Emergence of Strong Exchange Interaction in the Actinide Series: The Driving Force for Magnetic Stabilization of Curium

Moore, K; der Laan, G v; Haire, D; Wall, M; Schwartz, A; Soderlind, P

doi:10.1103/PhysRevLett.98.236402

Title: Emergence of Strong Exchange Interaction in the Actinide Series: The Driving Force for Magnetic Stabilization of Curium

Journal Article · Thu Jan 04 00:00:00 EST 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.98.236402· OSTI ID:936991

Moore, K; der Laan, G v; Haire, D; Wall, M; Schwartz, A; Soderlind, P

Using electron energy-loss spectroscopy in a transmission electron microscope, many-electron atomic spectral calculations and density functional theory, we examine the electronic and magnetic structure of Cm metal. We show that angular momentum coupling in the 5f states plays a decisive role in the formation of the magnetic moment. The 5f states of Cm in intermediate coupling are strongly shifted towards the LS coupling limit due to exchange interaction, unlike most actinide elements where the effective spin-orbit interaction prevails. It is this LS-inclined intermediate coupling that is the key to producing the large spin polarization which in turn dictates the newly found crystal structure of Cm under pressure.

View Journal Article

Cite

Export

Save

Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: W-7405-ENG-48

OSTI ID:: 936991

Report Number(s):: UCRL-JRNL-227093; PRLTAO; TRN: US200821%%190

Journal Information:: Physical Review Letters, Vol. 98; ISSN 0031-9007

Country of Publication:: United States

Language:: English

References (24)

