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A Rational Approach Towards Determination of Optical Ionicity and Non-covalent Interactions in Fullerene-Calix[4]arene Host-Guest Complexes. J SOLUTION CHEM 2012. [DOI: 10.1007/s10953-012-9794-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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2
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Halder A, Bhatt S, Nayak SK, Chattopadhyay S, Bhattacharya S. UV-Vis, fluorescence and NMR spectroscopic investigations on inclusion properties of a designed tetrahomocalix[8]arene with fullerenes C60 and C70 in solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 84:25-31. [PMID: 21964241 DOI: 10.1016/j.saa.2011.08.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2011] [Revised: 07/30/2011] [Accepted: 08/10/2011] [Indexed: 05/31/2023]
Abstract
The present article reports the spectroscopic investigations on non-covalent interaction of fullerenes C(60) and C(70) with a macrocyclic receptor molecule, namely, 1,3,5,7-tetrahomo-p-tert-butylcalix[8]arene (1) in toluene. Jobs method of continuous variation reveals 1:1 stoichiometry for the fullerene complexes of 1. The most fascinating feature of the present study is that 1 binds selectively C(60) compared to C(70) as obtained from binding constant (K) data of C(60)-1 (K(C60-1)) and C(70)-1 (K(C70-1)) complexes which are enumerated to be 265,000 dm(3) mol(-1) and 63,43 dm(3) mol(-1), respectively, and selectivity in binding (K(C60-1)/K(C70-1)) is estimated to be 4.18 as obtained from UV-Vis study. Steady state fluorescence studies reveal quenching of fluorescence of 1 in presence of fullerenes and the K value of the C(60)-1 and C(70)-1 complexes are estimated to be 80,760 and 68,780 dm(3) mol(-1), respectively, with selectivity in binding (K(C60-1)/K(C70-1)) ~1.18. (1)H NMR analysis provides very good support in favor of strong binding between C(60) and 1. The high value of K value for C(60)-1 complex indicates that 1 forms an inclusion complex with C(60).
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Affiliation(s)
- Amal Halder
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan, India
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Halder A, Nayak SK, Chattopadhyay S, Bhattacharya S. UV–Vis and NMR spectroscopic investigations on effective and selective non-covalent interactions between fullerenes and calix[6]arene. J Mol Liq 2010. [DOI: 10.1016/j.molliq.2009.12.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Chibotaru L. Spin–vibronic superexchange and dynamical vibronic order in ammoniated cubic fullerides. J Mol Struct 2007. [DOI: 10.1016/j.molstruc.2006.12.064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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5
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Takabayashi Y, Ganin AY, Rosseinsky MJ, Prassides K. Direct observation of magnetic ordering in the (CH3NH2)K3C60 fulleride. Chem Commun (Camb) 2006:870-2. [PMID: 17308659 DOI: 10.1039/b614596e] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The zero-field muon-spin-relaxation (ZF-micro(+)SR) technique provides direct observation of the development of antiferromagnetic long range order in the hyperexpanded methylaminated fulleride salt, (CH(3)NH(2))K(3)C(60) below T(N) approximately 10 K-coherent ordering of the electronic magnetic moments leads to a local field of approximately 25 G at the muon site at 1.2 K.
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Shiroka T, Fumera G, Ligabue O, Riccò M, Antonioli GC. Nuclear magnetic resonance structural investigations of ammonia-doped fullerides. J Chem Phys 2006; 124:204717. [PMID: 16774374 DOI: 10.1063/1.2198822] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The dynamic and structural properties of the ammonia-doped superconducting fulleride (NH3)xNaK2C60 (0.5< or =x< or =1), well known for its anomalous decrease of transition temperature with doping, have been investigated using sodium and deuterium solid-state NMR techniques. The independence of 23Na quadrupole splitting from the ammonia content x, which, at the same time, substantially affects Tc, suggests a marginal role of the cation position in the superconducting mechanism. On the other hand, a strong reduction of the deuterium quadrupole coupling with respect to the free ammonia value denotes the presence of weak hydrogen bonds between the deuterium atoms and fullerene pi orbitals. Despite the bond weakness, as evinced by the lively ammonia rotational dynamics even at very low temperatures, the resulting electron localization could explain the observed Tc anomaly. The motion of the ND3-Na group (located in the compound's octahedral voids), as well as the evolution of the ammonia dynamics as a function of temperature, were determined from deuterium NMR line shape analysis and from detailed numerical simulations. While at the lowest measured temperatures only the ammonia rotation around its own C3 axis takes place, above approximately 25 and 70 K, respectively, also the wobbling of the C3 axis and the ND3 relocation become active, successfully modeled by a strongly correlated motion involving two different time scales.
