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Article
Fermi surface in the new organic quasi-two-dimensional metal α-(BETS)2TlHg(SeCN)4
Quantum oscillations of de Haas-van Alphen and Shubnikov-de Haas and semiclassical angular oscillations of the magnetoresistance have been observed in the quasi-two-dimensional organic metal α-(BETS)2TlHg(SeCN)4....
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Article
Low Temperature Specific Heat of the Kondo-Semimetal CeNiSn in Zero and Applied Magnetic Fields
The specific heat of several CeNiSn single crystals of various purity has been measured in the temperature range from 25 mK to 5 K and in magnetic fields from zero to 7 Tesla. At very low temperatures (below ∼.....
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Article
de Haas-van Alphen oscillations and angular magnetoresistance oscillations in the organic metal κ-(BETS)2GaCl4
Quantum de Haas-van Alphen oscillations and semiclassical angular magnetoresistance oscillations are observed in the quasi-two-dimensional organic metal κ-(BETS)2GaCl4. The behavior of these oscillations attests ...
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Article
Quantum and semiclassical oscillations in the organic metal (BEDO-TTF)2Clx(H2O)y
We study quantum (Shubnikov-de Haas and de Haas-van Alphen) oscillations and angular oscillations of the reluctance in the organic quasi-two-dimensional metal (BO)2Clx(H2O)y. We show that the Fermi surface in thi...
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Article
Volume-Based Considerations for the Metal-Insulator Transition of CMR Oxides
The sensitivity of ρ to changes in volume which occur through: (1) applied pressure, (2) variations in temperature, and (3) phase transitions, is evaluated for some selected CMR oxides. It is argued that the c...
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Article
Galvanomagnetic properties of the new organic metal ET2TlHg(S0.45Se0.55CN)4
Magnetoresistance and magnetic torque have been studied in the single crystals of the mixed complex (ET)2TlHg(S0.45Se0.55CN)4. The quantum oscillations (Shubnikov-de Haas and de Haas-van Alphen) have been observe...
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Article
The influence of impurities and alloying in the Kondo semimetal CeNiSn as seen by μSR
The temperature dependence of the muon spin relaxation rate \lambda was measured in two samples of CeNiSn with markedly different impurity content and in the quasi‐ternary compounds CePtxNi1-xSn (x=0.12,\ ,0.2) a...
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Article
Spin fluctuations and magnetic order in the heavy fermion compound CePt2Sn2
We present zero and longitudinal field μ SR measurements of single crystal and polycrystalline specimens of the heavy fermion compound CePt2Sn2. Above 1 K the behaviour of the two samples is indistinguishable; th...
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Chapter and Conference Paper
Bewältigungsorientierte Therapie bei psychisch Erkrankten
In den letzten 15 Jahren sind neben Therapien zur Verbesserung kognitiver und sozialer Funktionen insbesondere psychoedukative Ansätze in Kombination mit Psychopharmakatherapie stärker in den Mittelpunkt der B...
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Article
Specific heat and magnetic susceptibility of UPt3 and UBe13 at mK-temperatures
We have measured the specific heat capacity of a single crystal of UPt3 in zero magnetic field, in 2 T, and in 4 T (above $$B_{C_2 } $...
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Article
Competition between superconductivity and insulating magnetic state in κ-(BEDT-TTF)2Cu[N(CN)2]Cl: Effects of pressure, magnetic field, and partial anion substitution
Systematic experimental study of the electrical transport and static magnetization reveals a direct and delicate interplay between magnetism and superconductivity in the organic materialκ-(BEDT-TTF)2Cu[N(CN)2]Cl,...
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Chapter and Conference Paper
Raman Study of the Order Parameter in Oxide Superconductors
We present Raman scattering results obtained from high quality single crystals of Bi2Sr2CaCu208+δ (Bi 2212) and YBa2Cu3O7−δ (Y 123). The symmetry selection rules for the electronic scattering suggest the observed...
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Article
London field penetration in heavy fermion superconductors
We present results of a series of high resolution, low fielddc-magnetization measurements on the heavy fermion superconductors UPt3, UBe13, U1−x Th X Be13 and CeCu2Si2, from whic...
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Chapter
Josephson Effects in Point Contacts and Bridges Made of YBa2Cu3O7
We report on investigations of the Josephson characteristics of thin bridges of sintered YBa2Cu3O7 both by four lead techniques as well as by observing the flux quantization properties in ring structures containi...
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Chapter
Radical Cation Salts of BEDT-TTF with Metal-Thiocyanato Anions
The synthesis, characterization and physical properties of two superconducting types of (ET)9Cu(NCS)2 and of the semiconductor (ET)Agx (SCN)2 (x ≃ 1,5) are reported. Conductivity measurements at ambient and appli...
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Chapter
Magnetotransport in (BEDT-TTF)2 Cu(NCS)2: Shubnikov-de Haas Effect and Upper Critical Field
The transverse magnetoresistance of (BEDT-TTF)2Cu(NCS)2 was measured at temperatures down to 0.3K and in magnetic fields up to 24T. Shubnikov-de Haas oscillations with a single frequency of 597±7 T were found con...
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Article
Anomalous temperature dependence of the magnetic field penetration depth in superconducting UBe13
We report the first measurements of the magnetic-field penetration depth λ in the heavy electron superconductor UBe13, performed using a SQUID magnetometer. We find the temperature dependence of λ(T)-λ(0) to foll...
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Chapter and Conference Paper
Efforts at Compensation with Regard to Basic Disorders Among Schizophrenics
A few years ago Zubin and Spring [10], in their well known synopsis of the models of illness derived from 80 years of research into schizophrenia, showed that these models, in their totality, correspond to a c...
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Article
The organic superconductor (TMTSF)2ClO4: The effect of magnetic fields and anion orientational disorder
The upper critical fieldH c2 and the low field magnetoresistance of the organic super-conductor (TMTSF)2ClO4 are studied as a function of temperature, sample orientation and the degree of frozen anion disorder.H
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Chapter
A Novel Low Temperature Phase Transition in Mixed Valent Sm4Bi3
Evidence for the mixed valent character of Sm4Bi3 (body centered cubic, anti-Th3P4 structure) has so far mostly come from lattice parameter measurements in the series of R4Bi3compounds (R = rare earth).1 One find...