Branching ratio in x-ray absorption spectroscopy Thole, B. T.; van der Laan, G. Physical Review B, Vol. 38, Issue 5 https://doi.org/10.1103/PhysRevB.38.3158	journal	August 1988
Ambient pressure phase diagram of plutonium: A unified theory for α-Pu and δ-Pu Söderlind, P. Europhysics Letters (EPL), Vol. 55, Issue 4 https://doi.org/10.1209/epl/i2001-00447-3	journal	August 2001
Calculated Phonon Spectra of Plutonium at High Temperatures Dai, X. Science, Vol. 300, Issue 5621 https://doi.org/10.1126/science.1083428	journal	May 2003
Applicability of the Spin-Orbit Sum Rule for the Actinide $5 f$ States van der Laan, G.; Moore, K. T.; Tobin, J. G. Physical Review Letters, Vol. 93, Issue 9 https://doi.org/10.1103/PhysRevLett.93.097401	journal	August 2004
Fluctuating valence in a correlated solid and the anomalous properties of δ-plutonium Shim, J. H.; Haule, K.; Kotliar, G. Nature, Vol. 446, Issue 7135 https://doi.org/10.1038/nature05647	journal	March 2007
Crystal stability and equation of state for Am: Theory Söderlind, P.; Landa, A. Physical Review B, Vol. 72, Issue 2 https://doi.org/10.1103/PhysRevB.72.024109	journal	July 2005
Electron-energy-loss spectroscopy and X-ray absorption spectroscopy as complementary probes for complex f-electron metals: cerium and plutonium Moore, K. T.; Wall, M. A.; Schwartz, A. J. Philosophical Magazine, Vol. 84, Issue 10 https://doi.org/10.1080/14786430310001659534	journal	April 2004
A unified picture of the crystal structures of metals Söderlind, Per; Eriksson, Olle; Johansson, Börje Nature, Vol. 374, Issue 6522 https://doi.org/10.1038/374524a0	journal	April 1995
Failure of Russell-Saunders Coupling in the $5 f$ States of Plutonium Moore, K. T.; Wall, M. A.; Schwartz, A. J. Physical Review Letters, Vol. 90, Issue 19 https://doi.org/10.1103/PhysRevLett.90.196404	journal	May 2003
The magnetic susceptibility of 248Cm metal Huray, Paul G.; Nave, S. E.; Peterson, J. R. Physica B+C, Vol. 102, Issue 1-3 https://doi.org/10.1016/0378-4363(80)90160-6	journal	October 1980
Magnetic ground state properties of transition metals Andersen, O. K.; Madsen, J.; Poulsen, U. K. Physica B+C, Vol. 86-88 https://doi.org/10.1016/0378-4363(77)90303-5	journal	January 1977
Correlated electrons in δ-plutonium within a dynamical mean-field picture Savrasov, S. Y.; Kotliar, G.; Abrahams, E. Nature, Vol. 410, Issue 6830 https://doi.org/10.1038/35071035	journal	April 2001
PHYSICS: Sensing Electrons on the Edge Lander, G. H. Science, Vol. 301, Issue 5636 https://doi.org/10.1126/science.1088510	journal	August 2003
Phonon Dispersions of fcc -Plutonium-Gallium by Inelastic X-ray Scattering Wong, J. Science, Vol. 301, Issue 5636 https://doi.org/10.1126/science.1087179	journal	August 2003
Crystal structure and elastic-constant anomalies in the magnetic 3 d transition metals Söderlind, P.; Ahuja, R.; Eriksson, O. Physical Review B, Vol. 50, Issue 9 https://doi.org/10.1103/PhysRevB.50.5918	journal	September 1994
Magnetic properties of actinide elements having the $5 f^{6}$ and $5 f^{7}$ electronic configurations Nave, S. E.; Haire, R. G.; Huray, Paul G. Physical Review B, Vol. 28, Issue 5 https://doi.org/10.1103/PhysRevB.28.2317	journal	September 1983
Symmetry and Stability of $δ$ Plutonium: The Influence of Electronic Structure Moore, K. T.; Söderlind, P.; Schwartz, A. J. Physical Review Letters, Vol. 96, Issue 20 https://doi.org/10.1103/PhysRevLett.96.206402	journal	May 2006
Oxidation and aging in U and Pu probed by spin-orbit sum rule analysis: Indications for covalent metal-oxide bonds Moore, K. T.; van der Laan, G.; Haire, R. G. Physical Review B, Vol. 73, Issue 3 https://doi.org/10.1103/PhysRevB.73.033109	journal	January 2006
Photoelectron spectroscopy study of the $5 f$ localization in Pu Havela, L.; Gouder, T.; Wastin, F. Physical Review B, Vol. 65, Issue 23 https://doi.org/10.1103/PhysRevB.65.235118	journal	June 2002
Linear relation between x-ray absorption branching ratio and valence-band spin-orbit expectation value Thole, B. T.; van der Laan, G. Physical Review A, Vol. 38, Issue 4 https://doi.org/10.1103/PhysRevA.38.1943	journal	August 1988
Density-Functional Calculations of $α$ , $β$ , $γ$ , $δ$ , $δ^{'}$ , and $ϵ$ Plutonium Söderlind, Per; Sadigh, Babak Physical Review Letters, Vol. 92, Issue 18 https://doi.org/10.1103/PhysRevLett.92.185702	journal	May 2004
Plutonium-based superconductivity with a transition temperature above 18 K Sarrao, J. L.; Morales, L. A.; Thompson, J. D. Nature, Vol. 420, Issue 6913 https://doi.org/10.1038/nature01212	journal	November 2002
X-ray-absorption sum rules in $jj$ -coupled operators and ground-state moments of actinide ions van der Laan, Gerrit; Thole, B. T. Physical Review B, Vol. 53, Issue 21 https://doi.org/10.1103/PhysRevB.53.14458	journal	June 1996
A High-Pressure Structure in Curium Linked to Magnetism Heathman, S. Science, Vol. 309, Issue 5731 https://doi.org/10.1126/science.1112453	journal	July 2005

Similar Records

Spin-Orbit Coupling versus Exchange Interaction in Actinide Metals

Conference · Tue Jul 01 00:00:00 EDT 2008 · OSTI ID:936991

Van der Laan, Gerrit; Moore, Kevin Thomas

Rampant changes in 5f 5/2 and 5f 7/2 filling across the light and middle actinide metals

Journal Article · Tue Apr 03 00:00:00 EDT 2007 · Physical Review B, vol. 76, n/a, August 23, 2007, pp. 073105 · OSTI ID:936991

Moore, K; der Lann, G v; Wall, M; +2 more

Spin-orbit holds the heavyweight title for Pu and Am: Exchange regains it for Cm

Conference · Thu Jan 10 00:00:00 EST 2008 · OSTI ID:936991

Moore, K; der Laan, G v; Soderlind, P

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUMM MECHANICS
GENERAL PHYSICS
ACTINIDES
ANGULAR MOMENTUM
CRYSTAL STRUCTURE
CURIUM
ELECTRON MICROSCOPES
ELECTRONS
ENERGY-LOSS SPECTROSCOPY
EXCHANGE INTERACTIONS
FUNCTIONALS
INTERMEDIATE COUPLING
L-S COUPLING
MAGNETIC MOMENTS
POLARIZATION
SPIN
STABILIZATION

Title: Emergence of Strong Exchange Interaction in the Actinide Series: The Driving Force for Magnetic Stabilization of Curium

Citation Formats

References (24)

Similar Records

Related Subjects