Semiconducting Properties of Natural Pyrite Crystals
スポンサーリンク
概要
- 論文の詳細を見る
The resistivity ρ and the Hall coefficient R_H of n-type natural pyrite crystals have been measured at temperatures from 〜1.3°K to 〜754°K. These crystals have the carrier concentration (N_D-N_A) from 1×10^<16> to 3×10^<18> (cm^<-3>) and the resistivity from 13 to 0.017 (Ω・cm) at room temperature. The intrinsic energy gap ε_G is estimated to be 〜0.73 eV from ρ-1/T plots at 〜650±65°K and 〜0.77 eV from R_H-1/T plots around 550°K. The donor activation energy ε_1 is estimated to be 〜6 meV or lower for several crystals. The activation energy ε_3 (〓10^<-2>〜10^<-3> meV) estimated from the measurement below 〜10°K suggests a presence of the impurity band conduction. These energies ε_1 or ε_3 (ε_2(ε_1>ε_2>ε_3) is neglected here), which are arranged in order of the magnitude of N_D-N_A, suggest that these impurity levels belong to a same group. One activation energy level, however, deviates from this order. This result suggests that this impurity level belongs to another one. The Hall mobility of most crystals near the exhaustion region changes with temperature according to the formula for the acoustic phonon scattering. The maximum in the temperature dependence of the Hall coefficient is observed near 30°K for several crystals, but not for the degenerate one. The transverse magnetoresistance has been measured as functions of magnetic field and crystallographic direction. Negative magnetoresistances observed at 4.2°K show saturation characteristics with increase in the applied field. These saturation values are arranged in order of carrier concentration and a maximum in this manner is expected at a concentration higher than that of n-type germanium. A crystallographic anisotropy of the transverse magnetoresistance has been observed. The result suggests that a constant energy surface of pyrite may be either of the warped sphere or of the <100>-valley type. An effective mass is tentatively estimated to be 0.2 from ε_1=6 meV and the dielectric constant κ=2.4 (obtained by Gillson). Some characteristics of the d-band model for pyrite are briefly examined from impurity concentration dependences of the observed physical properties.
- 東北大学の論文
著者
-
Horita Hiromitsu
The Research Institute of Mineral Dressing and Metallurgy
-
Suzuki Takashi
Department Of Biochemistry University Of Shizuoka School Of Pharmaceutical Sciences:core Research Fo
-
Suzuki Takashi
Department Of Anesthesia Showa University Northern Yokohama Hospital
-
Suzuki Takashi
Department Of Physics Faculty Of Science
-
Suzuki Takashi
Department Of Anatomic Pathology Tohoku University School Of Medicine
関連論文
- Distribution of Influenza Virus Sialoreceptors on Upper and Lower Respiratory Tract in Horses and Dogs
- Identification and Characterization of Carbohydrate Molecules in Mammalian Cells Recognized by Dengue Virus Type 2
- A Unique Phosphatidylinositol Bearing a Novel Branched-Chain Fatty Acid from Rhodococcus equi Binds to Influenza Virus Hemagglutinin and Inhibits the Infection of Cells
- lnhibitory action of sulfatide a putative ligand for L-selectiv on B cell proliferation and lg prodrction
- Thermodynamic and Transport Properties of CeMg_2Cu_9 under Pressure(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- The odontoblast as a sensory receptor cell? The expression of TRPV1 (VR-1) channels
- Sex steroid receptors expression and hormone-induced cell proliferation in human osteosarcoma
- INTRADUCTAL ULTRASONOGRAPHY BEFORE BILIARY DRAINAGE AND TRANSPAPILLARY BIOPSY IN ASSESSMENT OF THE LONGITUDINAL EXTENT OF BILE DUCT CANCER
- Amylase levels in bile in patients with a morphologically normal pancreaticobiliary ductal arrangement
- Clinicopathological study on the intraductal spread of small pancreatic cancer
- DIAGNOSIS OF GASTRIC MUCINOUS CARCINOMA BY ENDOSCOPIC ULTRASONOGRAPHY
- HANDMADE OUTER FLUSHING CHANNEL FOR SAFE ENDOSCOPIC SUBMUCOSAL DISSECTION
- Superconductivity in Th_3Ni_3Sn_4
- Temperature Dependence of the Yb 4f Spectra in Yb_4Bi_3 Probed by Photoemission Spectroscopy
- XPS and X-BIS Studies of Gd Monopnictides
- Recognition of N-Glycolylneuraminic Acid Linked to Galactose by the α2,3 Linkage Is Associated with Intestinal Replication of Influenza A Virus in Ducks
- Correlation between superconductivity and in-plane resistivity in La_Sr_xCuO_4(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Unconventional Strain Dependence of Superconductivity in Spin-Triplet Superconductor Sr_2RuO_4
