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Quantum-Critical Spin Dynamics in Quasi-One-Dimensional Antiferromagnets


Mukhopadhyay, Sutirtha; Klanjšek, Martin; Grbić, Mihael Srđan; Blinder, Remi; Mayaffre, Hadrien; Berthier, Claude; Horvatić, Mladen; Continentino, Mucio Amado; Paduan-Filho, Armando; Chiari, Brunetto; Piovesana Olivo
Quantum-Critical Spin Dynamics in Quasi-One-Dimensional Antiferromagnets // Physical Review Letters, 109 (2012), 17; 177206-1 doi:10.1103/PhysRevLett.109.177206 (međunarodna recenzija, članak, znanstveni)


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Naslov
Quantum-Critical Spin Dynamics in Quasi-One-Dimensional Antiferromagnets

Autori
Mukhopadhyay, Sutirtha ; Klanjšek, Martin ; Grbić, Mihael Srđan ; Blinder, Remi ; Mayaffre, Hadrien ; Berthier, Claude ; Horvatić, Mladen ; Continentino, Mucio Amado ; Paduan-Filho, Armando ; Chiari, Brunetto ; Piovesana Olivo

Izvornik
Physical Review Letters (0031-9007) 109 (2012), 17; 177206-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
magentism; onedimensionality; NMR; scaling

Sažetak
By means of nuclear spin-lattice relaxation rate 1/T1, we follow the spin dynamics as a function of the applied magnetic field in two gapped quasi-one-dimensional quantum antiferromagnets: the anisotropic spin-chain system NiCl2-4SC(NH2)2 and the spin-ladder system (C5H12N)2CuBr4. In both systems, spin excitations are confirmed to evolve from magnons in the gapped state to spinons in the gapless Tomonaga-Luttinger-liquid state. In between, 1/T1 exhibits a pronounced, continuous variation, which is shown to scale in accordance with quantum criticality. We extract the critical exponent for 1/T1, compare it to the theory, and show that this behavior is identical in both studied systems, thus demonstrating the universality of quantum-critical behavior.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekti:
119-1191458-1022 - Mikrovalna istraživanja novih materijala (Požek, Miroslav, MZOS ) ( POIROT)

Ustanove:
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Avatar Url Mladen Horvatić (autor)

Avatar Url Mihael Srđan Grbić (autor)

Citiraj ovu publikaciju

Mukhopadhyay, Sutirtha; Klanjšek, Martin; Grbić, Mihael Srđan; Blinder, Remi; Mayaffre, Hadrien; Berthier, Claude; Horvatić, Mladen; Continentino, Mucio Amado; Paduan-Filho, Armando; Chiari, Brunetto; Piovesana Olivo
Quantum-Critical Spin Dynamics in Quasi-One-Dimensional Antiferromagnets // Physical Review Letters, 109 (2012), 17; 177206-1 doi:10.1103/PhysRevLett.109.177206 (međunarodna recenzija, članak, znanstveni)
Mukhopadhyay, S., Klanjšek, M., Grbić, M., Blinder, R., Mayaffre, H., Berthier, C., Horvatić, M., Continentino, M., Paduan-Filho, A., Chiari, B. & Piovesana Olivo (2012) Quantum-Critical Spin Dynamics in Quasi-One-Dimensional Antiferromagnets. Physical Review Letters, 109 (17), 177206-1 doi:10.1103/PhysRevLett.109.177206.
@article{article, year = {2012}, pages = {177206-1-177206-5}, DOI = {10.1103/PhysRevLett.109.177206}, keywords = {magentism, onedimensionality, NMR, scaling}, journal = {Physical Review Letters}, doi = {10.1103/PhysRevLett.109.177206}, volume = {109}, number = {17}, issn = {0031-9007}, title = {Quantum-Critical Spin Dynamics in Quasi-One-Dimensional Antiferromagnets}, keyword = {magentism, onedimensionality, NMR, scaling} }
@article{article, year = {2012}, pages = {177206-1-177206-5}, DOI = {10.1103/PhysRevLett.109.177206}, keywords = {magentism, onedimensionality, NMR, scaling}, journal = {Physical Review Letters}, doi = {10.1103/PhysRevLett.109.177206}, volume = {109}, number = {17}, issn = {0031-9007}, title = {Quantum-Critical Spin Dynamics in Quasi-One-Dimensional Antiferromagnets}, keyword = {magentism, onedimensionality, NMR, scaling} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


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