Thermodynamics of Rh nuclear spins calculated by exact diagonalization
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Thermodynamics of Rh nuclear spins calculated by exact diagonalization. / Lefmann, K.; Ipsen, J.; Rasmussen, F.B.; Rasmussen, Finn Berg.
In: Physica B: Condensed Matter, Vol. 284-288, No. PART II, 01.01.2000, p. 1702-1703.Research output: Contribution to journal › Journal article › Research
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TY - JOUR
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
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
SN - 0921-4526
IS - PART II
ER -
ID: 94533425