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Affiliation(s)
- T Shiroka
- Dipartimento di Fisica and CNISM, Università di Parma, Parco Area delle Scienze 7/a, 43100 Parma, Italy.
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Chibotaru LF. Spin-vibronic superexchange in Mott-Hubbard fullerides. PHYSICAL REVIEW LETTERS 2005; 94:186405. [PMID: 15904389 DOI: 10.1103/physrevlett.94.186405] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2004] [Indexed: 05/02/2023]
Abstract
In the Mott-Hubbard cubic fulleride Li3(NH3)6C60 the superexchange energy is found to be much smaller than the rotational quantum for Jahn-Teller deformations at fullerene sites. This gives rise to a new type of superexchange interaction involving threefold degenerate vibronic ground states of C3-60 ions. In contrast with spin-orbital models, the spin-vibronic superexchange can be only antiferromagnetic and shows a significant vibronic reduction of the superexchange amplitude, in agreement with magnetic susceptibility data. As a function of the transfer parameters, two quadrupolar fully dynamical vibronic orders with quenched vibronic moments on sites develop in the ground state.
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Affiliation(s)
- L F Chibotaru
- Department of Chemistry, University of Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
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Bhattacharya S, Nayak SK, Semwal A, Banerjee M. Energies of charge transfer and supramolecular interactions of some mono O-substituted calix[6]arenes with [60]fullerene by absorption spectrometric method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2005; 61:595-606. [PMID: 15649789 DOI: 10.1016/j.saa.2004.05.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2004] [Accepted: 05/13/2004] [Indexed: 05/24/2023]
Abstract
Equilibria for the formation of supramolecular complexes of [60]fullerene with a series of mono O-substituted calix[6]arenes, namely: (i) 37-methoxy-38,39,40,41,42-pentahydroxy-5,11,17,23,29,35-hexa(4-tert-butyl)calix[6]arene (1), (ii) 37-allyl-38,39,40,41,42-pentahydroxy-5,11,17,23,29,35-hexa(4-tert-butyl)calix[6]arene (2), (iii) 37-phenacyl-38,39,40,41,42-pentahydroxy-5,11,17,23,29,35-hexa(4-tert-butyl)calix[6]arene (3), (iv) 37-ethylester-38,39,40,41,42-pentahydroxy-5,11,17,23,29,35-hexa(4-tert-butyl)calix[6]arene (4) and (v) 37-benzyl-38,39,40,41,42-pentahydroxy-5,11,17,23,29,35-hexa(4-tert-butyl)calix[6]arene (5) have been studied in CCl4 medium by absorption spectroscopic technique. The stoichiometry has been found to be 1:1 ([60]fullerene:calix[6]arene) in each case. An absorption band due to charge transfer (CT) transition is observed in each case in the visible region. The vertical ionisation potentials (I(D)(v)) of all the calix[6]arenes under study have been estimated utilising CT transition energy. The experimental I(D)(v) values also yield a good estimate of the electron affinity of [60]fullerene. The degrees of CT in the ground state of the complexes have been found to be very low (about 0.15%). Resonance energy of the complexes have been estimated. Thermodynamic parameters for the supramolecular complex formation of [60]fullerene with mono O-substituted calix[6]arene receptors are reported. It is observed that among the calix[6]arenes under the present study, only 1 and 4 form inclusion complexes with [60]fullerene. This has also been substantiated by theoretical calculation using PM3 method. Thus presence of one substituent group (of different types) on the lower rim of the calix[6]arene molecule has been shown to govern the host-guest complexation process.
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Affiliation(s)
- Sumanta Bhattacharya
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan 713104, India.
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Bhattacharya S, Nayak SK, Semwal A, Chattopadhyay S, Banerjee M. Study of Host−Guest Interaction of [70]Fullerene with Substituted Calix[6]arenes by Absorption Spectrometric Method. J Phys Chem A 2004. [DOI: 10.1021/jp0481106] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sumanta Bhattacharya
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan - 713 104, India, and Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085, India
| | - Sandip K. Nayak
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan - 713 104, India, and Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085, India
| | - Abha Semwal
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan - 713 104, India, and Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085, India
| | - Subrata Chattopadhyay
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan - 713 104, India, and Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085, India
| | - Manas Banerjee
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan - 713 104, India, and Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085, India
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Coulon C, Clérac R. Electron Spin Resonance: A Major Probe for Molecular Conductors. Chem Rev 2004; 104:5655-88. [PMID: 15535664 DOI: 10.1021/cr030639w] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Claude Coulon
- Centre de Recherche Paul Pascal, CNRS UPR 8641, Université Bordeaux 1, 115 Avenue Dr. A. Schweitzer, 33600 Pessac, France.
