Lorenz, T;
Heyer, O;
Garst, M;
Anfuso, F;
Rosch, A;
Ruegg, C;
Kramer, K;
(2008)
Diverging thermal expansion of the spin-ladder system (C5H12N)(2)CuBr4.
PHYS REV LETT
, 100
(6)
, Article 067208. 10.1103/PhysRevLett.100.067208.
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Abstract
We present high-resolution measurements of the c(star)-axis thermal expansion and magnetostriction of piperidinium copper bromide (C5H12N)(2)CuBr4. The experimental data at low temperatures are well accounted for by a two-leg spin-ladder Hamiltonian. The thermal expansion shows a complex behavior with various sign changes and approaches a 1 root T divergence at the critical fields. All low-temperature features are semiquantitatively explained within a free-fermion model; full quantitative agreement is obtained with quantum Monte Carlo simulations.
| Type: | Article |
|---|---|
| Title: | Diverging thermal expansion of the spin-ladder system (C5H12N)(2)CuBr4 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.100.067208 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.100.067208 |
| Language: | English |
| Additional information: | © 2008 The American Physical Society |
| Keywords: | MAGNETIC-FIELD, ANTIFERROMAGNETS, TLCUCL3 |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/150046 |
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