Joule-Thomson temperature of a triplon system of dimerized quantum magnets

Simple item page
buir.contributor.authorRakhimov, Abdulla
buir.contributor.authorTanatar, Bilal
buir.contributor.orcidTanatar, Bilal|0000-0002-5246-0119
dc.citation.epage8en_US
dc.citation.issueNumber16en_US
dc.citation.spage1en_US
dc.citation.volumeNumber384en_US
dc.contributor.authorRakhimov, Abdulla
dc.contributor.authorNishonov, M.
dc.contributor.authorTanatar, Bilal
dc.date.accessioned2021-03-05T12:36:48Z
dc.date.available2021-03-05T12:36:48Z
dc.date.issued2020
dc.departmentDepartment of Physicsen_US
dc.description.abstractIt is well known that, for a system of atomic (molecular) gases both kinds of processes, isentropic as well as isenthalpic are realizable and widely used in refrigeration technique. Particularly, magnetic refrigeration exploits always isentropic process, characterized by Grüneisen parameter ΓH=(∂T/∂H)S/T. We propose that, for quantum magnets an isenthalpic (Joule-Thomson) process, characterized by Joule-Thomson coefficient κT=(∂T/∂H)W may be also available. We considered this effect for a simple paramagnetic and dimerized spin-gapped quantum magnets at low temperatures. We have shown that for both kind of materials refrigeration by using Joule-Thomson effect is more effective than by using ordinary isentropic process, i.e. κT>TΓH at low temperatures. For dimerized spin-gapped magnets, where Bose–Einstein condensation of triplon gas may take place, the Joule-Thomson temperature corresponds to the maximal temperature of liquefaction of the triplon system, which is compared with recent experimental observations performed by Dresden group (Wang et al. (2016) [21]). The inversion temperature, where reverse of cooling and heating up regimes takes place, found to be finite for triplons, but infinite for magnons in a simple paramagnetic.en_US
dc.identifier.doi10.1016/j.physleta.2020.126313en_US
dc.identifier.issn0375-9601
dc.identifier.urihttp://hdl.handle.net/11693/75841
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttps://dx.doi.org/10.1016/j.physleta.2020.126313en_US
dc.source.titlePhysics Letters, Section A: General, Atomic and Solid State Physicsen_US
dc.subjectTriplonen_US
dc.subjectQuantum magnetsen_US
dc.subjectBECen_US
dc.subjectJoule-Thomson coefficienten_US
dc.titleJoule-Thomson temperature of a triplon system of dimerized quantum magnetsen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Joule_Thomson_temperature_of_a_triplon_system_of_dimerized_quantum_magnets.pdf
Size:
589.85 KB
Format:
Adobe Portable Document Format
Description:
View / Download
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Department of Physics