- In Vitro Inhibition of Human Influenza A Virus Infection by Fruit-Juice Concentrate of Japanese Plum (Prunus mume SIEB. et ZUCC)(Microbiology)
- Clarithromycin Inhibits Progeny Virus Production from Human Influenza Virus-Infected Host Cells(Microbiology)
- Suppression of the Biosynthesis of Cellular Sphingolipids Results in the Inhibition of the Maturation of Influenza Virus Particles in MDCK Cells(Highlighted paper selected by Editor-in-chief,Biochemistry)
- In Vitro and in Vivo Inhibitory Effects of Disodium Cromoglycate on Influenza Virus Infection(Pharmacology)
- Duck and Human Pandemic Influenza A Viruses Retain Sialidase Activity under Low pH Conditions^1
- Ganglioside GM_ on the Cell Surface Is Involved in the Infection by Human Rotavirus KUN and MO Strains
- Structural Transitions and Localization in La_Nd_ySr_xCuO_4 With p〜1/8
- Different Electronic Ground States in the Hexagonal and Cubic Phases of UAu_2Sn
- The Origin of Magnetic Field Dependence of Specific Heat in Single-Crystalline CeNiSn
- Huge Lattice Softening in CeRu_2 without Structural Transition
- Neutron Diffraction Study of the Magnetic Ordering of Low Carrier Kondo Lattice System CeAs under High Pressure
- High Pressure Studies on Electrical and Magnetic Properties of Ce-monopnictides, and Some Other Ce and U Compounds : Chapter 6. Magnetic Properties : 6-1. Measurements under Extreme Conditions
- Pressure-Induced Electronic Phase Transition in CeP
- High Resolution 4d-4f Resonance Photoemission Spectroscopy of CePdX (X=As,Sb)
- Temperature-Dependent Change of Correlated Electronic States in Yb_4As_3 and Yb_4(As_Sb_x)_3 Probed by High Resolution Photoemission Spectroscopy
- Crystal-field *_8-like State in Magnetically Ordered Phases of CeP : Its Anisotropy and Influence on Electronic Structure via High-Field Magnetotransport Measurements
- Core Photoemission Spectra of U_3P_4 and U_3As_4 Single Crystals
- Elastic, Thermal, Magnetic and Transport Properties of Kondo Compounds CeRhIn and CeRhSn(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Immunohistochemistry of a Proliferation Marker Ki67/MIB1 in Adrenocortical Carcinomas : Ki67/MIB1 Labeling Index Is a Predictor for Recurrence of Adrenocortical Carcinomas
- Optical Study on Heavy Fermion and Mixed Valence in Yb_4As_3
- Magnetic Polaron of Gd_2S_3 Studied by Infrared Spectroscopy under Magnetic Field
- Optical Study of Electronic Structure and Nonmetal-Metal Transition of Gd_2S_3
- Survivin as a Prognostic Factor for Osteosarcoma Patients
- de Haas-van Alphen Effect and Fermi Surface of USb
- Low Energy Excitations in the Low-Carrier Heavy-Electron System Yb_4As_3
- Divalent State in YbGaGe : Magnetic, Thermal, Transport and Structural Studies(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Divalent State in YbGaGe : Magnetic, Thermal, Transport and Structural Studies
- Dielectric Dispersion of Valence Fluctuation Compound Sm_3Se_4
- Low Temperature Properties of the Magnetic Semiconductor TmTe
- Thermoosmosis Across Hydrophobic and Hydrophilic Polymer Membranes
- Thermoosmosis and Transported Entropy of Water across Hydrocarbonsulfonic Acid-Type Cation-Exchange Membranes
- A Case of Aldosterone-Producing Adrenocortical Adenoma Associated with a Probable Post-Operative Adrenal Crisis : Histopathological Analyses of the Adrenal Gland
- Proteomic Analysis of Apoptosis Induced by Xanthoangelol, a Major Constituent of Angelica keiskei, in Neuroblastoma(Pharmacology)
- A Novel Cyclophane Compound, CPPy, Facilitates NGF-Induced TrkA Signal Transduction and Induces Cell Differentiation in Neuroblastoma(Molecular and Cell Biology)
- Cancer Chemopreventive Effects and Cytotoxic Activities of the Triterpene Acids from the Resin of Boswellia carteri(Pharmacognosy)
- Xanthoangelol, a Major Chalcone Constituent of Angelica keiskei, Induces Apoptosis in Neuroblastoma and Leukemia Cells(Pharmacology)
- Retinoic Acid Receptor and Retinoid X Receptor in Ductal Carcinoma in situ and Intraductal Proliferative Lesions of the Human Breast
- PE-312 Endothelial Cell-derived Endothelin-1 Regulates Proteinuria and Glomerular Barrier Function in Diabetic Mice(PE053,Peripheral Circulation/Vascular Disease (Therapy), Kidney/Renal Circulation/CKD (H),Poster Session (English),The 73rd Annual Scientif
- 1 Endothelial Cell-derived Endothelin-1 Promotes Cardiac Fibrosis in Diabetic Heart through Stimulation of Endothelial to Mesenchymal Transition(Young Investigator's Award for International Students Finalists Lecture (YIA International),The 73rd Annual Sc
