Quantum Critical point of a Spin-1/2 antiferromagnetic XXZ chain in a longitudinal magnetic field
A spin-1/2 anisotropic XXZ spin chain in a longitudinal field applied parallel to the easy axis shows exotic physics. Above a critical field, the long-range antiferromagnetic order is destroyed and the system enters a gapless critical regime known as a Tomonaga Luttinger Liquid. In this phase as well as spinon-pair excitations (known as psinons), bound states of magnons can also be excited, these are known as Bethe strings which we have verified experimentally. In this proposal we wish to study the quantum critical phase transition between the Neel ordered and the quantum critical regime. Our measurements will focus on the search for Energy/Temperature critical scaling which is a signature of such a quantum critical point.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
Bella Lake; BOEHM Martin; ISLAM A T M Nazmul; MA Jie and Puzniak. (2021). Quantum Critical point of a Spin-1/2 antiferromagnetic XXZ chain in a longitudinal magnetic field. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-03-1750
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.