUATION; MAGNETISM; SPIN FLUCTUATIONS; THERMODYNAMICS;

BLOCKING TEMPERATURE; BOLTZMANN DISTRIBUTION; INTERACTION STRENGTH; MAGNETIC EXCITATIONS; MAGNETIC FLUCTUATION; TEMPERATURE-INDUCED; THERMAL EQUILIBRIUMS; THERMAL FLUCTUATIONS;

ICE;

ARTICLE; ARTIFICIAL SPIN ICE; DENSITY; EXCITATION; IMAGING; MAGNETIC FIELD; MAGNETISM; PRIORITY JOURNAL; STRENGTH; TEMPERATURE DEPENDENCE; TEMPERATURE RELATED PHENOMENA; THERMAL FLUCTUATION; TRANSITION TEMPERATURE; DYNAMICS; EQUILIBRIUM CONSTANT; FREEZING; ISLAND OF STABILITY; MATERIAL STATE; NANOTECHNOLOGY; PHYSICAL PHASE; THERMAL ANALYSIS;

ICE; MAGNETIC FIELDS; SPIN LABELS; WATER;

EID: 84904049617     PISSN: 17483387     EISSN: 17483395     Source Type: Journal    
DOI: 10.1038/nnano.2014.104     Document Type: Article

References (33)

1. Nisoli, C., Moessner, R. & Schiffer, P. Colloquium. Artificial spin ice: Designing and imaging magnetic frustration. Rev. Mod. Phys. 85, 1473-1490 (2013).
2. Heyderman, L. J. & Stamps, R. L. Artificial ferroic systems: Novel functionality from structure, interactions and dynamics. J. Phys. 25, 363201 (2013).
3. Castelnovo, C., Moessner, R. & Sondhi, S. L. Magnetic monopoles in spin ice. Nature 451, 42-45 (2008).
4. Giblin, S. R., Bramwell, S. T., Holdsworth, P. C. W., Prabhakaran, D. & Terry, I. Creation and measurement of long-lived magnetic monopole currents in spin ice. Nature Phys. 7, 252-258 (2011).
5. Pauling, L. The structure and entropy of ice and of other crystals with some randomness of atomic arrangement. J. Am. Chem. Soc. 57, 2680-2684 (1935).
6. Giauque, W. & Stout, J. The entropy of water and the third law of thermodynamics. The heat capacity of ice from 15 to 273 8K. J. Am. Chem. Soc. 1144-1150 (1936).
7. Harris, M. J., Bramwell, S. T., McMorrow, D. F., Zeiske, T. & Godfrey, K. W. Geometrical frustration in the ferromagnetic pyrochlore Ho2Ti2O7. Phys. Rev. Lett. 79, 2554-2557 (1997).
8. Bramwell, S. T. & Gingras, M. J. P. Spin ice state in frustrated magnetic pyrochlore materials. Science 294, 1495-1501 (2001).
9. Jaubert, L. D. C. & Holdsworth, P. C. W. Signature of magnetic monopole and Dirac string dynamics in spin ice. Nature Phys. 5, 258-261 (2009).
10. Bramwell, S. T. et al. Measurement of the charge and current of magnetic monopoles in spin ice. Nature 461, 956-959 (2009).
11. Wang, R. F. et al. Artificial 'spin ice' in a geometrically frustrated lattice of nanoscale ferromagnetic islands. Nature 439, 303-306 (2006).
12. Morgan, J. P., Stein, A., Langridge, S. & Marrows, C. H. Thermal ground-state ordering and elementary excitations in artificial magnetic square ice. Nature Phys. 7, 75-79 (2011).
13. Arnalds, U. B. et al. Thermalized ground state of artificial kagome spin ice building blocks. Appl. Phys. Lett. 101, 112404 (2012).
14. Farhan, A. et al. Exploring hyper-cubic energy landscapes in thermally active finite artificial spin-ice systems. Nature Phys. 9, 375-382 (2013).
15. Farhan, A. et al. Direct observation of thermal relaxation in artificial spin ice. Phys. Rev. Lett. 111, 057204 (2013).
16. Mengotti, E. et al. Real-space observation of emergent magnetic monopoles and associated Dirac strings in artificial kagome spin ice. Nature Phys. 7, 68-74 (2011).
17. Bramwell, S. T. et al. Measurement of the charge and current of magnetic monopoles in spin ice. Nature 461, 956-959 (2009).
18. Ladak, S., Read, D. E., Perkins, G. K., Cohen, L. F. & Branford, W. R. Direct observation of magnetic monopole defects in an artificial spin-ice system. Nature Phys. 6, 359-363 (2010).
19. Kapaklis, V. et al. Melting artificial spin ice. New J. Phys. 14, 035009 (2012).
20. Ke, X., Li, J., Zhang, S., Nisoli, C., Crespi, V. H. & Schiffer, P. Tuning magnetic frustration of nanomagnets in triangular-lattice geometry. Appl. Phys. Lett. 93, 252504 (2008).
21. Budrikis, Z. et al. Disorder strength and field-driven ground state domain formation in artificial spin ice: Experiment, simulation, and theory. Phys. Rev. Lett. 109, 037203 (2012).
22. Bedanta, S. & Kleemann, W. Supermagnetism. J. Phys. D 42, 013001 (2008).
23. Wysin, G. M., Moura-Melo, W. A., Mo'l, L. A. S. & Pereira, A. R. Dynamics and hysteresis in square lattice artificial spin ice. New J. Phys. 15, 045029 (2013).
24. Zhang, S. Crystallites of magnetic charges in artificial spin ice. Nature 500, 553-557 (2013).
25. Liba'l, A., Reichhardt, C. & Reichhardt, C. Realizing colloidal artificial ice on arrays of optical traps. Phys. Rev. Lett. 97, 228302 (2006).
26. Wernsdorfer, W. et al. Experimental evidence of the Ne'el-Brown model of magnetization reversal. Phys. Rev. Lett. 78, 1791-1794 (1997).
27. Osborn, J. A. Demagnetizing factors of the general ellipsoid. Phys. Rev. 67, 351-357 (1945).
28. Porro, J. M., Bedoya-Pinto, A., Berger, A. & Vavassori, P. Exploring thermally induced states in square artificial spin-ice arrays. New J. Phys. 15, 055012 (2013).
29. Heyderman, L. J. Artificial spin ice: Crystal-clear order. Nature Nanotech. 8, 705-706 (2013).
30. Cowburn, R. P. & Welland, M. Room temperature magnetic quantum cellular automata. Science 287, 1466-1468 (2000).
31. Imre, A. et al. Majority logic gate for magnetic quantum-dot cellular automata. Science 311, 205-208 (2006).
32. Papaioannou, E. Th., Kapaklis, V., Taroni, A., Marcellini, M. & Hjörvarsson, B. Dimensionality and confinement effects in d-doped Pd(Fe) layers. J. Phys. 22, 236004 (2010).
33. Scholl, A. et al. Observation of antiferromagnetic domains in epitaxial thin films. Science 287, 1014-1016 (2000). Higher Education