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Bhattacharya S, Banerjee S, Nayak SK, Chattopadhyay S, Mukherjee AK. NMR spectrometric study of molecular complex formation of [60]- and [70]fullerenes with a number of phosphine oxides. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2004; 60:1099-1104. [PMID: 15084329 DOI: 10.1016/s1386-1425(03)00343-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2003] [Revised: 07/11/2003] [Accepted: 07/30/2003] [Indexed: 05/24/2023]
Abstract
Molecular complex formation between [60]- and [70]fullerenes with a series of phosphine oxides, namely, tri-n-octyl phosphine oxide, triphenyl phosphine oxide and tri-n-butyl phosphine oxide has been studied in CCl4 medium by NMR spectrometric method. Both [60]- and [70]fullerenes have been shown to form 1:1 adducts with the above series of phosphine oxides. Formation constants (K) for all the complexes have been determined from the systematic variation of NMR chemical shifts of specific protons of the donors in presence of [60]- and [70]fullerenes. Trends in the values of K suggest that [70]fullerene binds stronger with the phosphine oxides relative to [60]fullerene.
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Margadonna S, Aslanis E, Prassides K. Ammoniated alkali fullerides (ND(3))(x)NaA(2)C(60): ammonia specific effects and superconductivity. J Am Chem Soc 2002; 124:10146-56. [PMID: 12188679 DOI: 10.1021/ja026775k] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The crystal structure of the superconducting (ND(3))(x)()NaA(2)C(60) (0.7 < or = x < or = 1, A= K, Rb) fullerides (T(c)= 6-15 K) has been studied by synchrotron X-ray and neutron powder diffraction. It is face-centered cubic (fcc) to low temperatures with Na(+)-ND(3) pairs residing in the octahedral interstices. These are disordered over the corners of two "interpenetrating" cubes with the Na(+) ions and the N atoms displaced by approximately 2.0 A and approximately 0.5 A from the center of the site and statically disordered over the corners of the inner and outer cube, respectively. Close contacts between the D atoms of the ND(3) molecules and electron rich 6:6 C-C bonds of neighboring C(60) units provide the signature of weak N-D.pi hydrogen-bonding interactions, which control the intermolecular packing in the crystal and may determine the unusual superconducting properties.
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Kitano H, Matsuo R, Miwa K, Maeda A, Takenobu T, Iwasa Y, Mitani T. Evidence for insulating behavior in the electric conduction of (NH(3))K(3)C(60) systems. PHYSICAL REVIEW LETTERS 2002; 88:096401. [PMID: 11864035 DOI: 10.1103/physrevlett.88.096401] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2001] [Indexed: 05/23/2023]
Abstract
Microwave study using the cavity perturbation technique revealed that the conductivity of the antiferromagnet (NH(3))K(3-x)Rb(x)C(60) at 200 K is already 3-4 orders of magnitude smaller than those of superconductors, K(3)C(60) and (NH(3))(x)NaRb(2)C(60), and that the antiferromagnetic compounds are insulators below 250 K without metal-insulator transitions. The striking difference in the magnitude of the conductivity between these materials strongly suggests that the Mott-Hubbard transition in the ammoniated alkali fullerides is driven by a reduction of lattice symmetry from face-centered-cubic to face-centered-orthorhombic, rather than by the magnetic ordering.
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Affiliation(s)
- H Kitano
- Department of Basic Science, The University of Tokyo, Meguro-ku, Tokyo 153-8902, Japan
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14
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Dahlke P, Denning MS, Henry PF, Rosseinsky MJ. Superconductivity in Expanded fcc C603- Fullerides. J Am Chem Soc 2000. [DOI: 10.1021/ja002861d] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Patrik Dahlke
- Contribution from the Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Mark S. Denning
- Contribution from the Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Paul F. Henry
- Contribution from the Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Matthew J. Rosseinsky
- Contribution from the Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
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Takenobu T, Muro T, Iwasa Y, Mitani T. Antiferromagnetism and phase diagram in ammoniated alkali fulleride salts. PHYSICAL REVIEW LETTERS 2000; 85:381-384. [PMID: 10991288 DOI: 10.1103/physrevlett.85.381] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/1999] [Revised: 03/15/2000] [Indexed: 05/23/2023]
Abstract
Intercalation of neutral ammonia molecules into trivalent face-centered-cubic (fcc) fulleride superconductors induces a dramatic change in electronic states. Monoammoniated alkali fulleride salts (NH3)K3-xRbxC60, forming an isostructural orthorhombic series, undergo an antiferromagnetic transition, which was found by the electron spin resonance experiment. The Neel temperature first increases with the interfullerene spacing and then decreases for (NH3)Rb3C60, forming a maximum at 76 K. This feature is explained by the generalized phase diagram of Mott-Hubbard transition with an antiferromagnetic ground state.
