Thermodynamics of Rh nuclear spins calculated by exact diagonalization

K. Lefmann; J. Ipsen; F.B. Rasmussen; Finn Berg Rasmussen

Thermodynamics of Rh nuclear spins calculated by exact diagonalization

K. Lefmann, J. Ipsen, F.B. Rasmussen, Finn Berg Rasmussen

1 Citation (Scopus)

Abstract

We have employed the method of exact diagonalization to obtain the full-energy spectrum of a cluster of 16 Rh nuclear spins, having dipolar and RK interactions between first and second nearest neighbours only. We have used this to calculate the nuclear spin entropy, and our results at both positive and negative temperatures follow the second-order high-temperature series expansions for |T| > 3 nK. Our findings do not agree with the measurements of the former Rh experiment in Helsinki, where a deviation is seen at much higher temperatures.

Original language	English
Journal	Physica B: Condensed Matter
Volume	284-288
Issue number	PART II
Pages (from-to)	1702-1703
Number of pages	2
ISSN	0921-4526
Publication status	Published - 1 Jan 2000

Keywords

Faculty of Science

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title = "Thermodynamics of Rh nuclear spins calculated by exact diagonalization",

abstract = "We have employed the method of exact diagonalization to obtain the full-energy spectrum of a cluster of 16 Rh nuclear spins, having dipolar and RK interactions between first and second nearest neighbours only. We have used this to calculate the nuclear spin entropy, and our results at both positive and negative temperatures follow the second-order high-temperature series expansions for |T| > 3 nK. Our findings do not agree with the measurements of the former Rh experiment in Helsinki, where a deviation is seen at much higher temperatures.",

keywords = "Faculty of Science, magnetism",

author = "K. Lefmann and J. Ipsen and F.B. Rasmussen and Rasmussen, {Finn Berg}",

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T1 - Thermodynamics of Rh nuclear spins calculated by exact diagonalization

AU - Lefmann, K.

AU - Ipsen, J.

AU - Rasmussen, F.B.

AU - Rasmussen, Finn Berg

PY - 2000/1/1

Y1 - 2000/1/1

N2 - We have employed the method of exact diagonalization to obtain the full-energy spectrum of a cluster of 16 Rh nuclear spins, having dipolar and RK interactions between first and second nearest neighbours only. We have used this to calculate the nuclear spin entropy, and our results at both positive and negative temperatures follow the second-order high-temperature series expansions for |T| > 3 nK. Our findings do not agree with the measurements of the former Rh experiment in Helsinki, where a deviation is seen at much higher temperatures.

AB - We have employed the method of exact diagonalization to obtain the full-energy spectrum of a cluster of 16 Rh nuclear spins, having dipolar and RK interactions between first and second nearest neighbours only. We have used this to calculate the nuclear spin entropy, and our results at both positive and negative temperatures follow the second-order high-temperature series expansions for |T| > 3 nK. Our findings do not agree with the measurements of the former Rh experiment in Helsinki, where a deviation is seen at much higher temperatures.

KW - Faculty of Science

KW - magnetism

UR - http://www.scopus.com/inward/record.url?scp=0033689880&partnerID=8YFLogxK

M3 - Journal article

AN - SCOPUS:0033689880

SN - 0921-4526

VL - 284-288

SP - 1702

EP - 1703

JO - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics

JF - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics

IS - PART II

ER -

Thermodynamics of Rh nuclear spins calculated by exact diagonalization

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