English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Specific heat of segmented Heisenberg quantum spin chains in (Yb1-xLux)4As3

Matysiak, R., Gegenwart, P., Ochiai, A., Antkowiak, M., Kamieniarz, G., & Steglich, F. (2013). Specific heat of segmented Heisenberg quantum spin chains in (Yb1-xLux)4As3. Physical Review B, 88(22): 224414, pp. 1-6. doi:10.1103/PhysRevB.88.224414.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0017-C140-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0000-1A59-0
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Matysiak, R.1, Author
Gegenwart, P.2, Author              
Ochiai, A.1, Author
Antkowiak, M.1, Author
Kamieniarz, G.1, Author
Steglich, F.3, Author              
Affiliations:
1external, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467              

Content

show
hide
Free keywords: -
 Abstract: We report low-temperature specific heat, C(T), measurements on (Yb1-xLux)(4)As-3, with x = 0.01 and x = 0.03, where nonmagnetic Lu atoms are randomly distributed on antiferromagnetic S = 1/2 Heisenberg chains with J/k(B) = 28 K. The observed reduction of C below 15 K with increasing x is accurately described by quantum transfer matrix simulations without any adjustable parameter, implying that the system is an excellent experimental realization of segmented quantum spin chains. Finite-size effects consistent with conformal-field theory predictions are leading to the formation of an effective low-energy gap. The size of the gap increases with Lu content and accounts for the impurity-driven reduction of the specific heat. For both concentrations our results verify experimentally the low-temperature scaling behavior established theoretically and also confirm the value of J determined from pure Yb4As3.

Details

show
hide
Language(s):
 Dates: 2013-12-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Physical Review B
  Other : Phys. Rev. B
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 88 (22) Sequence Number: 224414 Start / End Page: 1 - 6 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008