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Affiliation(s)
- T Takenobu
- Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan
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Ar&cbreve;on D, Prassides K, Maniero AL, Brunel LC. Low temperature magnetic instabilities in triply charged fulleride polymers. PHYSICAL REVIEW LETTERS 2000; 84:562-565. [PMID: 11015964 DOI: 10.1103/physrevlett.84.562] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/1999] [Indexed: 05/23/2023]
Abstract
The electronic properties of the C3-60 polymer in Na2Rb0.3Cs0.7C60 were studied by X-band and high field (109.056 GHz) ESR. They are characteristic of a strongly correlated quasi-one-dimensional metal down to 45 K. On further cooling, a pseudogap of magnetic origin opens at the Fermi level below 45 K with three-dimensional magnetic ordering occurring below T(N) approximately 15 K, as confirmed by the observation of an antiferromagnetic resonance mode. The Na2Rb1-xCsxC60 family of polymers offers a unique way to chemically control the electronic properties, as the opening of the gap in this system of predominantly itinerant electrons is an extremely sensitive function of the interchain separation.
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Affiliation(s)
- D Ar&cbreve;on
- Fullerene Science Centre, School of Chemistry, Physics and Environmental Sciences, University of Sussex, Brighton, BN1 9QJ, United Kingdom
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Prassides K, Margadonna S, Arcon D, Lappas A, Shimoda H, Iwasa Y. Magnetic Ordering in the Ammoniated Fulleride (ND3)K3C60. J Am Chem Soc 1999. [DOI: 10.1021/ja992931k] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kosmas Prassides
- School of Chemistry, Physics and Environmental Science University of Sussex, Brighton BN1 9QJ, U.K. Japan Advanced Institute of Science and Technology Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Serena Margadonna
- School of Chemistry, Physics and Environmental Science University of Sussex, Brighton BN1 9QJ, U.K. Japan Advanced Institute of Science and Technology Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Denis Arcon
- School of Chemistry, Physics and Environmental Science University of Sussex, Brighton BN1 9QJ, U.K. Japan Advanced Institute of Science and Technology Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Alexandros Lappas
- School of Chemistry, Physics and Environmental Science University of Sussex, Brighton BN1 9QJ, U.K. Japan Advanced Institute of Science and Technology Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Hideo Shimoda
- School of Chemistry, Physics and Environmental Science University of Sussex, Brighton BN1 9QJ, U.K. Japan Advanced Institute of Science and Technology Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Yoshihiro Iwasa
- School of Chemistry, Physics and Environmental Science University of Sussex, Brighton BN1 9QJ, U.K. Japan Advanced Institute of Science and Technology Tatsunokuchi, Ishikawa 923-1292, Japan
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Iwasa Y, Shimoda H, Takenobu T, Honjo S, Mitani T, Tou H, Maniwa Y, Brown CM, Prassides K. Current Issues of Intercalation and Superconductivity in Solid State Fullerenes. ACTA ACUST UNITED AC 1999. [DOI: 10.1080/10641229909351363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Allen KM, Dennis TJS, Rosseinsky MJ, Shinohara H. Isomer Specific Intercalation Chemistry: Potassium Insertion into the D2 and D2d Isomers of C84. J Am Chem Soc 1998. [DOI: 10.1021/ja980616c] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K. M. Allen
- Contribution from the Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K., and Department of Chemistry, Nagoya University, Nagoya 464-8602, Japan
| | - T. J. S. Dennis
- Contribution from the Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K., and Department of Chemistry, Nagoya University, Nagoya 464-8602, Japan
| | - M. J. Rosseinsky
- Contribution from the Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K., and Department of Chemistry, Nagoya University, Nagoya 464-8602, Japan
| | - H. Shinohara
- Contribution from the Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, U.K., and Department of Chemistry, Nagoya University, Nagoya 464-8602, Japan
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Shimoda H, Iwasa Y, Miyamoto Y, Maniwa Y, Mitani T. Superconductivity of fcc fullerides containing off-centered octahedral cations. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R15653-R15656. [PMID: 9985725 DOI: 10.1103/physrevb.54.r15653] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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21
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Maniwa Y, Sugiura D, Kume K, Kikuchi K, Suzuki S, Achiba Y, Hirosawa I, Tanigaki K, Shimoda H, Iwasa Y. Determination of 13C NMR isotropic Knight shift and deviation from BCS relation in A3C60 superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R6861-R6864. [PMID: 9984399 DOI: 10.1103/physrevb.54.r6861] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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