- OE-223 Genetic Inactivation of Vascular Endothelial Cell Endothelin-1 in Mice is Protective against Diabetic-Induced Renal Injury(Kidney/Renal circulation(01)(H),Oral Presentation(English),The 72nd Annual Scientific Meeting of the Japanese Circulation Soc
- OE-139 Preservation of Cardiac Function in Diabetic Mice with Specific Knockout of Endothelin-1 in Vascular Endothelial Cell(Cardiac function, basic/clinical(01)(M),Oral Presentation(English),The 72nd Annual Scientific Meeting of the Japanese Circulation
- P-564 MULTI-DIMENSIONAL HPLC MAPPING METHOD FOR STRUCTURAL ANALYSES OF N-GLYCANS AND ITS APPLICATIONS TO N-GLYCOSYLATION PROFILING OF ORGANISMS AND TISSUES
- XPS and UPS Studies of Valence Fluctuation and Surface States of Yb_4As_3,Yb_4Sb_3 and Yb_4Bi_3
- Oscillatory High-Field Magnetization in LaP Doped with Ce
- Androgens in human breast carcinoma
- Chicken ovalbumin upstream promoter transcription factor II in human breast carcinoma : Possible regulator of lymphangiogenesis via vascular endothelial growth factor-C expression
- Intratumoral estrogen production in breast carcinoma : significance of aromatase
- Aromatase in Human Breast Carcinoma as a Key Regulator of Intratumoral Sex Steroid Concentrations
- Human liver-specific organic anion transporter-2 is a potent prognostic factor for human breast carcinoma
- In situ production of sex steroids in human breast carcinoma
- Ductal Carcinoma in situ and Related Lesions of the Breast : Recent Advances in Pathology Practice
- Invasive micropapillary carcinoma of the breast : Clinicopathological and immunohistochemical study
- In situ Production of Estrogens in Human Breast Carcinoma
- Immunohistochemical expression of gonadotropin releasing hormone receptor in human breast carcinoma
- Risk factors for vitamin D deficiency in patients with Crohn's disease
- Analysis of cell damage in Helicobacter pylori-associated gastritis
- Chemotherapeutic efficacy of ascofuranone in Trypanosoma vivax-infected mice without glycerol
- Molecular cloning and characterization of Trypanosoma vivax alternative oxidase (AOX) gene, a target of the trypanocide ascofuranone
- The efficacy of ascofuranone in a consecutive treatment on Trypanosoma brucei brucei in mice
- Solid cystic tumor of the pancreas : report of six cases and a review of the Japanese literature
- Steroid and xenobiotic receptor in human esophageal squamous cell carcinoma : A potent prognostic factor
- Inflammatory Mediators Down-Regulate 11β-Hydroxysteroid Dehydrogenase Type 2 in a Human Lung Epithelial Cell Line BEAS-2B and the Rat Lung
- Immunohistopathological and molecular genetic features of a case in which gastrointestinal stromal tumor recurred five times
- Nuclear receptor DAX-1 in human common epithelial ovarian carcinoma : An independent prognostic factor of clinical outcome
- Increased expression of 11β-hydroxysteroid dehydrogenase type 2 in the Iungs of patients with acute respiratory distress syndrome
- Expression of 11β-Hydroxysteroid Dehydrogenase Type 1 in Alveolar Epithelial Cells in Rats
- Photoemission Study of Ce_2Sb
- Heavy Fermion Character in Ce_2Sb and Ce_2Bi
- Sulfatide and Its Synthetic Analogues Recognition by Moraxella catarrhalis
- β-Thujaplicin Zinc Chelate Induces Apoptosis in Mouse High Metastatic Melanoma B16BL6 Cells
- Elastic Properties of Single-Crystalline La_Sr_xCuP_4 : II-C Neutron Scattering, NMR and NQR and Ultrasonics : II Oxide Superconductors; Experiments II : Electronic States
- Instabilities at 1/8 Doping in La_Ba_xCuO_4 and Related Compounds : II-A Instability and Substitution Effects : II Oxide Superconductors; Experiments II : Electronic States
- Resonant Photoemission Studies of Thulium Monochalcogenides around the Tm 4d Threshold
- Frequency of Common Bile Duct Motion Artifacts Caused by Inferior Vena Cava Pulsation on Magnetic Resonance Cholangiopancreatography
- A 5-Year Survivor with 2 Previous Surgical Resections of Extrahepatic Metastases for Hepatocellular Carcinoma after Extended Right Hepatectomy
- Photoemission and Bremsstrahlung from Uranium Compounds : Chapter 4. Optical Properties : 4-1. Photoemission and inverse Photoemission Studies of Electronic Structures
- BIS and XPS Study of YbP,YbAs and Yb_4As_3
- Observation of Heavy Hole State in CeSb
- Effect of a tyrosine kinase inhibitor STI571 in a patient with hepatic metastases from a duodenal gastrointestinal stromal tumor
- Fatigue Fracture of Single Particles
- Some Optical Properties of Natural Pyrite Crystals as a Semiconductor
- Semiconducting Properties of Natural Pyrite Crystals