Field dependent phase diagram of the quantum spin chain (CH 3)2NH2CuCl3

M. B. Stone; W. Tian; T. P. Murphy; S. E. Nagler; D. G. Mandrus

doi:10.1063/1.2355047

Field dependent phase diagram of the quantum spin chain (CH ₃)₂NH₂CuCl₃

M. B. Stone, W. Tian, T. P. Murphy, S. E. Nagler, D. G. Mandrus

Direct Geometry

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

Although (CH₃)₂NH₂CuCl₃ (MCCL) was first examined in the 1930's, there are open questions regarding the magnetic dimensionality and nature of the magnetic properties. MCCL is proposed to be a S=1/2 alternating ferromagnetic-antiferromagnetic spin chain alternating along the crystalline a-axis. Proposed ferromagnetic (J_FM =1.3 meV) and antiferromagnetic (J_AFM = 1.1 meV) exchange constants make this system particularly interesting for experimental study. Because J_FM and J_AFM are nearly identical, the system should show competing behavior between S=1/2 (AFM) and S=1(FM) effects. We report low temperature magnetic field dependent susceptibility, χ, and specific heat, C _p, of MCCL. These provide an initial magnetic-field versus temperature phase diagram. A zero-field phase transition consistent with long range magnetic order is observed at T=0.9 K. The transition temperature can be reduced via application of a magnetic field. We also present comparisons to a FM/AFM dimer model that accounts for χ(T,H=0) and C_p(H,T).

Original language	English
Title of host publication	LOW TEMPERATURE PHYSICS
Subtitle of host publication	24th International Conference on Low Temperature Physics - LT24
Pages	1015-1016
Number of pages	2
DOIs	https://doi.org/10.1063/1.2355047
State	Published - 2006
Event	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States Duration: Aug 10 2006 → Oct 17 2006

Publication series

Name	AIP Conference Proceedings
Volume	850
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Country/Territory	United States
City	Orlando, FL
Period	08/10/06 → 10/17/06

Funding

Funders	Funder number
Directorate for Mathematical and Physical Sciences	0084173

Keywords

Critical phenomena
Magnetic properties
Organometallic compounds
Phase transitions

Access to Document

10.1063/1.2355047

Cite this

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title = "Field dependent phase diagram of the quantum spin chain (CH 3)2NH2CuCl3",

abstract = "Although (CH3)2NH2CuCl3 (MCCL) was first examined in the 1930's, there are open questions regarding the magnetic dimensionality and nature of the magnetic properties. MCCL is proposed to be a S=1/2 alternating ferromagnetic-antiferromagnetic spin chain alternating along the crystalline a-axis. Proposed ferromagnetic (JFM =1.3 meV) and antiferromagnetic (JAFM = 1.1 meV) exchange constants make this system particularly interesting for experimental study. Because JFM and JAFM are nearly identical, the system should show competing behavior between S=1/2 (AFM) and S=1(FM) effects. We report low temperature magnetic field dependent susceptibility, χ, and specific heat, C p, of MCCL. These provide an initial magnetic-field versus temperature phase diagram. A zero-field phase transition consistent with long range magnetic order is observed at T=0.9 K. The transition temperature can be reduced via application of a magnetic field. We also present comparisons to a FM/AFM dimer model that accounts for χ(T,H=0) and Cp(H,T).",

keywords = "Critical phenomena, Magnetic properties, Organometallic compounds, Phase transitions",

author = "Stone, {M. B.} and W. Tian and Murphy, {T. P.} and Nagler, {S. E.} and Mandrus, {D. G.}",

year = "2006",

doi = "10.1063/1.2355047",

language = "English",

isbn = "0735403473",

series = "AIP Conference Proceedings",

pages = "1015--1016",

booktitle = "LOW TEMPERATURE PHYSICS",

note = "LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 ; Conference date: 10-08-2006 Through 17-10-2006",

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Stone, MB , Tian, W, Murphy, TP, Nagler, SE & Mandrus, DG 2006, Field dependent phase diagram of the quantum spin chain (CH ₃)₂NH₂CuCl₃. in LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. AIP Conference Proceedings, vol. 850, pp. 1015-1016, LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24, Orlando, FL, United States, 08/10/06. https://doi.org/10.1063/1.2355047

Field dependent phase diagram of the quantum spin chain (CH ₃)₂NH₂CuCl₃. / Stone, M. B.; Tian, W.; Murphy, T. P. et al.
LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. 2006. p. 1015-1016 (AIP Conference Proceedings; Vol. 850).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Field dependent phase diagram of the quantum spin chain (CH 3)2NH2CuCl3

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AU - Tian, W.

AU - Murphy, T. P.

AU - Nagler, S. E.

AU - Mandrus, D. G.

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N2 - Although (CH3)2NH2CuCl3 (MCCL) was first examined in the 1930's, there are open questions regarding the magnetic dimensionality and nature of the magnetic properties. MCCL is proposed to be a S=1/2 alternating ferromagnetic-antiferromagnetic spin chain alternating along the crystalline a-axis. Proposed ferromagnetic (JFM =1.3 meV) and antiferromagnetic (JAFM = 1.1 meV) exchange constants make this system particularly interesting for experimental study. Because JFM and JAFM are nearly identical, the system should show competing behavior between S=1/2 (AFM) and S=1(FM) effects. We report low temperature magnetic field dependent susceptibility, χ, and specific heat, C p, of MCCL. These provide an initial magnetic-field versus temperature phase diagram. A zero-field phase transition consistent with long range magnetic order is observed at T=0.9 K. The transition temperature can be reduced via application of a magnetic field. We also present comparisons to a FM/AFM dimer model that accounts for χ(T,H=0) and Cp(H,T).

AB - Although (CH3)2NH2CuCl3 (MCCL) was first examined in the 1930's, there are open questions regarding the magnetic dimensionality and nature of the magnetic properties. MCCL is proposed to be a S=1/2 alternating ferromagnetic-antiferromagnetic spin chain alternating along the crystalline a-axis. Proposed ferromagnetic (JFM =1.3 meV) and antiferromagnetic (JAFM = 1.1 meV) exchange constants make this system particularly interesting for experimental study. Because JFM and JAFM are nearly identical, the system should show competing behavior between S=1/2 (AFM) and S=1(FM) effects. We report low temperature magnetic field dependent susceptibility, χ, and specific heat, C p, of MCCL. These provide an initial magnetic-field versus temperature phase diagram. A zero-field phase transition consistent with long range magnetic order is observed at T=0.9 K. The transition temperature can be reduced via application of a magnetic field. We also present comparisons to a FM/AFM dimer model that accounts for χ(T,H=0) and Cp(H,T).

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